remove obsolete requirements, quicktime 6 is from 2002, not sure if muxing scheme still fits

Originally committed as revision 13732 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/movenc.c

@@ -1179,22 +1179,12 @@ static int mov_write_meta_tag(ByteIOContext *pb, MOVContext *mov,
 static int mov_write_udta_tag(ByteIOContext *pb, MOVContext *mov,
                               AVFormatContext *s)
 {
-    int i, req = 0;
-
-    /* Requirements */
-    for (i=0; i<mov->nb_streams; i++) {
-        if(mov->tracks[i].entry <= 0) continue;
-        if (mov->tracks[i].enc->codec_id == CODEC_ID_AAC ||
-            mov->tracks[i].enc->codec_id == CODEC_ID_MPEG4) {
-            req = 1;
-            break;
-        }
-    }
+    int i;
 
     if (s->title[0]   || s->author[0] || s->album[0] || s->year ||
         s->comment[0] || s->genre[0]  || s->track ||
        (mov->mode == MODE_MOV &&
-      ((mov->tracks[0].enc && !mov->tracks[0].enc->flags & CODEC_FLAG_BITEXACT) || req))) {
+         (mov->tracks[0].enc && !mov->tracks[0].enc->flags & CODEC_FLAG_BITEXACT))) {
         offset_t pos = url_ftell(pb);
 
         put_be32(pb, 0); /* size */
@@ -1204,10 +1194,6 @@ static int mov_write_udta_tag(ByteIOContext *pb, MOVContext *mov,
         mov_write_meta_tag(pb, mov, s);
 
         if(mov->mode == MODE_MOV){ // the title field breaks gtkpod with mp4 and my suspicion is that stuff is not valid in mp4
-            /* Requirements */
-            if (req)
-                mov_write_string_tag(pb, "\251req", "QuickTime 6.0 or greater", 0);
-
             mov_write_string_tag(pb, "\251nam", s->title         , 0);
             mov_write_string_tag(pb, "\251aut", s->author        , 0);
             mov_write_string_tag(pb, "\251alb", s->album         , 0);

tests/libav.regression.ref

@@ -21,8 +21,8 @@ bbdd9a4904eceb530b1a9ae02c48d76f *./tests/data/b-libav.ffm
 f8ad5bd78f4d012a8ce9570aa395ac54 *./tests/data/b-libav.flv
 335833 ./tests/data/b-libav.flv
 ./tests/data/b-libav.flv CRC=0xe14e8847
-16518706f425cb537362bfc1c58b8de5 *./tests/data/b-libav.mov
-366923 ./tests/data/b-libav.mov
+af78858062599fcbba049e4a02588a15 *./tests/data/b-libav.mov
+366879 ./tests/data/b-libav.mov
 ./tests/data/b-libav.mov CRC=0x45079dca
 7820fa85ab86c62028d8dbda94589573 *./tests/data/b-libav.dv
 3600000 ./tests/data/b-libav.dv