[Libav-user] 回复： 回复： just wanna get a decode demo for libav
powerpan at qq.com
Fri May 12 16:53:36 EEST 2017
thanks for the reply but your answer didn't help. first of all, i need to register a codec and open it automatically, but decode_audio.c did not show the right way.
second, I copied a third party demo, it works well but still have some warning for the OLD API and decode_audio.c did not use the latest API to demostrate what ffmpeg suggest to do. I need a perfect demo, anybody could help?
------------------ 原始邮件 ------------------
发件人: "Gonzalo Garramuño";<ggarra13 at gmail.com>;
发送时间: 2017年5月12日(星期五) 晚上9:15
收件人: "This list is about using libavcodec, libavformat, libavutil, libavdevice and libavfilter."<libav-user at ffmpeg.org>;
主题: Re: [Libav-user]回复： just wanna get a decode demo for libav
El 12/05/17 a las 07:25, 坚定前行 escribió:
that's the demo I tried
with warning 'avcodec_decode_audio4' is deprecated.
and that demo could not work with : Codec not found.
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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