just so i have this next time i want to dub some audio with ffmpeg
| # mix two audio streams together: | |
| youtube-dl "https://www.youtube.com/watch?v=c38HJR-9vhU" -f best -o burnafterreading.mp4 | |
| youtube-dl "https://www.youtube.com/watch?v=Pqh63ca__mM" -f best -o chromatica.mp4 | |
| ffmpeg \ | |
| -ss 77.2 \ # skip first 77.2 seconds of first input | |
| -i burnafterreading.mp4 \ | |
| -i chromatica.mp4 \ | |
| -filter_complex "[0:1][1:1] amix=inputs=2:weights=2 1" \ # mix track 1 (audio) of inputs 0 and 1, make audio 0 twice as loud as 1 | |
| -map 0:0 \ # use track 0 (video) from input 0 | |
| -c:a aac -strict -2 \ # don't think this is necessary, default encoder settings should be fine | |
| -t 49 \ # trim output to 49 seconds long | |
| output.mp4 | |
| # replace audio: | |
| ffmpeg -i input.mp4 -i input.wav -c:v copy -map 0:v:0 -map 1:a:0 output.mp4 -c:a aac |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment