[FFmpeg-devel] [PATCH 1/1] libavformat/flvenc.c: avoid 24bit timestamp truncation for FLV metadata

[asilvestre]

FLV AMF tags have a 24bit field for timestamps plus an 8bit for extended
timestamps.

All FLV AMF tags except when we write metadata handle this correctly
using the put_timestamp function.

Until now when writing metadata we were only using the first
24 bits and thus the timestamp value was wraping around 4 hours 40
minutes (16,800,000 ms, max 24 bit value 16,777,216) of playback.

This commit fixes this applying this same function put_timestamp
for the metadata FLV tag.
---
 libavformat/flvenc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libavformat/flvenc.c b/libavformat/flvenc.c
index 3f24c7e192..70fc977bfb 100644
--- a/libavformat/flvenc.c
+++ b/libavformat/flvenc.c
@@ -284,8 +284,8 @@ static void write_metadata(AVFormatContext *s, unsigned int ts)
     avio_w8(pb, FLV_TAG_TYPE_META);            // tag type META
     flv->metadata_size_pos = avio_tell(pb);
     avio_wb24(pb, 0);           // size of data part (sum of all parts below)
-    avio_wb24(pb, ts);          // timestamp
-    avio_wb32(pb, 0);           // reserved
+    put_timestamp(pb, ts);      // timestamp
+    avio_wb24(pb, 0);           // reserved
 
     /* now data of data_size size */
 
-- 
2.32.0