technically mp2 in pva needs AVSTREAM_PARSE_FULL

Originally committed as revision 18966 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/pva.c

@@ -55,7 +55,7 @@ static int pva_read_header(AVFormatContext *s, AVFormatParameters *ap) {
         return AVERROR(ENOMEM);
     st->codec->codec_type = CODEC_TYPE_AUDIO;
     st->codec->codec_id   = CODEC_ID_MP2;
-    st->need_parsing      = AVSTREAM_PARSE_HEADERS;
+    st->need_parsing      = AVSTREAM_PARSE_FULL;
     av_set_pts_info(st, 33, 1, 90000);
     av_add_index_entry(st, 0, 0, 0, 0, AVINDEX_KEYFRAME);