[gst-devel] Finding out resolution of video of input file using decodebin2?

[wl2776]

wl2776 wrote:
> 
> http://gstreamer-devel.966125.n4.nabble.com/How-can-I-get-full-information-about-a-media-file-tp1745331p1745534.html
> 

However, using FFmpeg seems to be more convenient to me.
Since gst-ffmpeg is installed, FFmpeg libraries (libavformat, libavcodec,
libavutil ) are installed also.

It is as easy as:


AVFormatContext *input;
char *filename;

// create the filename

int r=av_open_input_file(&input,filename,NULL,0,NULL);
if(!r){
  r=av_find_stream_info(input);
  if(r>=0){
// iterate all media streams in the file.
    for(int j=0;j<input->nb_streams;j++){                    
       if(input->streams[j]->codec->codec_type==CODEC_TYPE_VIDEO){
          //extract video stream properties.
       }
       if(input->streams[j]->codec->codec_type==CODEC_TYPE_AUDIO){
         // extract audio stream properties.
       }
    }
  }
  av_close_input_file(input); 
}


More details are here: http://ffmpeg.org/documentation.html
Please, see the "Public API Documentation"
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