Discards edit list with duration equals to 0 for video streams with only
one frame and avoid discarding covers art muxed as a single frame video
stream.
---
Hello,
The following patch discards single edit list with duration equals to 0 for
video streams with only one frame which prevents discarding covers art muxed as
a single frame video stream.
The patch can be extended to make it always discards single edit list with
duration equals to 0 (even if the video streams has more than one sample).
What do you think ?
Matthieu
---
libavformat/mov.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/libavformat/mov.c b/libavformat/mov.c
index d1b929174d..88ffd0e5f2 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -2988,6 +2988,17 @@ static void mov_fix_index(MOVContext *mov, AVStream *st)
if (!msc->elst_data || msc->elst_count <= 0 || nb_old <= 0) {
return;
}
+
+ // Discard edit list with duration equals to 0 for video streams with only
+ // one frame and avoid discarding covers art muxed as a single frame video
+ // stream
+ if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
+ msc->chunk_count == 1 &&
+ msc->elst_count == 1 &&
+ msc->elst_data[0].duration == 0) {
+ return;
+ }
+
// Clean AVStream from traces of old index
st->index_entries = NULL;
st->index_entries_allocated_size = 0;
--
2.11.0
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