[FFmpeg-user] MTS to MP4 lossless conversion issues

Moritz Barsnick barsnick at gmx.net
Sat Aug 12 23:36:00 EEST 2017

On Thu, Aug 03, 2017 at 13:59:13 +0530, akash kulkarni wrote:
> ffmpeg -i input -c:v copy -c:a aac -b:a 256k output.mp4
> it gaves me error saying
> [aac @ 0000000002a802e0]
>                 The encoder 'aac' is experimental but experimental codecs
> are not enabled, add '-strict -2' if you want to use it.
> [aac @ 0000000002a802e0]
> i am just curious to know why aac is not working with my version of ffmpeg

It *is* working: The message clearly says: "add '-strict -2'".
But as we already figured out, your version of ffmpeg was way too old.


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