[Libav-user] using avformat with external hardware codec

[Jan Pohanka]

> What parameters need to be set avformat? I have tried following code  
> (simplified).
>
> video_st = av_new_stream(os, 0);
> video_st->codec->codec_id = CODEC_ID_H264;
> video_st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
>

Ok. I have found that et least following parameters has to be set in codec  
struct.

video_st->codec->codec_id = CODEC_ID_H264;
video_st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
video_st->codec->time_base = (AVRational) {1, 5};
video_st->codec->width = 1600;
video_st->codec->height = 1200;

I still do not know whether it is not possible to get these parameters  
 from encoded raw stream.
I have tried the avformat_open_input() function, but it does not fill  
codec->width and height members for exapmle.

best regards
Jan

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