From: "softworkz ." <softworkz-at-hotmail.com@ffmpeg.org>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: Re: [FFmpeg-devel] [FFmpeg-cvslog] avformat/dump: Print stream start offsets for input streams
Date: Sun, 20 Apr 2025 20:07:14 +0000
Message-ID: <DM8P223MB036529041AE8C07479C6C7CFBAB92@DM8P223MB0365.NAMP223.PROD.OUTLOOK.COM> (raw)
In-Reply-To: <4607d003-bd32-4f47-9a07-fec3233eed45@gyani.pro>
> -----Original Message-----
> From: ffmpeg-devel <ffmpeg-devel-bounces@ffmpeg.org> On Behalf Of Gyan
> Doshi
> Sent: Sonntag, 20. April 2025 13:25
> To: ffmpeg-devel@ffmpeg.org
> Subject: Re: [FFmpeg-devel] [FFmpeg-cvslog] avformat/dump: Print
> stream start offsets for input streams
>
>
>
> On 2025-04-19 08:35 pm, softworkz wrote:
> > ffmpeg | branch: master | softworkz <softworkz@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 <softworkz@hotmail.com>
> >
> >>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=02d7384ed5ee
> c0152056c081b536c16cb86e6361
> > ---
> >
> > 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
>
Yup, that makes sense. New patch coming.
Thank you,
sw
_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
To unsubscribe, visit link above, or email
ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".
prev parent reply other threads:[~2025-04-20 20:07 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20250419150541.A8EF7411BF6@natalya.videolan.org>
2025-04-20 11:24 ` Gyan Doshi
2025-04-20 20:07 ` softworkz . [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=DM8P223MB036529041AE8C07479C6C7CFBAB92@DM8P223MB0365.NAMP223.PROD.OUTLOOK.COM \
--to=softworkz-at-hotmail.com@ffmpeg.org \
--cc=ffmpeg-devel@ffmpeg.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Git Inbox Mirror of the ffmpeg-devel mailing list - see https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
This inbox may be cloned and mirrored by anyone:
git clone --mirror https://master.gitmailbox.com/ffmpegdev/0 ffmpegdev/git/0.git
# If you have public-inbox 1.1+ installed, you may
# initialize and index your mirror using the following commands:
public-inbox-init -V2 ffmpegdev ffmpegdev/ https://master.gitmailbox.com/ffmpegdev \
ffmpegdev@gitmailbox.com
public-inbox-index ffmpegdev
Example config snippet for mirrors.
AGPL code for this site: git clone https://public-inbox.org/public-inbox.git