[FFmpeg-user] No audio on ffmpeg output

Peter White peter.white at posteo.net
Thu Mar 4 19:14:07 EET 2021


On 04.03.21 17:38, Laura Smith via ffmpeg-user wrote:
>    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 317 kb/s (default)
>      Metadata:
>        creation_time   : 2021-03-04T10:22:01.000000Z
>        handler_name    : #Mainconcept MP4 Sound Media Handler
>        vendor_id       : [0][0][0][0]
> Stream mapping:
>    Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
>    Stream #0:1 -> #0:1 (copy)

 From the looks of it, everything should be fine. Are you sure there is
no audio stream in the resulting file? Maybe it is a playback issue.

What does ffprobe say? A simple:

$ ffprobe Output.mp4

should show the a similar output to the above.

Maybe try another program to play it back, like vlc or even ffplay. Or
perhaps audio got muted between playing back the input and output?


Peter


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