Work Stuff

Change of 16.21 GB to 16.11 GB by deleting 8893 conversations from Trash, most of them short text-only email notifications.

100 MB for 10,000 short text emails, or around 10 kB per email.

So, probably it does not make sense to delete small emails - deleting attachments would clear up much more space.

Monday, October 07, 2019

X windows issues after CUDA install, resolved

Since my machine is supposed to have a GeForce GT 330M according to lspci, I thought I could try out the old version of CUDA SDK - apparently version 6.5 is the last one to support the GT 330M. The deb was supposed to be for Ubuntu 14.04, and I was running Linux Mint 18.1 based on Ubuntu 16.04. The deb and the apt-get install ran without any complaints. But ...

The build of examples worked, but the the cuda compatible nvidia card was not detected. And, after a restart, X did not come up.

Possible culprit was the NVidia driver for the older 14.04 kernel, which probably needed to be removed and so on. After some googling and some trial and error, the following method worked -

sudo apt purge nvidia*

sudo apt-get update

sudo apt-get autoremove

sudo apt-get upgrade

sudo apt-get install --reinstall xserver-xorg-core

sudo apt-get install --reinstall xserver-xorg-video-nouveau

and a reboot.

Sunday, September 22, 2019

WhatsApp notification issue and solution

On my LG Q6 phone, running Android 8, there was a problem of WhatsApp notifications arriving only after I opened WhatsApp. WhatsApp voice call notifications were also not coming through. After some digging, found the setting which made the difference - under Battery -> Power saving exclusions, allowed WhatsApp as an exclusion. Problem seems to be solved.

Sunday, September 15, 2019

ways to increase OpenCV fps

One way to increase the fps of the OCT software might be via multi-threading - using a separate thread to poll the camera as in
https://www.pyimagesearch.com/2015/12/21/increasing-webcam-fps-with-python-and-opencv/

Another way might be the cufft library?
https://www.researchgate.net/post/How_efficient_are_the_parallel_2D_FFT_implementations

Saturday, September 14, 2019

tutorial on 360 to dome with Vuo on Mac

In the second half of this tutorial, Paul talks about warping 360 videos to dome -http://paulbourke.net/dome/vuo/

Edit: Can now use OCVWarp and do this ...

Thursday, September 12, 2019

system program problem

Popup on startup - System Program Problem detected. The solution was to clear /var/crash as per this post.

Saturday, September 07, 2019

increasing font size in Octave legend

Some figures created in Octave had very small font sizes when added to the LaTEX manuscript. Trying to fix the text with Inkscape led to kerning issues similar to this post. So, found these solutions at
https://stackoverflow.com/questions/1532355/increase-font-size-in-octave-legend

Used commands like
print ("j0exp.eps", "-depsc", "-F:20")

Tuesday, September 03, 2019

starting offline processing in a new thread - C++

Tried various options to begin processing in a new thread for BscanFFT, without locking the UI -

Just
std::system(offlinetoolpath);
// - this causes the BscanFFT program to wait for the offline tool to finish

Then,

pid = fork();

if (pid == 0)

{

// child process

std::system(offlinetoolpath);

}

else if (pid > 0)

{

// parent process

}

gives the error

[xcb] Unknown sequence number while processing queue

[xcb] Most likely this is a multi-threaded client and XInitThreads has not been called

[xcb] Aborting, sorry about that.

BscanFFTspinj.bin: ../../src/xcb_io.c:259: poll_for_event: Assertion `!xcb_xlib_threads_sequence_lost' failed.

Apparently, system specific is safer, http://www.cplusplus.com/forum/beginner/13886/

"Actually, the most important disadvantage of system() is that it introduces security vulnerabilities. Using a system-dependent method (that skips the shell) is always safer.

In Windows, it is CreateProcess(), which is really straight-forward to use.

In POSIX (Linux, etc) it is a combination of fork() and one of the exec() functions.

http://linux.die.net/man/2/fork

http://linux.die.net/man/2/execve

http://linux.die.net/man/3/execv

These are also easy to use, but there are some caveats. Follow the example codes."

execve with the example code gave
(show:9323): Gtk-WARNING **: 10:47:16.601: cannot open display:

https://stackoverflow.com/questions/2437819/gtk-warning-cannot-open-display-when-using-execve-to-launch-a-gtk-progra/2437850#2437850

suggested using execv instead. This worked.

external hard disk prices

From amazon.in, current external USB hard disk prices which I collected for N -

1 TB = Rs. 3500 - per TB cost 3500

2 TB = Rs. 5100 - per TB cost 2550

3 TB = Rs. 6200 - per TB cost 2067

4 TB = Rs. 8100 - per TB cost 2025

The 3TB drives seem to be attractively priced due to the sharp drop in per TB price as compared to 2TB drives.

Monday, September 02, 2019

gimp 16-bit caution

Gimp 2.8 opens 16-bit png files, but saves as 8-bit tif or png. Octave 4.2.2 on the other hand, does write 16-bit png with imwrite. Octave's behaviour depends on shared libraries, too, of course.

On Linux,
file filename.png
gives information about the file, like bit-depth and so on.

Sunday, August 25, 2019

smorgasbord of programming tips and ideas - OpenCV etc

Here is a collection of links for various implementations of OpenCV-based medical imaging software -

CUDA and OpenCV - just need to compile OpenCV on a machine with a Cuda compatible graphics card. My old machines have cards which are only supported by older versions of the CUDA SDK. Can expect a 180% speedup as per some papers.
https://answers.opencv.org/question/62955/cudadft-speed-issues-too-slow/
indicates that the Matlab times were wrong.

https://opencv.org/cuda/
https://developer.nvidia.com/cuda-gpus and legacy gpus at
https://developer.nvidia.com/cuda-legacy-gpus
https://developer.nvidia.com/cuda-toolkit-archive and supported GPUs at
https://en.wikipedia.org/wiki/CUDA#GPUs_supported
A nice class to capture from Spinnaker SDK to OpenCV Mat, running in a separate thread - https://github.molgen.mpg.de/MPIBR/SpinnakerCapture
Writing an OpenCV Mat file to a binary format on disk - Lots of options mentioned at
https://answers.opencv.org/question/6414/cvmat-serialization-to-binary-file/
I had a thought of trying DICOM writing. But it turned out to be quite complicated to write DICOM, since so many parameters need to be initialized.
https://stackoverflow.com/questions/36379637/read-dicom-in-c-and-convert-to-opencv
https://github.com/marcinwol/dcmtk-basic-example
https://itk.org/ITKSoftwareGuide/html/Book2/ITKSoftwareGuide-Book2ch1.html#x7-240001.12
https://www.researchgate.net/post/ITK_vs_OpenCV
Some tips on exporting from Octave to OBJ and STL formats - commonly used in 3D printers - https://alexbjorkholm.wordpress.com/2016/10/07/exporting-3d-objects-from-octave/
Plotting using slice in Matlab -
https://stackoverflow.com/questions/35549733/how-can-i-plot-several-2d-image-in-a-stack-style-in-matlab

Ubuntu 18.04 screen issue for File Open dialog boxes, scrollbars [fixed]

After a new install of Ubuntu 18.04, had a funny problem where Geany File Open would lead to the application being greyed out, as if the dialog box had opened, but no dialog box being visible on screen. Googling found the answer in this thread, https://ubuntuforums.org/showthread.php?t=2395250

Apparently, 18.04 configures 2 screens even when there is only one screen. Fix was to go to Settings and change to one screen.

Still there is a problem with Geany's scrollbars - the scrollbars don't redraw after scrolling, leading to the whole scrollbar becoming an orange colour instead of just the orange scrollbar handle. My initial installation was a minimal Ubuntu desktop. Later, installing unity did not help.

Edit: This post seems to have the solution - installing a newer version of Geany from the ppa solved the scrollbar issue.
sudo add-apt-repository ppa:geany-dev/ppa
sudo apt-get update
sudo apt-get install geany geany-plugins-common

Friday, August 23, 2019

Visual Studio specifics of OpenCV project with Spinnaker SDK

This is linked to my previous post about the QHY -> Spinnaker implementation, the nitty-gritties of Visual Studio project changes required under Windows.

The SDK and examples installed by default under Program Files in C:. If Visual Studio opens the examples there, it complains that the directory is not writable. So, make a copy, including the entire spinnaker directory - not just the src folder, since the include paths in the examples are set as ..\..\include and similarly for libs.
In my case, since I had VS2017, I had to install the VS2015 toolset as mentioned in my previous post, and when opening the solution, choose the "No Upgrade" option for these projects.
Once these steps were done, I could compile and run the examples. But for my project, I had to create a new project, choose the V140 toolset, add libraries, add include and lib paths, and also prevent errors due to my use of sprintf.
One way would have been to make a copy of the common properties file which I had made earlier, make modifications to it, and add that to the project. In this case, I just made specific changes to the Release configuration of this particular project.
Additional include dir in C/C++ -> General, Additional Include Directories would be a better place to add it than in this screenshot.
Linker -> Input -> Additional Dependencies
Additional Library Directories.

I would probably need to copy the dlls manually, or follow the post build steps mentioned at this earlier post.

implementing opencv project with Spinnaker SDK for Point Grey FLIR cameras

This post documents my learning curve with migrating code written for the SDK for QHY cameras to the Spinnaker SDK for Point Grey FLIR cameras.

On both Windows and Linux, I had to make changes to my build platform. On Linux, Ubuntu 18.04 was a supported platform, so I installed 18.04 onto a spare partition. On Windows, I was using Visual Studio 2017, and had to install the VS2015 toolset.
On Linux, even though the spinnaker examples had large and complex makefiles, the sdk had put the include and lib files in the default locations, so I just had to modify my CMakeLists.txt file minimally -
On Windows, there was a much more elaborate series of steps, which I will put in a separate post.
The simpler parts of implementation, like changing exposure time, gain etc could be done in a fairly straight-forward way. Unfortunately, there was no example for continuous capture with live display. ptgrey.com being redirected to flir.com, the examples obtained on googling couldn't be directly found. Finally, found this, which indicated that StreamBuffer handling had to be changed. Looking for this specific information, found the documentation at this page, which mentions its potential use in live view scenarios. Putting that in place, then Begin Acquisition and End Acquisition could be implemented outside the capture loop, and the frame rate improved.

Edit: Here is a dump of the nodes I changed, full code is at https://github.com/hn-88/FDOCT/blob/master/BscanFFTspin.cpp (spinnaker documentation talks about the details of the nodes, and the example code helps).

(Gain is in dB)

In terms of nodes,
AcquisitionControl -> AcquisitionMode -> Continuous
AcquisitionControl -> ExposureAuto -> Off
AcquisitionControl -> ExposureTime -> 1000
AnalogControl -> GainAuto -> Off
AnalogControl -> Gain -> 0.0
AnalogControl -> Gamma -> 1.0
ImageFormatControl -> Width -> 1280
ImageFormatControl -> Height -> 960
ImageFormatControl -> OffsetX -> 0
ImageFormatControl -> OffsetY -> 0
ImageFormatControl -> PixelFormat -> Mono8
ImageFormatControl -> PixelFormat -> Mono16
ImageFormatControl -> AdcBitDepth -> Bit12
ImageFormatControl -> AdcBitDepth -> Bit10
BufferHandlingControl -> StreamBufferHandlingMode -> NewestOnly

Using Displayspin, on my machine, I got
71 fps for Bit12 Mono8
34 fps for Bit12 Mono16 (converted to Mono8 to display on screen)
71 fps for Bit10 Mono8

So, probably we can always use Bit12, since it does not seem to have much of a speed penalty.

And a small note on a mistake I made - initially I got the error
Spinnaker: Can't clear a camera because something still holds a reference to the camera [-1004].
Putting pCam = nullptr; before camList.Clear(); removes this error.

Wednesday, August 21, 2019

IP address, MTU setting on Linux for FLIR Point Grey GigE cameras

It looks like my hardware does not support jumbo frames - https://linuxconfig.org/how-to-enable-jumbo-frames-in-linux

Even after setting up a larger MTU with ifconfig,
https://www.flir.com/support-center/iis/machine-vision/knowledge-base/lost-ethernet-data-packets-on-linux-systems/
the MTU reverted back to 1500. So, probably hardware or driver limited.

Also, Network Manager then complains that the interface is not managed,
https://askubuntu.com/questions/71159/network-manager-says-device-not-managed

But the camera works as long as the IP address is set correctly. According to the knowledge base article at
https://www.flir.in/support-center/iis/machine-vision/knowledge-base/setting-an-ip-address-for-a-gige-camera-to-be-recognized-in-linux/

setting it anywhere in the 169.254.x.y range with a 255.255.0.0 netmask should do the trick - link local address (LLA).

More info about our camera is at
https://www.flir.com/products/blackfly-s-gige/?model=BFS-PGE-16S2M-CS

https://www.flir.com/support-center/iis/machine-vision/knowledge-base/technical-documentation-bfs-gige/

Getting Started Manual which talks about Windows installation
Technical Reference which gives frame rates, pin-outs etc

Edit - found this page which has a good explanation of the bandwidth used, effect of lower MTU (slightly higher CPU usage), multiple GigE cameras and so on.

Sunday, August 18, 2019

Remmina, RDP and sound

For convenience, I was trying out using Sound Forge and other audio editing software on my laptop, after logging in with a Remote Desktop Connection using Remmina as the client. With the default setting, Sound Forge etc would complain that there is no suitable audio output device. Googling, found that RDP has various options - taking sound to remote client, leaving the sound on local machine, or no sound at all. Remmina default was no sound. Tried bringing sound to local device, but that did not work for DirectSound, since I'm on Linux Mint. Changing it to leave at local, SF etc would work properly.

tried ubuntu install from mint

https://help.ubuntu.com/lts/installation-guide/i386/apds04.html

but apt update after chroot seemed to be taking the values from sylvia.

So, simpler to just use a bootable usb to create and install the new ubuntu partition.

Wednesday, August 14, 2019

moving mailing list to google groups

The process begun in Dec 2017 was completed now, in mid-Aug. Transitioning our mailing list with 60k subscribers to google groups. Had to move slowly due to the limits set on directly adding users, 100 per day per group, and only in batches of 10 email ids per addition.

Had asked PB to unconfirm users who have been moved to groups instead of unsubscribe, because unsubscribe will send them a mail saying they have been unsubscribed.

Points to note:
(a) any user you add will get an email
(b) for a strictly mailing list only functionality, remove posting permissions for everyone except owner and manager, under Permissions -> Posting Permissions, like
Inline image 1

Google groups does handle bounces, and it is advisable to remove ids which bounce -
https://productforums.google.com/forum/#!msg/apps/5PCc-uDVowo/S4A4YPnnzXcJ

(Automating signup though google docs or google forms or something would be great. An example is given here,
https://sites.google.com/site/sandorexampleclub/how-to/step-11
PS wrote his own implementation which is on script.google.com as a GSuite script, I think.)

Tuesday, August 13, 2019

easy 3D volumetric rendering with imagej

ImageJ, or its full-featured version Fiji, makes it easy to create volumetric renderings and flythroughs using the 3D Viewer plugin. Plugins are installed by just copying the jar file into the plugins folder, found using locate on my system at ~/.imagej/plugins. Multi-layer tifs or gifs can be used as input. Gimp cannot create multilayer tifs, but it can create gif animations, which are sufficient. Open as layers in Gimp to select multiple layer files, save as animated gif, open in ImageJ.

Inside ImageJ, Image -> Scale allows setting of proper scale. Making one axis longer etc. The Image menu also has Crop, Duplicate, Transform and Zoom. Image -> Adjust has Threshold, Brightness/Contrast, etc. Then, Plugins -> 3D Viewer.

The 3D Viewer plugin has nice recording features, with a built-in 'Record 360 degree rotation' under its View menu. It opens another Movie window, which can then be exported using ImageJ's File -> Save as and choosing Gif.

ezgif.com helps to crop and compress gifs easily.

Monday, August 12, 2019

creating animated gif or video from Octave

My Octave install does not have the campos function, but the latest version seems to have it. So, this could be useful in the future.

This post has some good guidelines - using
set(0, 'defaultfigurevisible', 'off');
to speed up things, and using print to save as png. Then using mencoder etc to create the movie.
mencoder mf://output/*.png -mf w=640:h=480:fps=25:type=png -ovc lavc -lavcopts vcodec=mpeg4:mbd=2:trell -oac copy -o output.avi

Sunday, August 11, 2019

bulk renaming from commandline on linux

Using the rename tool,

https://www.tecmint.com/rename-multiple-files-in-linux/

An example is

rename 's/\.html$/\.php/' *.html

From

https://www.gossland.com/perlcourse/matching/substitution

we see that a normal string substitution would be like

s/dog/cat/

rename -n 's/SV_2019_08_10_PM_SOME_LONG_NAME/SV_2019_08_10_SHORTNAME/' SV*mp3

shows what it will do, and -v will actually do it and also display the result.

Tuesday, July 16, 2019

using DMCTK with CMake on Linux

This stackoverflow post mentions an old version of CMake and making on Windows. More googling led to FindDCMTK on cmake.org so that I could just edit my CMakelists.txt to read

...snip...

find_package(USB-1 REQUIRED)
find_package(OpenCV REQUIRED)
find_package(DCMTK REQUIRED)

include_directories($(USB_1_INCLUDE_DIR))
include_directories($(OpenCV_INCLUDE_DIR))
include_directories($(DCMTK_INCLUDE_DIRS))
... snip ...

target_link_libraries(${FILENAME1} ${LIBUSB_1_LIBRARIES} ${OpenCV_LIBS} ${DCMTK_LIBRARIES} )

... snip ...

That worked nicely, without having to manually find the libraries and so on.

Tuesday, July 02, 2019

mounting a windows smb share and automating file moves

mounted //PATH/FOLDER on a linux machine onto a folder /path/to/mountdir using

sudo mount -t cifs //192.168.ip.address/FOLDER path/to/mountdir -o uid=usernameofowner,username=username,password=xxxxx

A cron job was added to automatically move files every 5 minutes, like
*/5 * * * * mv /path/to/mountdir/LIVE_* /path/to/another/dir/

But that caused problems, generating hundreds of emails to usernameofowner, saying mv: cannot stat ‘/path/to/mountdir/LIVE_*’: No such file or directory whenever there was no file there to move. So, PB modified the cron by adding
> /dev/null 2>&1
which seems to have solved the issue, working well.

Wednesday, June 12, 2019

income tax filing quirks for assessment year 2019-20

This year, I thought of filing ITR1, since I only had short-term capital losses and no gains. But on downloading the pre-filled XML and trying to pre-fill the java utility, it gave an error that the xml is not valid. Then tried ITR2 java utility, with ITR2 prefilled XML. This time it mentioned that the assessment year is wrong. Manually edited 2018 to 2019 in the XML, and it pre-filled successfully.

ITR2 needed Basic Salary and DA. So, I computed it from my salary slips, as a percentage of gross salary.

Unfortunately, the CG (Capital Gains) section was not working properly in the java utility (AY2019-20 version 1.2). The Mutual Fund section's form was not being displayed, only the instructions were being displayed. So, I did not put in my losses to carry forward to the next year.

The tax computation is in the tab Part B TTI. When you click on Save, it does validation. This time, there was also a Submit button, which allows you to directly submit the return from the java utility itself. I did that, and the ITR-V was sent to my email. I chose to e-verify via HDFC bank's netbanking like in this earlier post. The first time I tried, I was logged on to the incometax portal when I started the process, so it did not work. I needed to log out of the incometax portal, and then click on the Income tax e-filing link under Requests in HDFC bank's netbanking. Then it worked.

Wednesday, May 29, 2019

ffmpeg commandline for maximum compatibility

An old Raspberry Pi was not playing some videos. Looked around for a transcoding option with ffmpeg, baseline x264 seemed fine, and this example worked for me -

ffmpeg -i input.avi -c:v libx264 -preset slow -crf 22 -c:a copy -profile:v baseline -level 3.0 output.mp4

by looking at

https://trac.ffmpeg.org/wiki/Encode/H.264

Another post has the 2-pass encoding example, where the bitrate is also specified.

Tuesday, May 21, 2019

videos for waiting area - redux

The original idea of having a marquee which would update as in my previous post turned out to be not very workable. Even if the wifi was not flaky, updating the times etc on a computer in the office would be "too much work" for us in the middle of shows. And the wifi signal was being completely lost due to electrical noise from our solar system exhibit's motor and my room's AC compressor motor. So, the idea was adapted to showing a notice in 3 languages, that the average wait time is 30 minutes, every five minutes or so.

Notice made in Google docs and screenshotted, added an "invert" filter scrolling up-down for visibility.

The next change was to use the "smart TV" media playback for the two flat screens instead of buying Raspberry Pis for them. Since anyway the content was going to be static, did not make sense to buy. Idea suggested by S.

The "smart" TVs would only play a single video file, would need intervention after a single video file was played, would not play playlists. So, strung together all the files into a single file, repeated it for 3 hours so that no intervention would be needed. I had used avidemux, vdub, ffmpeg for doing this, but S more comfortable with VSDC on Windows.

Ffmpeg commandline for making files of known size - first calculate required bitrate by size / duration, using kbits and seconds, then something like

for half an hour 500 MB, = 500 * 1000 * 8 kbits

bitrate = file size / duration

=4000000/1800 = 2222 kbps. Let's take as 2200 kbps.

so, 2200k

ffmpeg -y -i input -c:v libx264 -preset medium -b:v 2200k -pass 1 -c:a libmp3lame -b:a 128k -f mp4 /dev/null && \

ffmpeg -i input -c:v libx264 -preset medium -b:v 2200k -pass 2 -c:a libmp3lame -b:a 128k output.mp4

In the ffmpeg example obtained by googling, it was AAC audio. But on my machine,
Unknown encoder 'libfdk_aac'
So, used libmp3lame instead.

Playing the single file on the Pis had some issues. The older Pi would not play, since it did not support the codec - x264 High Profile, I think. The other Pi had vignetting issues, the 16x9 videos were appearing too small on the 4x3 TVs. So, the Pis play playlists, and the "smart" TVs play single video files. The older Pi does not play VP8. Files downloaded from Youtube via desktop (MPEG4 codec) were fine, downloaded via mobile by S were VP8.

Also learned that the Raspberry Pi overscan controls do not work with VLC in fullscreen mode (on RPi3).

Also learned that the Raspberry Pi (2 and 3) video out pinout of the TRRS connector did not have Sleeve as ground! TRRS = L, R, GND, Video! Had to modify the TRRS to RCA cable we bought, inverting GND and VID for one of the RCAs.

For getting composite video out, 0 is NTSC and 2 is PAL,
https://www.raspberrypi.org/documentation/configuration/config-txt/video.md

if only sdtv_out=2 does not work,

https://bhavyanshu.me/tutorials/force-raspberry-pi-output-to-composite-video-instead-of-hdmi/03/03/2014/

And with the remote for shutting down the Pis, they can be operated completely independent of wifi availability.

Sunday, May 12, 2019

Veracrypt fix

A Veracrypt volume on a removable (NTFS) hard disk was not mounting. Veracrypt was complaining of bad password or bad volume. I thought the password was correct. Finally, did

sudo fdisk -l

to find the device name, which was /dev/sdc1 for the removable drive in this case, and then

sudo ntfsfix /dev/sdc1

It finished in less than a second, noting that it had successfully completed. Then, tried mounting with Veracrypt, success!

After mounting, the encrypted volume was visible in Nemo with an icon to unmount it. But unmounting it with Nemo does not really unmount it, probably because Veracrypt uses su privileges to mount - you have to unmount (or Dismount) it via the Veracrypt interface. Only then would the removable drive become free of processes and unmountable via Nemo.

Thursday, May 02, 2019

Octave memory issues and workaround

I had an Octave script which was reading data from files into a variable, doing some processing, then reading some different data into the same variable, and so on. For many hundreds of MB of data, using the load function. But Octave was running out of memory, and finally I had to
killall -9 octave-gui

The workaround was to process part of the data, save the intermediate data to file, exit Octave, reload Octave, resume processing, and so on. Painful, but it worked.

Wednesday, April 24, 2019

chapterwise references with LaTEX and biblatex

I needed chapterwise references for my thesis. The suggestions at
https://tex.stackexchange.com/questions/345163/references-at-the-end-of-each-chapter
did not work with the "Cambridge" template on Overleaf.

Could try
https://stackoverflow.com/questions/2765209/latex-bibliography-per-chapter

or use TU Delft template which has per chapter references.

https://latex.org/forum/viewtopic.php?t=26123

suggested latextemplates.com

used that, and found:

The chapterbib package and biblatex are incompatible

Then got this -

https://tex.stackexchange.com/questions/87414/per-chapter-bibliographies-in-biblatex

That seemed to work - \begin refsection etc

% Chapter 1

\begin{refsection}

\chapter{Introduction} % Main chapter title

---snip----

% and at the end, where we want the references

\renewcommand{\bibname}{References}

% 20190501 - HN

% added this renewcommand to change the title Bibliography to References

\printbibliography

\end{refsection}

Tuesday, April 16, 2019

mailstore for achiving emails

Here is part of an email to a colleague regarding Google Apps email reaching storage limits:

Regarding email - currently, our domain does not allow expansion of the existing amount of space. So, the only way is to delete large attachments. In many cases, the attachments are required and cannot be deleted. This can be handled in many ways.

1. Forward them themewise to specially created gmail ids and then delete
2. archive them locally by storing on a local hard disk and then delete
3. automate the local archiving using some tool like
https://www.google.com/search?q=imap+archive+tool+open+source

I guess you would want to work on Windows? I have not tried any of these tools, but this free Windows tool comes near the top in search results -
https://www.mailstore.com/en/products/mailstore-home/

And later, when he tried out mailstore, found that it had a specific option to get authorized for GMail - using that option, downloading emails was quite painless, though a long process for many GB of emails.

Thursday, April 11, 2019

voting in India

Today is polling day for us. Both State and National elections being held simultaneously here. Though the printed slips with our electoral roll serial number and polling booth location were given to us from our workplace, it is also available for all as an app,
https://play.google.com/store/apps/details?id=com.eci.citizen&hl=en_IN

Lots of information is available online as well as on the app, for example, the eligibility criteria and how to register,
https://eci.gov.in/faqs/

My experience was relatively seamless. Waited for around 20 minutes in line - around 20 people in line in front of me, including elderly ladies who had to be prompted on how to use the machine etc. All done in a harmonious manner. Very civilized. A demo video is at
https://eci.gov.in/video-gallery/evm-awareness/know-your-evm-r61/

Friday, April 05, 2019

Raspberry Pi shutdown using IR remote

Initially followed this instructable -

https://www.instructables.com/id/Reuse-Unwanted-Remote-Control-to-Control-Raspberry/

Had to make changes because of new version of Raspbian and lirc.

1. Added sensor as per this,

https://www.instructables.com/id/Add-Infrared-Interface-to-Your-Raspberry-Pi/

changing pinout as required by googling

2. Installation by

sudo apt-get update
sudo apt-get install lirc

3. Configuring kernel module was different from

https://www.instructables.com/id/Add-Infrared-Interface-to-Your-Raspberry-Pi/

The only thing we need to do is to uncomment out

dtoverlay=lirc-rpi

in /boot/config.txt

4. Configuration was slightly different from

https://www.instructables.com/id/Install-and-Configure-Linux-Infrared-Remote-Contro/

(a) create /etc/lirc/hardware.conf and put in it

LOAD_MODULES=true
DRIVER="devinput"
DEVICE="/dev/lirc0"

(b) Placing the remote's configuration file was inside the directory /etc/lirc/lircd.conf.d

5. irexec configuration was different from

https://www.instructables.com/id/Reuse-Unwanted-Remote-Control-to-Control-Raspberry/

We needed to edit /etc/lirc/irexec.lircrc instead, since we want to shutdown and reboot, editing it to:

begin
    prog   = irexec
    button = KEY_1
    config = sudo shutdown -r now
end
begin
    prog   = irexec
    button = KEY_0
    config = sudo shutdown -h now
end

6. irrecord was a little tricky -

https://www.instructables.com/id/Record-Infrared-Codes-of-Any-Remote-Control-Unit-f/

(Here also, instead of service lircd stop, we need to do /etc/init.d/lircd stop)

irrecord first wants you to press random keys. Then, you have to give the name of a key, press and hold it, then enter the next key's name when prompted, and so on for all the keys, and then only press ENTER to stop the process. And some keys are not recognized - maybe those should have been pressed during the first phase of random pressing.

7. sudo /etc/init.d/lircd status reports error with duplicate remotes. We need to rename /etc/lircd/lircd.conf.d/devinput.lircd.conf to devinput.lircd.conf.dist

sudo mv devinput.lircd.conf devinput.lircd.conf.dist

8. sudo /etc/init.d/lircd status reports errors like

lircd-0.9.4c[364]: Error: Cannot glob /sys/class/rc/rc0/input[0-9]*/event[0-9]*

Then we need to edit /etc/lirc/lirc_options.conf, changing

device = devinput

device = default

9. sudo /etc/init.d/lircd status reports errors like

Error: could not get file information for /dev/lirc0

After a lot of searching, found on this page that this could be because the driver lirc-rpi has been replaced with a newer version called gpio-ir, so that the /boot/config.txt line has to be changed from

dtoverlay=lirc-rpi

dtoverlay=gpio-ir

Did that, and it worked.

This is on Raspberry Pi 2 running Raspbian 9 (Stretch) with kernel 4.19.23+, running lirc version 0.9.4c-9 while the other Pi, which worked with dtoverlay=lirc-rpi was running Raspbian 9 (Stretch) with kernel 4.14.98-v7+ and the same lirc version 0.9.4c-9.

testing AppImages on various distros - dd iso to USB

As mentioned in my previous post, I had created an AppImage for distribution a Linux binary. Testing on 3 distros one generation earlier is recommended using chroot. For example,
https://www.pcsuggest.com/setup-a-32-bit-chroot-with-ubuntu-live-cd/

But I found the procedure for creating chroots to be more cumbersome than just dumping the Live distro iso into a USB pen drive, booting another machine from USB, and checking the AppImage on the distro.

1. Since I was on an Ubuntu-based Mint Linux 18.1, it had a "Startup Disk Creator" GUI app for dumping Ubuntu-like Live CD/DVD to USB devices.

2. For Fedora and OpenSuse, I used the following commandline, taking care to note the correct device id like /dev/sdc1 or /dev/sdd1 or whatever using mount,
sudo umount /dev/sdd*
sudo dd if=Fedora-Workstation-Live-x86_64-24-1.2.iso of=/dev/sdd bs=8M status=progress oflag=direct

3. This commandline pattern worked fine for Fedora and OpenSuse, since these isos were meant to work as Live CD/DVDs. So, I did not need to use unetbootin or anything like that for these. Approximately 3 MB per second to my USB drives, which were not very fast. 7-8 minutes to write 1.5 GB.

creating an AppImage to distribute Linux binaries

Some notes of my AppImage creation process.

First tried creating manually, using
https://github.com/AppImage/docs.appimage.org/blob/master/source/packaging-guide/manual.rst and the AppRunx86-64 from https://github.com/AppImage/AppImageKit/releases
Found and copied the libs it uses by doing the following to copy all shared libraries -https://www.commandlinefu.com/commands/view/10238/copy-all-shared-libraries-for-a-binary-to-directory
ldd file | grep "=> /" | awk '{print $3}' | xargs -I '{}' cp -v '{}' /destination
Need to use the environment variable $OWD (Original Working Directory) to get files from the OWD, like our ini file. This code snippet was a good template, https://stackoverflow.com/questions/40306012/c-using-environment-variables-for-paths
char* pPath;
pPath = getenv("PATH");
if (pPath)
std::cout << "Path =" << pPath << std::endl;
return 0;
Many libs copied with the manual method had to be excluded using the excludelist at
https://github.com/AppImage/pkg2appimage/blob/master/excludelist
Still did not work on newer distros. In this thread, probono recommended using trusty on TravisCI for building, and linuxdeployqt instead of manual creation of AppDir. Did that, and it worked. Far fewer libs are bundled by linuxdeployqt. Lists of the two bundles are available at this issue thread.
The download link from transfer.sh can be seen if the entire log is downloaded from TravisCI.
The travis yml file gives the outline of the build and bundling process.

Thursday, April 04, 2019

USB drive reported as read only - solution

Found my USB drive reported as read-only on Linux Mint 18.1.

Corruption could cause this, so tried
sudo dosfsck -a /dev/sdc1

That did not help. Though the CLI is able to write to it, Nemo still complains it is read-only.

Apaprently the fix is at https://forums.linuxmint.com/viewtopic.php?t=176546

So everything needed to fix the issue is to execute:
sudo chmod 777 /media/USERNAME

And/or maybe a reboot?

When I faced this issue today, I rebooted the system, and then the USB drive was mounted read/write.

Wednesday, April 03, 2019

transparent proxy over ssh - sshuttle

Sometimes the network to which I am connected fails, while the LAN over fiber to Studio is active, and Studio's backup network is functional. Then, an elegant way to use the Studio network, without having to install any proxy server software, is using sshuttle.

sshuttle --dns -r username@ip.address.of.machine 0.0.0.0/0

will transparently proxy all dns requests as well as all traffic through the remote machine. Only python needs to be installed on the remote machine.

Wednesday, March 27, 2019

reducing pdf size from the commandline

A very useful trick, from
https://unix.stackexchange.com/questions/274428/how-do-i-reduce-the-size-of-a-pdf-file-that-contains-images

using gs,

gs -sDEVICE=pdfwrite -dPDFSETTINGS=/ebook -q -o output.pdf file.pdf

Tuesday, March 19, 2019

Fedex (India) - expectation vs reality

Documenting my experience with Fedex. Plenty of lessons here for everyone, I think. My takeaway was, avoid Fedex (at least in India) whenever possible, if you are an individual, and not a corporate with a Fedex account. Perhaps they treat corporates better - who knows. But the level of miscommunication and lack of communication would indicate otherwise. Even our University had requested us a couple of years ago to avoid Fedex when importing.

1. I get a phone call on Saturday, 23 Feb 2019, that my shipment is due to arrive the next day, and I need to submit the required documents. Since I had already submitted my "one time only" Know Your Customer (KYC) documents last year, I thought this would be a breeze. I was wrong.

2. The form I had to fill in this year was different from last year's. (My printer was on the blink, so I had to trek all the way to another office, 15 minutes away, in order to print all the new documentation that had been requested.) The documents requested would probably change again, so it may not be worthwhile documenting them, but just for completeness:

· KYC Form along with supporting documents – DULY SELF ATTESTED {signed & stamped} (KYC is mandatory and is a 1 time requirement)

· PAN copy,

· Aadhar Card & Voter ID card

· Address proof. (Telephone /Electricity Bill/Bank Statement/ Rental Agreement )

· AD code ( Authorized dealer code from Bank)

· DUMMY IEC LETTER

· Gatt and DGFT declaration ( Attached )

· Technical write up & INDIVIDUAL NET WEIGHT FOR ALL ITEM to prepare Advance checklist

3. At first, the Fedex rep on the phone told me that "since the item has come in cargo mode" it was mandatory that I have an IEC code - which is an Import-Export code for importers. She told me to find out from my organisation if I can import under their IEC, saying that individuals cannot import. Though I tried telling her that I had imported items in the past, she said it was impossible. Luckily, as it turns out, there was a delay in getting hold of the head of operations at our institution. In the meantime, Fedex called me again, saying that it would be possible, using something known as a dummy IEC, the request for which was listed in the above list.

4. Then there was Sunday - a day of rest - and no communications from Fedex.

5. On Monday, there were a flurry of 17 emails. Fedex did not accept my Voter ID as address proof. Only one of the items listed above. And AD code - I thought that since I am not an authorized dealer, I need not submit. But I was wrong. Apparently this is the AD code of the forex section of the bank. Even the bank manager did not know this, and this led to another day of delays.
Expectation - if someone from Fedex had explained this to me, I would have done it immediately.
Reality - I got the same "form" email from Fedex which I received earlier, so I just wrote back saying that I have already submitted the documents. So, this led to a one-day delay in filing the Bill of Entry (BoE) and thus a Rs. 5000 fine. Which has to be paid by me, of course. And even after receiving the AD code, there was some confusion - I got an email saying that the AD code is not valid. I again contacted the bank. The bank said it was valid. Then Fedex confirmed that the AD code was valid, it was the wait for permission to use dummy IEC which was causing the delay.

6. On Tuesday, I got an email with approval list for BoE filing, from jeena.co.in, Fedex India's clearing agents. I filled it up and returned it within 15 minutes. Then came the long wait, 26 Feb to 1 Mar. No intimation from Fedex or Jeena as to what is happening. I tried calling all the numbers available. No one picks up. Calling the toll-free numbers gets me an agent who speaks very soothingly, saying that Mr. (name) is in charge of clearing this package, they will inform him to get in touch with me. But Mr. (name) does not contact me. At all. Ever.
Expectation - if someone from Fedex or Jeena had explained that it would take a week or two for customs to clear it, I would have waited patiently. At the very least, someone should pick up the phone.
Reality - Either the staff are so over-worked and harassed by customers that they cannot bear to pick up calls, or they just stopped caring long ago.

7. On 1st March, I was asked to submit any or all of the following, for value evidence:
1) Internet price
2) Supplier price list
3) Previous BOE,which cleared earlier with same Item
4) If payment is made Bank remittance.

I did so.

8. Again a looong silence. On Mar 7, late in the evening, I get an email, asking for technical writeup. Technical writeup had been submitted in the first batch of documents. Anyway, I again edit that writeup, add a couple of lines, and submit along with all the SLED documentation in the supplier's website.

9. Silence again, till 13 Mar. Now, I am asked to pay the customs duty directly using the ICEGATE website, and to provide "E-way bill". Since I am an individual and not a company, I was not sure if I could do these things. Called up the toll-free. They said they will ask their people to call me and guide me. They never called. I googled, found the ICEGATE website, paid using the details like Challan number supplied by Jeena. But according to various internet sources, individuals need not file E-way bill unless they are transporting high-value goods in their own vehicle. Again write to Fedex, no reply. Again call toll-free. Again they tell me that they will ask their rep to contact me. They do not do so.
Expectation - when the customer asks for help, someone tries to help.
Reality - The toll-free operators either are not allowed to, or not able to, help. The customs clearance people are either overworked or not bothered.

10. 14 Mar - called up Jeena - the executive picked up! That itself was half the battle won. I mentioned that I'm an individual, not a company. Immediately he said, in that case, just send me a letter saying so, no E-way bill required. So, again I sent an email saying just that. And that evening, I get the automated Fedex tracking email, shipment released for delivery.

11. I thought I had paid all that was necessary, but wanted to make sure. Called Fedex toll-free to check. On 15th morning, they said please call back by 15th evening, because some documents may take time to be uploaded into their system. On 15th evening, I call, they say nothing to be paid. On 16th morning, I get a call from Fedex delivery agent, saying I need to pay Rs. 7000 for delivery. Again I call the toll-free number. They tell me that though it is not yet mentioned on their system, it is possible that the clearance charges are what I am expected to pay.
Expectation - clear intimation of what is to be paid, with an emailed invoice in advance.
Reality - confused signals. Nobody knows anything.

12. Part of the problem is the expectation. With services like India Post, you know that there is no one to call to ask for updates, you expect delays, you don't expect any email updates. But then Fedex is more than twice as expensive, so maybe the expectations are warranted. Especially when they put up pages like
http://www.fedex.com/in/why-ship-with-fedex/money-back-guarantee.html
and then completely renege on the delivery date. Like what happened last night - item still not delivered, so delivery status was shifted from "by 8.00 pm" to "pending".

Edit: The item was finally delivered on 20th March, after being shipped on 22 Feb. Even if you discount all the customs clearance delays, it took 8 days. With "Fedex International Priority" shipping. Now compare this with another similar package, sent via Royal Mail and India Post, which took a total of 10 days to reach me from Aberdeen, Scotland.

Monday, March 18, 2019

different kinds of hash verifications, and writing boot disk iso to USB

Fedora - the hash is in a file called NameofISO-CHECKSUM:

sha256sum -c *CHECKSUM

OpenSuse is similar - the hash is in a file called NameofISO.iso.sha256:

Ubuntu - has sha sums as well as md5sums, so can use

md5sum -c MD5SUMS

also.

Then, writing - for Ubuntu based distros, can use the "make startup disk" tool. If the iso is from a different distro, and it is known to be compatible with usb boot, then something like (after verifying the device name - sdd or whatever - very important!)

sudo umount /dev/sdd*

sudo dd if=Fedora-Workstation-Live-x86_64-24-1.2.iso of=/dev/sdd bs=8M status=progress oflag=direct

The above method is known to work for Fedora 24 to 29, and OpenSuse 13.2.

If it is a DVD iso and not meant for USB boot, maybe unetbootin is required.

Friday, March 15, 2019

burning in subtitles with VLC

From https://www.youtube.com/watch?v=G0NzMlhnzQQ -

Burning in subtitles with VLC needs a bit of tweaking -

1. Media -> Stream, choose the video file. Don't enable the subtitle checkbox on that screen. Click the Stream button.
2. In the Stream Media Wizard, choose the destination as File. Click Add and choose a filename for the destination.
3. In the next Wizard screen, make sure activate transcoding is checked. Click on the settings button, in the subtitles tab, make sure the 'enable subtitles', and 'overlay subtitles on the video' are checked. Codec can remain T.140.
4. In the next screen, in the Generated Stream Output String, we need to edit out (delete) the part of the string which says scodec=t140,
5. Click stream to transcode.

Saturday, March 02, 2019

F&D smart TV - removing the ads from home screen

We wanted the F&D smart TVs in our lobby to start up with "last selected input" instead of the Home screen with all the youtube "recommendations" or ads. I tried out
Setting -> Common -> System Recovery

(To be updated.)

For Sony TVs, https://www.sony.com/electronics/support/articles/00257833 - Quick settings - Power on behaviour - Last input

There are many posts about using third-party home screen apps etc, but I'd rather use "Last input". Will check on this later.

Monday, February 25, 2019

downloading subtitles from youtube videos

Hit the three dots below the Youtube video, choose 'Download transcript'. Or, use this tool, https://sourceforge.net/projects/google2srt

Sunday, February 24, 2019

easy way to copy ssh keys to remote machines

ssh-keygen -t rsa

ssh-copy-id -i ~/.ssh/id_rsa.pub user@host

This copies the public key to the authorized_keys file on the remote machine.

Saturday, February 23, 2019

stabilizing cycling videos

In the process of making videos of my morning cycling jaunts, wanted to stabilize the video and also speed it up. Found that Microsoft Hyperlapse Mobile was doing a reasonable job, though it is limited to saving in 720p on my LG Q6 mobile. Very blocky output (probably a low-bitrate codec?) and the video goes blurry once in a while, but stability is good. Compared to kdenlive's vidstab stabilization in the video below.

Bugs and workarounds -

1. My phone doesn't show all the videos all the time, either to Hyperlapse when importing video, or via MTP to Linux Mint 18.1 on USB for taking backups. Workaround, as suggested here, was to just restart the phone.

2. Initially, I was working with kdenlive 15 which came with Linux Mint 18.1, and faced the problem of tooltips being unreadable, having white text on yellow background as mentioned in this post. Then I started using the version 18.12 appimage - that does not have this issue, and also is less prone to random crashes.

3. My equipment is the LG Q6 mobile mounted on the handlebar using a cheap mount from Amazon,

The bracket is not tight enough, and I keep needing to push it up 5-6 times per ride (if the ride is not very smooth) to prevent the phone from tilting down and capturing only the ground right in front of me. Maybe a different way of mounting the phone may solve this - will try out different orientations.

Time taken for processing -

Hyperlapse took around 10 minutes per video to import, and 2 minutes to export as 4x sped up 720p video. Input videos were 1080p 30 fps captured by OpenCamera with the phone's default bitrate and codec, 17 Mbps mp4, file size limited to 1 GB. The 1 GB had around 8 minutes of footage. So, overall speed of Hyperlapse was 12 minutes for 8 minutes of footage, 1.5x real-time.

Kdenlive + vidstab was much slower. Around 2.5x real-time for just rendering mp4 to mp4. This is at a higher bitrate, but on an i7 Macbook. And around 50 minutes for an 8 minute clip stabilization. So, for speeding up 4x and then stabilizing, it would take around 35 minutes in a two-step process, or 4.4x real-time.

So, I'm going with Hyperlapse. Maybe my colleagues with better stabilization software would prefer the raw footage, so I'm archiving the raw footage separately.

Finally, here's the comparison video -

https://youtu.be/5BYEAAn8_Ko

Friday, February 22, 2019

options when running out of space in legacy GSuite free

Copy-pasting from an email I wrote to a colleague - Regarding email - currently, our domain uses GSuite legacy free plan and does not allow expansion of the existing amount of space. So, the only way is to delete large attachments. In many cases, the attachments are required and cannot be deleted. This can be handled in many ways.

1. Forward them themewise to specially created gmail ids and then delete

2. archive them locally by storing on a local hard disk and then delete

3. automate the local archiving using some tool like

https://www.google.com/search?q=imap+archive+tool+open+source

Wednesday, February 20, 2019

videos for waiting area

We did a first test of a video screening solution for our waiting area at the planetarium. The idea is to have videos playing on the screen, with some onscreen text indicating the probable time of the next show. Raspberry Pis to play out on old surplus VGA or TV screens. After a bit of trial and error, the method used was to play videos using VLC called from a script,
cvlc -I http --http-port 43210 --http-password MyPassword --fullscreen --no-video-title --sub-source="marq{file=/pathto/marq.txt,position=10}" /home/pi/playlist.xspf

Documentation for the marq subfilter is at https://wiki.videolan.org/Documentation:Modules/marq
and the idea came from this discussion.

Auto starting using a .desktop file put in .config/autostart directory as described at
https://www.raspberrypi.org/forums/viewtopic.php?t=17051
with the contents of the .desktop file being
[Desktop Entry]
Type=Application
Exec=/path/to/my/shellscript.sh

Modifying the marq.txt is currently by ssh, need to make some better solution, perhaps using a web server and PHP or something like that. Some images below of our test setup -

Sunday, February 17, 2019

rotate mp4 video without re-encoding

From https://stackoverflow.com/questions/25031557/rotate-mp4-videos-without-re-encoding

my working commandline was

ffmpeg -i input.mp4 -c copy -metadata:s:v:0 rotate=180 output.mp4

Saturday, February 16, 2019

making a flower timelapse

Timelapses shot on 13 and 16 Feb 2019
using OpenCamera app on an LG Q6 mobile phone.

Settings:
Repeat - Unlimited
Repeat Mode Interval - 10 seconds.

So, playback at 30 fps made it 300x real-time.

Imported into kdenlive as an image sequence and then exported with pan and zoom effect applied.
Bug and workaround - kdenlive 15.12.3 which comes with Linux Mint 18.1 has an issue with importing image sequences when the numbering is not sequential, or jumps. For example, the image sequence shot by OpenCamera had filenames like

Although kdenlive would see all 463 files in the folder, the images after 85953 would be ignored, and 85953 would be repeated for those frames. Workaround was to put the 8xxx sequence in one folder, 9xxx sequence in a separate folder, etc, and then import as image sequence.

kdenlive 18.12.1 64 bit appimage seems to have mitigated this bug by just importing those frames in the sequence it recognizes, without causing any of the repeat frames. But in the clip properties, it still erroneously shows the larger number of frames found etc. So, the workaround above is recommended.

https://www.youtube.com/watch?v=tD0L7H1jbWo

Thursday, February 14, 2019

TVS MSP345 printer with Epson drivers

Using the TVS MSP345 printer with Epson 24-pin generic drivers on Linux, we need to use the resolution 360x180 - lower than that, the print quality is terrible, and higher than that, it just prints the print codes.

Monday, February 11, 2019

sending and receiving emails with domain aliases on GSuite

One of our units had two domains, longname.tld and shortname.tld - they asked if they would receive emails sent to user@shortname.tld which had been set up as a domain alias in GSuite. My reply -

The above holds good for receiving emails from username@shortname.tld

If you wish to send emails from username@shortname.tld (as against username@longname.tld), you need to follow the procedure below by logging on to username@longname.tld

(from https://support.google.com/mail/answer/22370?hl=en)

On your computer, open Gmail logged in as username@longname.tld .
In the top right, click Settings Settings.
Click the Accounts and import or Accounts tab.
In the "Send mail as" section, click Add another email address.
There, enter username@sssvv.org

You also have an option to make whichever email you wish to have as the default sending email, just below that section.

Tuesday, February 05, 2019

modus operandi for processing audio files for rebroadcast

Made this list for the people at Studio, since I would no longer be processing mandir audio for rebroadcast -

1. Listen to the whole thing (if feasible at 2x speed, or at mandir itself, while the program is going on), mark problematic parts with markers.
2. If the program is a drama that contains copyrighted songs, edit out those songs within only 10-20 seconds.
3. If the program is of poor quality, like songs which are completely out of tune, do not process for broadcast.
4. If the program has speeches which are not of general interest, or which are not suitable for broadcast due to poor delivery, do not process for broadcast. If the speech is good, but marred by repetitive words like Ummmm / Aaaah / "You know" / "Like" etc, edit those out. Also edit out any gaps like speaker turning pages, speaker drinking water, etc.
5. If it is a music program, try to cut into individual songs/announcements if possible. Filenames similar to historical filenames which you can see under MSV* and SV* in our local cdsearch page.
6. For speeches, I have been processing to remove noise as per this:
http://hnsws.blogspot.com/2010/01/tips-for-clean-audio.html or
http://hnsws.blogspot.com/2013/11/another-audio-cleanup-tool-chain-reaper.html

7. I have been skipping processing Telugu dramas for AsiaStream once TeluguStream started, so that if the Telugu team is interested, they can use for TeluguStream. Similarly now with Hindi team.

Tuesday, October 22, 2019

Saturday, October 12, 2019