Hello Michael, On 2023-01-22T18:50:20+0100, Michael Koch <astroelectro...@t-online.de> wrote: > This command line works with asendcmd and astreamselect: > > ffmpeg -i audio1.wav -i audio2.wav -lavfi asendcmd="4 astreamselect map > 1",asendcmd="6 astreamselect map 0",astreamselect=map=0 -y out.wav > > > However with amix filter I have no idea what's the syntax for the string > inside the string. It doesn't work. > > ffmpeg -i audio1.wav -i audio2.wav -lavfi asendcmd="4 amix weights '0 > 1'",amix=weights='1 0' -y out.wav
You've got your quotes all wrong. Always surround the complete filter-chain with double quotes and use single quotes for the individual filters. ffmpeg -i audio1.wav -i audio2.wav -lavfi "asendcmd='4 astreamselect map 1',asendcmd='6 astreamselect map 0',astreamselect=map=0" -y out.wav ffmpeg -i audio1.wav -i audio2.wav -lavfi "asendcmd='4 amix weights '\\\'0 1\\\',amix=weights='1 0'" -y out.wav See: http://ffmpeg.org/ffmpeg-all.html#Quoting-and-escaping and http://ffmpeg.org/ffmpeg-all.html#Notes-on-filtergraph-escaping. On 2023-01-22T19:21:53+0100, Paul B Mahol <one...@gmail.com> wrote: > there is way to escape stuff Can't you for once make a useful post?! -- Reino _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
