On 1/22/23, Reino Wijnsma <rwijn...@xs4all.nl> wrote: > 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?!
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