On 1/22/23, Michael Koch <astroelectro...@t-online.de> wrote: > Am 22.01.2023 um 16:56 schrieb Michael Koch: >> Am 22.01.2023 um 16:25 schrieb Paul B Mahol: >>> On 1/22/23, Michael Koch <astroelectro...@t-online.de> wrote: >>>> Am 21.01.2023 um 17:05 schrieb Paul B Mahol: >>>>> On 1/19/23, Michael Koch <astroelectro...@t-online.de> wrote: >>>>>> Am 19.01.2023 um 15:49 schrieb Alexander Bieliaev via ffmpeg-user: >>>>>>> How can I replace a part of the audio from and to a specific time >>>>>>> with >>>>>>> some >>>>>>> other audio/sound (I want to replace it with beep in this case)? >>>>>>> >>>>>> Here is an example: >>>>>> >>>>>> ffmpeg -lavfi sine=500:d=10 -y audio1.wav >>>>>> ffmpeg -lavfi sine=2000:d=10 -y audio2.wav >>>>>> >>>>>> ffmpeg -i audio1.wav -i audio2.wav -lavfi >>>>>> [0]volume='1-between(t,4,6)':eval=frame[a];[1]volume='between(t,4,6)':eval=frame[b];[a][b]amix >>>>>> >>>>>> >>>>>> >>>>>> -y out.wav >>>>> That is never going to give smooth transitions. >>>>> >>>>> Also overly complicated as can be simplified with commands to to amix >>>>> filter. >>>> If my example is too complicated, then please show a simpler example. >>>> >>> asendcmd=10.0 amix weights 'X Y', >>> >>> X/Y being wanted volume of first/second input to amix filter. >> >> That doesn't work because the argument of asendcmd must be >> encapsulated in quotes (because it contains spaces), and X Y must also >> be encapsulated in quotes. Please show the whole command line. >> > > 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
there is way to escape stuff _______________________________________________ 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".