On 2025-04-19 08:35 pm, softworkz wrote:
ffmpeg | branch: master | softworkz <softwo...@hotmail.com> | Sat Feb 23
04:59:10 2019 +0100| [02d7384ed5eec0152056c081b536c16cb86e6361] | committer: softworkz
avformat/dump: Print stream start offsets for input streams
Seeing the offset of video and audio streams to each other is often
a useful metric in diagnosing and understanding issues with playback
or transcoding.
This commit adds those offsets to the stream info print.
Signed-off-by: softworkz <softwo...@hotmail.com>
http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=02d7384ed5eec0152056c081b536c16cb86e6361
---
libavformat/dump.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/libavformat/dump.c b/libavformat/dump.c
index 3d37623a41..8c7db7b275 100644
--- a/libavformat/dump.c
+++ b/libavformat/dump.c
@@ -678,6 +678,11 @@ FF_ENABLE_DEPRECATION_WARNINGS
print_fps(1 / av_q2d(st->time_base), "tbn", log_level);
}
+ if (st->start_time != AV_NOPTS_VALUE && st->start_time != 0 && st->time_base.den && st->time_base.num) {
+ const double stream_start = av_q2d(st->time_base) * st->start_time;
+ av_log(NULL, AV_LOG_INFO, ", Start-Time %.3fs", stream_start);
This should use the same precision as the other timestamp printouts, to
avoid subtle inaccuracies.
For a single-stream MPEG-TS , ffmpeg prints "start: 1.466667" for the
format and "Start-Time 1.467s" for the stream.
Regards,
Gyan
+ }
+
dump_disposition(st->disposition, log_level);
av_log(NULL, log_level, "\n");
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