I’m trying to add 5 different audio files(they contain both audio and video streams but I’m just trying to add the audio) to a single video. and the audio streams are delayed in a way that there’s gonna be parts where there is no audio stream playing if that matters.
what I could construct using google and gpt and my little knowledge about ffmpeg is the following:
ffmpeg -i output_na.mp4 -i cameraVoip_13_4.flv -i cameraVoip_15_7.flv
-i cameraVoip_17_9.flv -i cameraVoip_17_11.flv -i cameraVoip_20_13.flv
-filter_complex " [1:a]adelay=0:all=1[a1]; [2:a]adelay=192000:all=1[a2]; [3:a]adelay=1240000[a3]; [4:a]adelay=1725000[a4]; [5:a]adelay=1818000[a5]; [a1][a2][a3][a4][a5]amix=inputs=5:duration=first[aout]"
-map 0:v:0 -map "[aout]" -c:v copy -c:a aac -b:a 192k -y output_final.mp4
but the problem is that when I run this command the output_final.mp4 plays the first audio(the one from the audio stream of cameraVoip_13_4.flv) but after that the video is completely silent and the other 4 audios wont play(and when generating the video after 3 mins which is the length of cameraVoip_13_4.flv the generation becomes x540 and almost instantly ends which probably means ffmpeg doesn’t add the audios in the first place but i don’t know why).
