avformat/mov: Handle when we have an mfra box but have not read the full sidx for...

Use the tfra timestamp if it is available and sidx timestamp is not.

Fixes reading the entire file after seeking in a live-style DASH FMP4
with an MFRA.

This specifically fixes when use_mfra_for is set.

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

diff --git a/libavformat/mov.c b/libavformat/mov.c
index 23b0ead01ed49c74ba151bb5961009ec7f7d00f6..97857789f49f3087cfd2beae8a65d6d3e5938a6a 100644 (file)
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -1279,6 +1279,10 @@ static int64_t get_frag_time(MOVFragmentIndex *frag_index,
 
     if (track_id >= 0) {
         frag_stream_info = get_frag_stream_info(frag_index, index, track_id);
+        if (frag_stream_info->sidx_pts != AV_NOPTS_VALUE)
+            return frag_stream_info->sidx_pts;
+        if (frag_stream_info->first_tfra_pts != AV_NOPTS_VALUE)
+            return frag_stream_info->first_tfra_pts;
         return frag_stream_info->sidx_pts;
     }