Sunday, August 17, 2014

video setup troubleshooting

The video team had a couple of problems. After changing video switchers from their older Datavideo DV switcher to the newer Panasonic AG-HMX100 HD mixer, they were not able to get a composite analog video out, or IEEE 1394 (firewire) DV out for streaming, and had rigged up a camera facing a screen for getting a DV feed. Apparently the Aja Ki Pro had earlier given them a composite out, but now was not giving it. Checked, found the manual mentions that the component out has to be set to SD in order for the composite out to be available. V did it, and it worked. That composite out is given to a DVCAM tape deck, which in turn gives a firewire out to the streaming server.

The next issue was regarding sourcing of PC playback video to the video mixer. Their setup had VGA out from PC going to a video doubler connected to the display screens in the hall, and a HDMI out from the PC going to a screen with a HDMI -> DVI cable. It so happened that the HD video switcher had a DVI input, only the resolutions supported were 1920x1080, 1280x768 etc. After changing the resolution to 1280x768 (1080p not supported by graphics card) and choosing the same format 1280x768 @ 60 Hz in the mixer settings, it could recognize the PC input as one of the valid sources. 

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