Support decoding "m1v " mpeg1video in mov.

Fixes ticket #579 at least for ffplay.

libavformat/isom.c

@@ -154,6 +154,7 @@ const AVCodecTag codec_movvideo_tags[] = {
 
     { CODEC_ID_MPEG1VIDEO, MKTAG('m', '1', 'v', '1') }, /* Apple MPEG-1 Camcorder */
     { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'e', 'g') }, /* MPEG */
+    { CODEC_ID_MPEG1VIDEO, MKTAG('m', '1', 'v', ' ') },
     { CODEC_ID_MPEG2VIDEO, MKTAG('m', '2', 'v', '1') }, /* Apple MPEG-2 Camcorder */
     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '1') }, /* MPEG2 HDV 720p30 */
     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '2') }, /* MPEG2 HDV 1080i60 */

libavformat/mov.c

@@ -1378,6 +1378,9 @@ int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
     case CODEC_ID_AC3:
         st->need_parsing = AVSTREAM_PARSE_FULL;
         break;
+    case CODEC_ID_MPEG1VIDEO:
+        st->need_parsing = AVSTREAM_PARSE_FULL;
+        break;
     default:
         break;
     }