[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?


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