NTSC video capture


I'm attempting to implement a hardware filter on an incoming video signal (either S-video or composite) using a Xilinx V2Pro and a VDEC1 daughterboard from Digilent.

I'm attempting to test my HDL implementation, but can't seem to find a way of simulating the video stream itself. Based on what I've read the video will be in the formats found in ITU656 and ITU601 (NTSC). What I'd like to do is have a file containing a digital stream in this format, and use it in a testbench to verify my design.

The problem here is that I cannot seem to find either some method to convert video or image files into such a stream, or an existing stream for testing purposes. While I could (and am) write such a conversion script myself, there is the risk that I'm misundestanding the format, and will be testing my HDL module against an invalid data stream.

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Matt Fornero
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formatting link

about half way down there is an ntsc test pattern signal. The format (I believe) is 8 msps complex in 16-bit I an Q samples.

If that's no good you can ask around the gnu radio message board to see if someone will record some OTA samples for you.


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