[FFmpeg-cvslog] avformat/mov: Handle when we have an mfra box but have not read the full sidx for a fragment

[Derek Buitenhuis]

ffmpeg | branch: master | Derek Buitenhuis <derek.buitenhuis at gmail.com> | Mon Mar 15 14:20:17 2021 +0000| [8f1580c31a3cfb9994bda7b3914a97e09b9f1d48] | committer: Derek Buitenhuis

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

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 at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=8f1580c31a3cfb9994bda7b3914a97e09b9f1d48
---

 libavformat/mov.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libavformat/mov.c b/libavformat/mov.c
index 23b0ead01e..97857789f4 100644
--- 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;
     }