[Libav-user] Unable to mux an audio only webm file using libavformat from a opus audio stream

[ravikiran.bs]

Hello,





Thanks for reply. You mean, codec_id in AVFormatContext->oformat->audio_codec ?? I am setting it. 



Regards,

Ravi Kiran B S




---- On Fri, 16 Feb 2018 20:14:08 +0530 Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote ----




2018-02-15 15:47 GMT+01:00 ravikiran.bs <ravikiran.bs at zohocorp.com>: 

 

> I am trying to mux a opus audio stream to a webm file. (I know audio only 

> can be muxed into a ogg container. I tried that. But, FFMpeg is not 

> detecting the file format when I write the file headers using 

> avformat_write_header() of libavformat). I have configured the FFMpeg build 

> with --enable-libopus and --enable-libvorbis. Now, after writing the audio 

> data when I call av_write_trailer() to close the file, it is throwing the 

> following error : 

> 

> "Only VP8 or VP9 video and Vorbis or Opus audio and WebVTT subtitles are 

> supported for WebM." 

 

It appears you did not set codec_id to AV_CODEC_ID_OPUS. 

 

Carl Eugen 

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