Note: There is no sound.
A
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Phillips test card from Wikimedia;
Five 30 second MP4 videos derived from this image;
A
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Chinese HDTV test card from Wikimedia;
Five 30 second MP4 videos derived from this image;
A DIY
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Grey scale;
16 steps: Hex 00, 11, 22, 33, ... FF.
Five 30 second MP4 videos derived from this image;