Combine audio

[xawyse]

Any Ways on Lossless-cut combine audio? I have videos with 3 audio timeline, and sometimes, rarely - i need the video that have all 3 audios to listen in a video. For Example how i fixed it by ffmpeg - "11.mp4" -filter_complex "[0:a:0][0:a:1]amix=inputs=2:duration=longest[a]" -map 0:v -map "[a]" -c:v copy "11_fixed.mp4" - Can i make it in program? Thank U....

[nicholas-greenwood]

i'm afraid there's no built-in option for a mixed export. the faq still lists combining audio tracks as unsupported, so your ffmpeg workaround makes sense

v3.66.1+ can play multiple tracks together through FFmpeg-assisted playback, but that only affects the preview

also, your example mixes 2 tracks. for all 3, the filter would be [0:a:0][0:a:1][0:a:2]amix=inputs=3:duration=longest[a]. -c:v copy keeps the video unchanged, while the mixed audio is re-encoded