Saturday, December 31, 2011
Thursday, December 29, 2011
Akamai offered minimum commit of Rs. 1.5 lakhs per month.
$2000 for 2000 GB, around $1 per GB till 10 TB.
Internap offered a free unlimited streaming account till Dec 30th, but pricing was minimum commit $1000 with traffic charged at $2 per GB. Also, using their test account, found:
- the sample flash player provided by internap was crashing in Safari
- the sample flash player also did not allow the hiding of controls - controls were always visible onscreen
- we were unsuccessful in getting jwplayer to work with the internap stream, even after the suggested setting of rtmp.subscribe flashvar to true.
Wednesday, December 28, 2011
Tuesday, December 13, 2011
type "Are you sure you want to shut down the server? Press any key to continue"
shutdown -m \\servername -t 10 -c "Shutting down server in 10 seconds"
To start up the server, I mentioned Wake up On Lan to them, but their BIOS had another option for timed startup, so that is what they are using - starts up at a particular time.
Monday, December 12, 2011
Saturday, December 10, 2011
iMovie for MacOS X 10.4 Tiger - iMovie HD (obtained with a torrent) seemed to be the last working version - iMovie 8 did not run on this machine.
iMovie was capturing the video as .dv files, and the files were being hidden inside the project "file" which was actually a "Package" - so in Finder you right-click and "Show Package Contents" to see the Media folder inside. To convert .dv to .mov without re-encoding, used MPEG Streamclip.
Edit: Finally this solution was abandoned - the .mov produced in this manner still needed rendering on FCP at the Studio. Then tried capturing in an old version of FCP, that worked without rendering.
Thursday, December 01, 2011
Wednesday, November 30, 2011
Edit: Most problems have a brute-force solution! Resized the images by a factor of half, halved all the pixel values in the css, et voila - a half-sized player! That was too small, so multiplied again by 1.4 to get the size we want.
Wednesday, November 23, 2011
When the Wowza streaming server was serving at around 600 Mbps, that is around a 1000 clients, top reported the following usage of memory and cpu:
Since this is a quad-core machine, probably top reports 100% as maxing out a single core. So, we have plenty of cpu to spare, and could easily max-out the 1 Gbps port. (And that's what we did .... running video at 800 kbps per instance.)
Later, P removed around 70 GB (!) of old database backups.
Sunday, November 20, 2011
#1 - Can\'t create/write to file \'#sql_abc_0.MYD\' (Errcode: 17)
Reported it to nettigritty support, they restarted the service, everything became fine.
Saturday, November 19, 2011
P wanted the timezone on the server to be set to IST, for ease of recognizing recorded files etc. Did it with dpkg-reconfigure tzdata
which is the Ubuntu way of doing it at present.
Then: the flv video which we saved on the server seemed to have an NTSC flag set somewhere. Probably originating from the Adobe FMLE (Flash Media Live Encoder). So, the video was being seen with a skewed aspect ratio even though it was square pixels 400x224 25 fps. Finally solved it at the client side using stretching:"exactfit" as a parameter for the jwplayer.
There are different ways of recording.
1. using live-record as stream type in Wowza. This does not give us control over when recording starts - recording starts as soon as the source gets connected.
2. using the LiveStreamRecord addon module, we can choose when to start recording and when to stop.
So, we used the latter, set up a password protected page on our website for the record enable form which is included with the module. We set it up not to overwrite (so it would create a new file like myStream.sdp_2.flv etc increasing the number to _3, _4 etc.) Also set it to start on keyframe and record data. (Metadata, I suppose.)
First we tried setting up http pseudo-streaming with mp4 on Apache. After setting up the module for streaming video the seeking was not working properly for parts of the video which had not yet been downloaded - jwplayer was playing the beginning of the video after the seek.
Then the audio and video were coming out of sync on the recorded mp4 file. It looks like many people have faced this issue.
So we tried recording as flv files instead. With that, the audio-video sync problems were solved. But since the module for flv seek over http uses Lighttpd - setting it up was a bit of a pain - we fell back to providing the video over rtmp using Wowza's vod application. That, of course, worked perfectly.
Friday, November 18, 2011
Setting up a download link - I tried to do this by adding the .htaccess file like in dl.radiosai.org with the lines
Header set Content-Disposition attachment
But this did not work, even when I modified the config file again, as in
adding the line
AllowOverride AllSo, did it by editing the config file:
Header set Content-Disposition attachment
Wednesday, November 16, 2011
After setting up Wowza server as per my earlier post, tried to get the live stream to work on iOS devices - iPad, iPhone, iPod touch etc.
To make the stream work with iphone, the encoder settings have to be tweaked. Format has to be H.264 and AAC audio. Otherwise the device gives the message, "This video cannot be played."
AAC settings should be low complexity - I found 22050 Hz, mono, 32 Kbps to work OK.
H.264 settings have to be Baseline 3.0
(set by clicking on the spanner icon next to Format: H.264 in Adobe Flash Media Live Encoder)
When this is done, the following url works for iOS devices, when entered into Safari on iPhone, for eg.:
(entering this URL on a normal computer does not work).
In order to make this work with the jwplayer, which we can embed in a page which will work for desktop browsers as well as iOS devices, the player had to be updated to the latest version - 5.8. Then the sample code for embedding worked fine.
Tuesday, November 15, 2011
First attempt was to replicate my earlier test, and set up the C++ RTMP server. That involved re-compiling from source, since the binary did not seem to run on the Ubuntu machine.
1. Checking cpu type:
cat /proc/cpuinfo shows it is
Intel(R) Xeon(R) CPU X3330 @ 2.66GHz
2. so trying crtmpserver-690-Ubuntu-10.10-i386.tar.gz
3. Procedure as in my earlier test
4. Gave error "no such file or directory" when tried to run the executable.
ia32-libs recommeded by this launchpad post.
5. apt-get install ia32-libs and then tried. Then the executable runs, but seems to have some error, since the console doesn't come up. Tried with the 64 bit binary also, still no go. So, tried the sources from http://www.rtmpd.com/downloads/
6. For that, while following the instructions to install at the rtmpd site.... had to install lots of stuff.
set CMAKE_CXX_COMPILER to a valid compiler path or name -> apt-get install gcc
apt-get install g++
OPENSSL_INCLUDE_PATH-NOTFOUND -> as per this forum post,
apt-cache search libssl
Then I installed apt-get install libssl-dev
Finally worked. Binary is in /root/crtmpserver-690/builders/cmake/crtmpserver folder.
C++ RTMP server does not have the nifty features of Wowza, does not automatically make the http pseudo-streaming chunks for streaming to iPad etc. So, decided to go for Wowza server after all.
Monday, November 14, 2011
Actually a related topic, checking if the analytics code is working:
this method uses Firebug, with the Net panel enabled. We should be able to see requests starting with _utm.gif? - and the params tab gives the info being sent to Google.
Ted talk quality, for eg.
- wireshark clocked it at 0.415 Mbps - let's say 400 kbps.
(Ted uses variable bit rate streaming - bitrate changes with scene as well as with bandwidth availability)
Youtube video at 360p -
21.6 MB for 8 minutes 45 sec
21.6 MB/525 seconds
= 0.0411 MB/s
= 0.329 Mbps, close to 300 kbps.
But these are all offline encoded videos. For live encoder, quality will be somewhat lower for the same bitrates.
Saturday, November 12, 2011
The last two, adOpenKeyset,adLockOptimistic were the ones added to the line.
Friday, November 11, 2011
Allows operations on the entire image, like blur etc. Quite fast, even for large images. Is perhaps faster than doing it in Irfanview - though I did not try a comparison. But not really a replacement for Actions on Photoshop. For that, scripting is required, I suppose. Perl, anyone?
Thursday, November 10, 2011
Version : 4.2.1 (8C148)
Modem Firmware: 05.15.04
Carrier : AT&T 9.0
Model : MB702LL
Jailbreakme.com does not work with 3G - only with 3GS and above, I think. I gave him a link to pwnagetool, but he did it with redsn0w instead. He noted the following:
1. Could not download - redsn0w 0.9.6b6 managed with redsn0w_win_0.9.6rc16
from apple's site.
3. redsn0w_win_0.9.6rc16 kept crashing. This forum post helped with the following suggestion, which made it work.
After couple of minutes Redsnow just shuts down (disappears)4. Could not add source http://repo.ultrasn0w.com to cydia
what cause this problem ?
first install only cydia. don't tick the update baseband
after jailbreaking then you can fetch baseband tick only update baseband.
followed the alternate repository given at http://nabtron.com/ultrasn0w-
Tuesday, November 08, 2011
finally used this technique,
Monday, November 07, 2011
Tuesday, November 01, 2011
Checking the GA help center as suggested in that page, this page seems to indicate that signing out of the account instead of remaining signed in all the time solves the issue. We'll try doing that.
This could also be an issue with freenet.de - because the other complaints listed on Google's forums are also from freenet.de customers. So if you get a bounce message like that, you could try sending the email from another email id instead of the freenet.de id.
Saturday, October 22, 2011
Tuesday, October 18, 2011
given in the tutorial here doesn't work too well because of the fisheye camera rig. When rendered with the fisheye camera, the alpha channel includes the whole circle - since that is what is being reflected on the fisheye rig's mirror. So, the scene when rendered will not include the background image inside the circle at all - only in the corners, which is not useful at all.
One of the comments in the above tutorial mentioned simply using a paper sky in World settings, and then enable Horizon in Influence settings. That works well with normal cameras, but had a problem with the reflection from the fisheye rig - with a ring around the horizon of the fulldome - it looked like this:
Anyway, going through the Blendercookie/CGcookie tutorial was a good learning experience, especially since it took me to his previous tutorial, and I learnt the reason for the scale - dimension problem I noted earlier. Apparently if you change the dimensions of an object in Object mode, the scale goes out of whack. To correct it, he does Ctrl A, and chooses Scale. Then - et voila - the scale goes back to 1.0 and the dimensions are preserved.
Monday, October 17, 2011
Rotation - X = 125, Y = 0, Z = 0
Location - X = 0, Y = 0, Z = 1.3
This gave an effect similar to the video part in the TSPOG show - probably I need to add some blurring on the blank black area outside the video window like in that show. Rendering took around 1 minute per frame with two threads, and 2 minutes per frame with a single thread. Sample fulldome frame was like below.
Saturday, October 15, 2011
Things to remember:
- UV mapping means wrapping the texture around the object - U and V are used to describe the 2D mesh since X and Y are already taken!
- For the planet, the mapping used was Co-ordinates = Object, Object = Sphere, Projection = Sphere. (Not Co-ordinates = UV!)
- Smooth shading: as given in Ron Proctor's tip here, using smooth shading makes the sphere look much better. Accessed from Object tools - T after selecting the object.
- The plane could be of the same dimensions as the movie, so for a 4:3 movie, a plane of dimensions x=4 and y=3 is good.
- In such a case, the texture mapping to use is Co-ordinates = Generated, Projection = Flat, and Extension = Clip.
- For ease of placement of camera(s) and the plane, the N key which brings up the properties allows numerical entry of values.
- As mentioned before, Emit=1 and Specular=0 are good for video textures.
- In some tutorials like this one, the rotation animation is done by entering a value like 3600 degrees for 10 turns. But when I tried entering a value of 360 for rotating the camera a full circle, it did nothing. When I tried 340 or 370, the camera moved only by 20 or 10 degrees respectively. So I settled for 180 degrees in my test.
Friday, October 14, 2011
- Textures need to be in UV mapping mode for them to be displayed properly in this model - Mapping -> Co-ordinates -> UV - and I had to manually map the texture bitmaps to the relevant materials in the model.
- Blender's Textured Viewport shading only works if object has a UV mapped texture (in general).
- Imported model was extremely large as seen in default Blender view. Scaling it down was easier than moving the camera and lights out.
- Ctrl Alt Numpad 0 puts Camera to current view.
Wednesday, October 12, 2011
Today, I dove a bit deeper, to take the first baby steps towards making our own fulldome show. Printed out the cheat sheet from qubodup and went through the first few getting started tutorials again to refresh my memory.
- Right-click to select an object.
- Middle-click and drag to move around in the view-port, with Shift and Ctrl as modifiers for pan and zoom respectively.
- Shift+A to add an object
- N to numerically adjust location and size
- S R and G for Scale, Rotate and Grab, with X Y Z for constrained motion along those axes.
- TAB to toggle Edit mode and Object mode
- Shift+F10 Image Editor (where rendered output is seen)
- Shift+F5 3D viewport
- Numpad 7 1 3 for Top Front Right views, 4 6 8 2 for rotate, 5 for toggling perspective and orthogonal views.
- Numpad . for Zoom to object.
- Extrude tool seems to Extrude only along the natural face of the object - some sort of constraint somewhere.
- When I change dimensions of an object using N and then render using F12, it is going back to its original dimensions!
Would probably want to make a set of stills or videos move around the dome as in the IBEX show.
Tuesday, October 11, 2011
Monday, October 10, 2011
Sunday, October 02, 2011
Googling various terms, the first thing I tried was to use TinyUmbrella to kick the phone out of recovery mode, as given here. That did not work. TinyUmbrella was not able to see any info on the phone, not even ECID.
Gathered info including ECID using USBview as given here.
This particular forum post seemed promising - Did I ruin my 3GS . As suggested there, tried the untethered jailbreak with sn0wbreeze, with the tutorial given at this page. Making a bulleted list of the many trials I did - the last two are the successful ones:
- I tried first with the later version of sn0wbreeze, using OS version 4.3.2 instead of 4.2.1. After creating the custom IPSW with sn0wbreeze, iTunes did not allow the update - I thought it was because TinyUmbrella's TSS server was not running. Making a custom IPSW was taking around 5 minutes on my phone.
- At this point, TinyUmbrella was not able to save any blobs - it was not seeing any blobs on the phone. Running iTunes with the TSS server also did not work, it ended with error 1602. The update process in iTunes was taking around 5 minutes.
- The solution for that was to run sn0wbreeze till the end - I thought the phone was already in DFU mode, black screen - but it needed to put the phone in a pwned DFU mode.
- Running sn0wbreeze till the end where it uses iReb to avoid the 16-- errors, the update went till the very end, but then error 37 in iTunes.
- In the above trials, I had chosen New Boot Rom within sn0wbreeze. Perhaps that was the culprit. So made another IPSW with sn0wbreeze, chosing Old Boot Rom.
- This time it went through, iTunes declared it successful, but phone did not boot. It remained in DFU mode even after reboot.
- TinyUmbrella was able to save some blobs now, and it showed 4.1 and 5.0 beta blobs. So tried the same update, with the TSS server running this time. Same result - iTunes success, but phone doesn't boot.
- Tried New Boot Rom IPSW with TSS server - again error 37.
- Tried New Boot Rom IPSW without TSS server - error 3194 this time. "This device is not eligible for the requested build" - so probably I should go with Old Boot Rom and not New.
- Back to making an Old Bootrom IPSW, on a different usb port, without TSS. Stuck at preparing iphone for restore.
- Tried a different tack - since 4.1 blobs are seen in TinyUmbrella, why not try with that one. For this, downloaded sn0wbreeze 2.1. This time, it worked like a charm - running iTunes with TinyUmbrella's TSS server on. The phone booted up. But it is not unlocked yet.
- To unlock 4.1, this page points to this guide - just need to add repo666.ultrasn0w.com to the sources in Cydia (it was already there) and install ultrasn0w using Cydia Search. Did so, rebooted, and the phone is unlocked, working fine.
Wednesday, September 28, 2011
sudo apt-get install ntp
I guessed that the firewall might cause problems, and sure enough, checking the status with
found that the peer was not being contacted, the reach was 0. Added a firewall rule for NTP for the DMZ, and all was well.
Monday, September 26, 2011
1. Added new BC Broadcast Center Name: DiscourseStream Bcid: 9
2. Modified the changeover time from 5:00AM to 7:00AM to avoid import issues for the schedule database
3. Modified Playlist import script for Discourse Stream and commented out Asiastar
4. Added SIGNATURE_TUNE to the beginning of playlist files that were already created.
5. Modified the cron for changeover in the remote server from 5:00AM to 7:00AM
6. Added two hrs of DD to today's playlist so that the changeover takes place tomorrow without a break and reuploaded.
7. Modified the csv script to generate csv for Discourse stream
8. Skipped the instrumentals being listed in the csv for DD
9. Modified the schedule database for discourse stream to have the changeover @ 1:30 GMT (7:00 am IST)
10. Added a single program item to start the 27th csv import (NOTE: It can be done only through IE)
11. Uploaded the csv for 27th Sep 2011
12. Modified the DD making script to add signature tune in the beginning of the playlist.
Monday, September 19, 2011
Saturday, September 17, 2011
Coming back to this iphone, installed the following from iTunes on the PC:
Battery Magic - uninstalled due to a startup screen which could not be removed due to non-working touchscreen portion
Compass Free - uninstalled as the iPhone 1st gen doesn't have GPS
Remote Desktop Lite
GPS Tracker - uninstalled as the iPhone 1st gen doesn't have GPS
iTalk Recorder - uninstalled as phone call recording needs paid service.
Got Veency in Cydia installed through iSpirit which was mentioned at this forum page. Then onwards it was fairly straightforward to do anything on the phone, since the VNC client could click even in the places where the touchscreen wasn't working. Mobile Terminal was one of the nice apps loaded through Cydia.
Saturday, September 10, 2011
Trying to get ebooks into it. SSH not working - probably not installed, though Cydia is present. Trying to install SSH gave an error message in Cydia about being unable to download files - probably an old repository. But cannot click on the OK button for the message. That was in the bad portion, and landscape mode is not available for that screen.
Tried to use the Kindle app - it needs registration, and in portrait mode, which does not work with the keypad. I did not try copy-pasting the username and pw - that might have worked. But anyway, went on to try iBooks. Unfortunately iBooks needs iOS 3.2 and higher, and this is a 1st gen iPhone with iOS 3.1.3. Then tried Stanza, that one works.
Transferring files to Stanza - all the methods seem to need Stanza to pop up a confirmation dialog asking if I want to download - and the Download confirmation button comes up in the non-working part of the screen! Finally got books to transfer using iPhone Explorer.
Tuesday, September 06, 2011
Quite simple procedure as given at the dd-wrt wiki. Ours was E4 and not E3. Read somewhere on the forums that changing the last number from 0 to 1 in the E3 firmware with a hex editor makes it work with E4. Tried that, it works. Did the Hex editing of the firmware using Free Hex editor Neo on Windows. The firmware labelled as E4 in the dd-wrt site has 5 as the last digit - that apparently makes it not compatible with our E4 version.
But plugging it in our network, it didn't work. At first I thought it might be a MAC address caching issue, and tried cloning the old router's MAC address. That also did not work. Then did some tests and found that it was just not routing - logging into the router, ping works in both directions LAN and WAN. But the LAN can't ping the WAN and vice-versa.
Tried posting on the dd-wrt forums, here and here, but finally did not get any solution. Assuming that some hardware limitation prevents it from working as a router without NAT. And the google answers page recommended routers seem to be scarce. The Linksys WRT54G is superseded by the WRT54GH which doesn't support routing mode, for example.
Sunday, August 28, 2011
Saturday, August 27, 2011
Friday, August 26, 2011
The router which failed yesterday - DLINK DFL-210 - cost around Rs. 22,000
Both these models are no longer available. DFL-260 is a possible replacement, PB checking Indian market cost found it to be around Rs. 50,000.
Monday, August 22, 2011
On saiwaves :
On colinux :
Thursday, August 18, 2011
This page says that with some firewalls you should connect to the firewall and then connect to the host etc. Tried that, doesn't work.
I suspect that the problem is with the way in which php handles ftp commands. When a put command is sent on our system, cyberoam responds saying delayed due to scanning, and then uploads.
150-Scanning file for viruses
150-There'll be a delay while we scan for viruses
150 Data connection already open; Transfer starting.
221-Scanning for virus
221 Transfer complete.
I think php's ftp library does not handle the ftp 150 commands, hence it fails.
I have currently commented out the ftp upload part in the mkcsv php script.
This causes some files not to be entered into database, so when importing playlist, it complains that some fids are NULL
Wednesday, August 17, 2011
Tuesday, August 16, 2011
2. Copy relevant m3u file to ~/playlist directory.
3. cd to playlist directory and run the sed script modifying the commmandline to relevant date, which converts the extended m3u to simple m3u and appends the audio directory path.
4. run ~/scr*/lame_encoder2422.sh
5. Open playlist from step 2 in kwrite and change / to \, save as m3u
6. Open the m3u playlist in Winamp after lame finishes, to check that all files are present - total duration should be 24 hours and a bit, and it should not show a + symbol after the total duration.
If playlist generation is desired, additional steps:
7. Run scr*/main_ftp.sh which takes files from ~/ftp folder
8. upload files from ~/ftp folder to dl.radiosai.org
9. Run scr*/playlist_import.sh
10. Update missing descriptions from localhost/SGHDescription as with sgh database, if necessary copy-pasting from sgh database
11. Make csv and upload from localhost/mkcsv
to 2011-08-16 06:30:00+05:30 during the import process. So, verify if the correct timestamp should be 00:00:00+05:30 and then edit the entry manually from 06:30:00+05:30 to 00:00:00+05:30 .
The point to be noted is that the problematic entry may not be adjacent to the actual 06:30 signature tune file, it could be at midnight also.
Saturday, August 06, 2011
Friday, August 05, 2011
View Settings Window -> Sky tab -> Absolute scale = 2 makes everything bigger and hence brighter, and Relative scale = 0.2 or so makes the stars uniform in size instead of brighter stars being as big as oranges! This makes the night sky much better to look at, more like a "starball" effect.
When I tried it with a pan of the SSSIHMS, a hi-res version of this picture, found that it looks squished on the dome - need original to be more squarish? Also, building is too far above the horizon. Need more sky and less ground. So, probably the solution would be to take a pan with the interesting parts near the bottom edge of the pic, and clone the sky to make it square instead of distorting it by simply resizing.
Friday, July 29, 2011
This post seemed to have the solution:
So, sign in, and then use the following url for the csv file:
where you must change the date 20110727 for the relevant date. We also have to remember that google servers use US time, so today is still 28 July for them and not 29 July.
Wednesday, July 27, 2011
cat 26th_JULY.m3u | sed /^#/d | tr '\\' '\n' | tr '\r' '\n' | sed '/\(.mp3\)\|\(.MP3\)\|\(.Mp3\)
sed /^#/d Remove the lines starting with #
tr '\\' '\n' The windows path backslash (\) is changed to line feed
tr '\r' '\n' The Carriage return is changed to line feed
Added tr '\r' '\n' on 26th July 2011.
The line used to end with both \r\n which made ices fail to start the playlist.
\r - Carriage Return - 0D in Hex
\n - Line feed - 0A in Hex
Saturday, July 16, 2011
But in general, this is a bit risky - a better way to do announcement insertion would be to drag and drop the relevant files into the timeline on Reaper. This can be done even when Reaper is recording. The track into which the file is dropped should not be armed for recording - only then will the file play back if Reaper is recording on another track.
Friday, July 15, 2011
Did some troubleshooting by starting the server from the command line.
Found that the reason it gives for the other ports not to work is:
error opening client socket! FATAL ERROR! Some other process is using this port!
So it is not the service provider's fault.
When I test with telnet, I find (after stopping shoutcast)
telnet stream.radiosai.org 8021
Connected to stream.radiosai.org.
Escape character is '^]'.
GET / HTTP/1.1
Yesterday when I tested, ports 8023, 24 and 25 were also probably occupied by the other process. Today, those ports were open, and shoutcast could use those ports.
Netstat -a -b -n -o > c:\netstatnames.txt
and searching for 8021 in that file,
found that the process is
So, requested that the Gene ftp be tweaked so that it uses only ports above 8100 for listening, like 8121 etc. That solved the issue.
Wednesday, July 13, 2011
Shortcuts on desktop for these bat files have been created. So, one minute before the live broadcast is to start, like 4.29 pm for the evening programme, just login with Remote Desktop and double-click on the respective icon.
To stop live, wait 70 seconds after the ending point - usually the Jaikar after Arati - and double-click the stoplive bat file. The BUTT has to be running during these 70 seconds too. This is because of buffering of the stream by the Shoutcast servers.
Edit: Initially we experimented with using Scheduled Tasks to automate the changeover, at least for the startlive which was a fixed time. But Scheduled Tasks don't run if the password is changed, and then we would also have issues when DST kicked in. So, decided manual change-over was better. And the next day the manual change-over came in useful when we had a long power outage at the Studio and could not change to live till 50 minutes into the morning session - recorded filler was played on air at that time.
Thursday, June 16, 2011
1. The script mount_cd.sh had a call to the binary message
Tuesday, June 14, 2011
Yes, the issue could be the windows file system size or its way of dealing with long file names. But the failure in reading might even be due to Colinux. Windows has never complained in sending the data to Colinux but CoLinux always complains in not able to read the data. The Colinux change log does mention about I/O errors.
Was going through this link on Working with File Systems which says:
If you use a large number of files in an NTFS folder (300,000 or more), disable short-file name generation, especially if the first six characters of the long file names are similar.
Every time you create a file with a long file name, NTFS creates a second file entry that has a similar 8.3 short file name. A file with an 8.3 short file name has a file name containing 1 to 8 characters and a file name extension containing 1 to 3 characters. The file name and file name extension are separated by a period.
If you have a large number of files (300,000 or more) in a folder, and the files have long file names with the same initial characters, the time required to create the files increases. The increase occurs because NTFS bases the short file name on the first six characters of the long file name. In folders with more than 300,000 files, the short file names start to conflict after NTFS uses all the 8.3 names that are similar to the long file names. Repeated conflicts between a generated short file name and existing short file names cause NTFS to regenerate the short file name from 6 to 8 times.
To reduce the time required to create files, use the fsutil behavior set disable8dot3 command to disable the creation of 8.3 short file names. (You must restart your computer for this setting to take effect.) For more information about disabling 8.3 short file names, see “MS-DOS-Readable File Names on NTFS Volumes” later in this chapter.
If you want NTFS to generate 8.3 names, improve performance by using a naming scheme in which long file names differ at the beginning of the name instead of at the end.
But again, disabling 8.3 filenames systemwide seemed a bit drastic, and could lead to other unexpected problems elsewhere. So, for now we have not done the disabling.
This one, for eg. is around Rs. 4.5k in the UK while in India, the listings start from 10k. Other cheaper options in India other than mobile phones are products like this Asus box for around 6k. What you have to look for in products which allow you to listen to Internet radio stations is: do they allow you to enter custom stations - if yes, then you are safe. Otherwise, do they use the Reciva online database - if yes, then also it is safe, since Sai Global Harmony all streams are listed in Reciva. If the player uses a custom database and does not allow you to enter your own stations, then you may not be able to listen to SGH with such a player.
Monday, June 13, 2011
1. The changeover actually happened at around 6.32 as heard on the stream, but the shoutcast server went into the interruption music for more than ten minutes more, till the signature tune finally came, around 6.44. Meaning the stream is buffered by 14 minutes due to the two servers?
2. By afternoon, the delay was around 7 minutes - The dd which was supposed to get over at 2.41 was heard to end at 2.48. So somehow the buffering delay was reduced ?!
Friday, June 10, 2011
Wednesday, June 08, 2011
- Moving the mirror up by a few inches more now allows us to bring the horizon a bit lower in the front area of the tilted dome of the theatre.
- Moving the projector laterally left-right corrected the tilt in the reflected image, where earlier the left side of the reflected image was around a foot higher than the right side - for this, we moved the projector physically to the right.
- Moving the projector towards and away from the mirror, and adjusting the zoom setting allowed us to reduce the shadow area right above the mirror. Covering a larger area on the mirror makes the shadow smaller and vice-versa.
- Using the Bright mode instead of Custom mode in the projector, the colours are a bit better though the brightness levels are quite lower. This has to be further tuned.
Wednesday, June 01, 2011
When you delete the group, you should be able to recreate a user of the same name immediately. The 5 day wait period only occurs when you delete a user and try to recreate a user of the same name. Deleting a group or email alias does not lock out that address for 5 days like it does when deleting a user.Also, Google Apps seemed to have removed the online IMAP migration tool from within the Domain control panel. So the email migration has to be done using the Google Apps Migration for Microsoft Exchange utility .
Once you install it, the setup is like the screenshot for migration from gmail:
In case it asks you for changing the consumer key, you have to log in to google apps as webmaster and copy-paste the new key.
The users csv file should be of the form
(Please note that the @google.apps.domain is not required for the second field.)
Unfortunately, this tool takes a lot of bandwidth, needs the computer to be on all the time it runs, and is much slower for gmail to gapps migrations than the online IMAP migration tool. A sample run is:
Info:Start local time is: 2011:06:01 13:56:12
Info:Migration start local time is: 2011:06:01 13:56:12
Start: Now migrating user=**********
Start: Migrating Email for store=**********
Start: Migrating 105 messages from Folder [Gmail]/All Mail for store=**********
In progress: Migrated 100 out of 105 messages from folder [Gmail]/All Mail for user.
Success: Migrated 105 messages from folder [Gmail]/All Mail for store=
Info:Migration end local time is: 2011:06:01 14:25:19
Info:End local time is: 2011:06:01 14:25:19
So it took half an hour for 100 mails.
Sometimes, when using sftp and it stalls, if we kill the process, then the file at stream.radiosai.org becomes orphaned or something like that. If we delete the file, then also the file appears in ls. After a day or two it disappears on its own - probably when the process times out or something like that.
Saturday, May 07, 2011
Friday, April 29, 2011
Did initial installation using a borrowed Apple Cinema Display from the video studio, which had an Apple mini display port cable. Apparently Apple's "Allow Remote Management" opens up a vnc server. So, standard VNC clients can be used to connect. On Developer, installed tightvnc since it has the nice option of scaling Desktop to fit window.
Can log in with ssh or vnc. For vnc, two passwords - a vnc password, and then the user password on the server. The former similar to saiwaves, the latter similar to the router.
For using the Remote Desktop tool, I believe each client needs to have the Remote Management Enabled, under System Preferences -> Sharing.
Later, registered some of the studio machines' Applecare Protection Plans: googling "Register Applecare Protection Plan" gets this registration page, where once you have an Apple Id, you only need the Applecare serial number, which is inside the product box, and the serial number of the hardware. For the Macs, this is under Apple menu -> About this Mac -> More info -> Serial number (Hardware).
Friday, April 22, 2011
Wednesday, April 20, 2011
- Corrected db pw on the script on krishna's cron
- Corrected IP address on the script on saiwaves's cron
- Added scp with -r option to copy over the krishna backups to saiwaves.