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Looks like ffmpeg needs to see the quotes around the parens, so you need to protect them from the shell with another layer of quotes. ffmpeg -i ~/Downloads/in.mov -vcodec copy -af "volume=enable='between(t,0,3)':volume=0" ~/Downloads/out2.mov Also, don't forget to specify something about the audio codec. ffmpeg's default AAC encoder is bad compared to ...


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Got it. The error is cuased by the font location in the command is of a Linux computer. The font location need to be different for windows. The error caused by this line in the command: drawtext=fontfile=/usr/share/fonts/truetype/DroidSans.ttf The above line does not work in Windows. For windows change to: drawtext=fontfile=/Windows/Fonts/arial.ttf


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If you want to mute the first 3 seconds of each audio stream then you have to filter each one: ffmpeg -i input.mov -filter_complex \ "[0:a:0]volume=enable='between(t,0,3)':volume=0[a0]; \ [0:a:0]volume=enable='between(t,0,3)':volume=0[a1]; \ [0:a:0]volume=enable='between(t,0,3)':volume=0[a2]; \ [0:a:0]volume=enable='between(t,0,3)':volume=0[a3]; \ ...


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I've reported the issue on Debian bug tracker here, as well as upstream here. Really the only available reference implementation can be found here.


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LordNeckbeard explained in his answer, why the given ffmpeg command line does not provide any known advantage. But what - in general - could be reasons to transcode? Available input codecs/containers of your NLE (video editing software) There are hundreds of codec/container combinations out there, and maybe your NLE has just problems with the one that ...


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On this page author reencodes MP4 from GoPro to MOV for "easy post processing". Why the processing becomes easier after that? The author provides no explanation and does not go into any detail of what he means by "post processing". What we know: The author's ffmpeg command is using the encoder mpeg4 which will output MPEG-4 Part 2 video (like the old ...



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