* fill codec_id in codec_open

Originally committed as revision 1329 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/utils.c

@@ -263,6 +263,7 @@ int avcodec_open(AVCodecContext *avctx, AVCodec *codec)
     int ret;
 
     avctx->codec = codec;
+    avctx->codec_id = codec->id;
     avctx->frame_number = 0;
     if (codec->priv_data_size > 0) {
         avctx->priv_data = av_mallocz(codec->priv_data_size);