Step 2 will take a bit longer, but I want to get it on the roadmap to keep ffmpeg-python easy to use. I can't work on it tonight but will hopefully get step 1 done in the next day or two. video() on their input stream, and ffmpeg-python won't try to hold their hand.Ģ: Make it so that audio streams are automatically processed and mapped separately, in an intuitive but predictable manner. And if someone really wants the default ffmpeg behavior of dropping audio streams, all they'd have to do is put. That way we get all of the power of ffmpeg but none of the headache of having to keep track of separate streams, at least for simple examples. If you put it after in, it probably fade in. ffmpeg -i input.mpg -vf 'moviewatermark.png, fadein:0:20 logo in logo overlayW-w-10:H-h-10 out' output.mpg. If you want to fade-in the overlay it should work this way (separate filter commands with commas).
ffmpeg-python would expand it to the more complicated picture as needed: You have to do it all in one -vf chain but you don't need to run FFmpeg twice.
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