[Libav-user] 回复: just wanna get a decode demo for libav

Gonzalo Garramuño ggarra13 at gmail.com
Fri May 12 16:15:48 EEST 2017

El 12/05/17 a las 07:25, 坚定前行 escribió:
> Hi,
> that's the demo I tried
> with warning 'avcodec_decode_audio4' is deprecated.
> and that demo could not work with : Codec not found.
> Best regards,
> pp
Usually, if you get "codec not found" it means your ffmpeg compilation 
was lacking a certain codec.  The audio example uses mpeg2 audio, so you 
need to have ffmpeg compiled with mpeg2.
You can check the codecs you have by doing:

$ ffmpeg -codecs

For it to work, you should have a line like:

  DEA.L. mp2                  MP2 (MPEG audio layer 2) (decoders: mp2 
mp2float ) (encoders: mp2 mp2fixed )

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