lavf/rawdec: mark raw demuxers as having no timestamps

Changes the result of the h264_redundant_pps-mov test, where the output
timebase is now 1001/24000 instead of 1/24. This is more correct, as the
source file actually is 23.98fps.

libavformat/rawdec.h

@@ -57,7 +57,7 @@ const AVInputFormat ff_ ## shortname ## _demuxer = {\
     .read_header    = ff_raw_video_read_header,\
     .read_packet    = ff_raw_read_partial_packet,\
     .extensions     = ext,\
-    .flags          = flag,\
+    .flags          = flag | AVFMT_NOTIMESTAMPS,\
     .raw_codec_id   = id,\
     .priv_data_size = sizeof(FFRawVideoDemuxerContext),\
     .priv_class     = &ff_rawvideo_demuxer_class,\

tests/ref/fate/h264_redundant_pps-mov

@@ -1,6 +1,6 @@
 ac2e8f528dae4e4d610fa3517d2c94fb *tests/data/fate/h264_redundant_pps-mov.h264
 187284 tests/data/fate/h264_redundant_pps-mov.h264
-#tb 0: 1/24
+#tb 0: 1001/24000
 #media_type 0: video
 #codec_id 0: rawvideo
 #dimensions 0: 640x360