From mboxrd@z Thu Jan 1 00:00:00 1970
Return-Path: <ffmpeg-devel-bounces@ffmpeg.org>
Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100])
by master.gitmailbox.com (Postfix) with ESMTPS id 0D2A040059
for <ffmpegdev@gitmailbox.com>; Sun, 20 Apr 2025 11:25:00 +0000 (UTC)
Received: from [127.0.1.1] (localhost [127.0.0.1])
by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 01A44687D9F;
Sun, 20 Apr 2025 14:24:57 +0300 (EEST)
Received: from mout-p-101.mailbox.org (mout-p-101.mailbox.org [80.241.56.151])
by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 09ACF687D16
for <ffmpeg-devel@ffmpeg.org>; Sun, 20 Apr 2025 14:24:51 +0300 (EEST)
Received: from smtp202.mailbox.org (smtp202.mailbox.org [10.196.197.202])
(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)
key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256)
(No client certificate requested)
by mout-p-101.mailbox.org (Postfix) with ESMTPS id 4ZgR40267yz9t6Q
for <ffmpeg-devel@ffmpeg.org>; Sun, 20 Apr 2025 13:24:48 +0200 (CEST)
Message-ID: <4607d003-bd32-4f47-9a07-fec3233eed45@gyani.pro>
Date: Sun, 20 Apr 2025 16:54:44 +0530
MIME-Version: 1.0
To: ffmpeg-devel@ffmpeg.org
References: <20250419150541.A8EF7411BF6@natalya.videolan.org>
Content-Language: en-US
From: Gyan Doshi <ffmpeg@gyani.pro>
In-Reply-To: <20250419150541.A8EF7411BF6@natalya.videolan.org>
Subject: Re: [FFmpeg-devel] [FFmpeg-cvslog] avformat/dump: Print stream
start offsets for input streams
X-BeenThere: ffmpeg-devel@ffmpeg.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: FFmpeg development discussions and patches <ffmpeg-devel.ffmpeg.org>
List-Unsubscribe: <https://ffmpeg.org/mailman/options/ffmpeg-devel>,
<mailto:ffmpeg-devel-request@ffmpeg.org?subject=unsubscribe>
List-Archive: <https://ffmpeg.org/pipermail/ffmpeg-devel>
List-Post: <mailto:ffmpeg-devel@ffmpeg.org>
List-Help: <mailto:ffmpeg-devel-request@ffmpeg.org?subject=help>
List-Subscribe: <https://ffmpeg.org/mailman/listinfo/ffmpeg-devel>,
<mailto:ffmpeg-devel-request@ffmpeg.org?subject=subscribe>
Reply-To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Content-Transfer-Encoding: 7bit
Content-Type: text/plain; charset="us-ascii"; Format="flowed"
Errors-To: ffmpeg-devel-bounces@ffmpeg.org
Sender: "ffmpeg-devel" <ffmpeg-devel-bounces@ffmpeg.org>
Archived-At: <https://master.gitmailbox.com/ffmpegdev/4607d003-bd32-4f47-9a07-fec3233eed45@gyani.pro/>
List-Archive: <https://master.gitmailbox.com/ffmpegdev/>
List-Post: <mailto:ffmpegdev@gitmailbox.com>
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=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");
>
>
> _______________________________________________
> ffmpeg-cvslog mailing list
> ffmpeg-cvslog@ffmpeg.org
> https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
>
> To unsubscribe, visit link above, or email
> ffmpeg-cvslog-request@ffmpeg.org with subject "unsubscribe".
_______________________________________________
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".