pads stream

Originally committed as revision 3531 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/avidec.c

@@ -270,7 +270,13 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap)
                 codec_type = CODEC_TYPE_DATA; //CODEC_TYPE_SUB ?  FIXME
                 url_fskip(pb, size - 8);
                 break;
+            case MKTAG('p', 'a', 'd', 's'):
+                codec_type = CODEC_TYPE_UNKNOWN;
+                url_fskip(pb, size - 8);
+                stream_index--;
+                break;
             default:
+                av_log(s, AV_LOG_ERROR, "unknown stream type %X\n", tag1);
                 goto fail;
             }
             break;