[FFmpeg-devel] [PATCH] lavfi test pattern generator

Stefano Sabatini stefano.sabatini-lala
Sun Dec 28 19:51:36 CET 2008

Hi all,

useful for testing, it is based on the test pattern generator by
Nicolas George:

basically I just stripped the audio signal generator and adapted few
things to the lavfi framework, so most credit goes to Nicolas.

And it would plenty cool to find some way to get ffmpeg/ffplay take as
input such a generator, but I still can't see how to do that.

What I can do now is to take as input /dev/null, then overlay the
test_pattern over it, but this is rather ugly.

FFmpeg = Freak and Fierce Mysterious Proud Erratic Gadget
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