From: Nicolas George <george@nsup.org>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: Re: [FFmpeg-devel] [PATCH 04/25] fftools/ffmpeg_enc: always use video frame durations when available
Date: Mon, 24 Apr 2023 12:22:33 +0200
Message-ID: <ZEZYac6CEiaTtmqa@phare.normalesup.org> (raw)
In-Reply-To: <20230419195243.2974-4-anton@khirnov.net>
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Anton Khirnov (12023-04-19):
> Previously they would only be used with trivial filtergraphs, because
> filters did not handle frame durations. That is no longer true - most
> filters process frame durations properly (there may still be some that
> don't - this change will help finding and fixing them).
>
> Improves output video frame durations in a number of FATE tests.
I do not object to this patch nor the one to concat, but I want to state
once again:
The authoritative source of information about frame durations in
libavfilter, be it internally for the caller, is the timestamp of the
next frame, or the timestamp of EOF for the last frame.
Filtered frame durations are only a hint.
--
Nicolas George
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next prev parent reply other threads:[~2023-04-24 10:22 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-19 19:52 [FFmpeg-devel] [PATCH 01/25] fftools/ffmpeg_filter: drop write-only FilterGraph.reconfiguration Anton Khirnov
2023-04-19 19:52 ` [FFmpeg-devel] [PATCH 02/25] fftools/ffmpeg_filter: drop unused AUTO_INSERT_FILTER_INPUT() Anton Khirnov
2023-04-19 19:52 ` [FFmpeg-devel] [PATCH 03/25] lavfi/avf_concat: rescale frame durations Anton Khirnov
2023-04-19 19:52 ` [FFmpeg-devel] [PATCH 04/25] fftools/ffmpeg_enc: always use video frame durations when available Anton Khirnov
2023-04-19 20:42 ` James Almer
2023-04-19 21:12 ` Anton Khirnov
2023-04-24 10:22 ` Nicolas George [this message]
2023-04-19 19:52 ` [FFmpeg-devel] [PATCH 05/25] fftools/ffmpeg_enc: rename next_picture to frame Anton Khirnov
2023-04-19 19:52 ` [FFmpeg-devel] [PATCH 06/25] fftools/ffmpeg_enc: move handling final frames to video_sync_process() Anton Khirnov
2023-04-19 19:52 ` [FFmpeg-devel] [PATCH 07/25] fftools/ffmpeg: stop using InputStream.pts in ts_discontinuity_detect() Anton Khirnov
2023-04-19 19:52 ` [FFmpeg-devel] [PATCH 08/25] fftools/ffmpeg: stop setting InputStream.pts for streamcopy Anton Khirnov
2023-04-19 19:52 ` [FFmpeg-devel] [PATCH 09/25] fftools/ffmpeg: replace stream timebase with packet one where appropriate Anton Khirnov
2023-04-19 19:52 ` [FFmpeg-devel] [PATCH 10/25] fftools/ffmpeg_mux_init: consolidate handling -filter for audio/video Anton Khirnov
2023-04-19 19:52 ` [FFmpeg-devel] [PATCH 11/25] fftools/ffmpeg_mux_init: move check for mixing simple/complex filters Anton Khirnov
2023-04-19 19:52 ` [FFmpeg-devel] [PATCH 12/25] fftools/ffmpeg_mux_init: drop OutputStream.filters[_script] Anton Khirnov
2023-04-19 19:52 ` [FFmpeg-devel] [PATCH 13/25] fftools/ffmpeg: remove unused function arguments Anton Khirnov
2023-04-19 19:52 ` [FFmpeg-devel] [PATCH 14/25] fftools/ffmpeg_mux_init: drop useless new_stream_{data, unknown} Anton Khirnov
2023-04-19 19:52 ` [FFmpeg-devel] [PATCH 15/25] fftools/ffmpeg: reindent after previous commit Anton Khirnov
2023-04-19 19:52 ` [FFmpeg-devel] [PATCH 16/25] fftools/ffmpeg_filter: add a function for creating a filtergraph Anton Khirnov
2023-04-19 19:52 ` [FFmpeg-devel] [PATCH 17/25] fftools/ffmpeg_mux_init: drop a redundant assignment Anton Khirnov
2023-04-19 19:52 ` [FFmpeg-devel] [PATCH 18/25] fftools/ffmpeg: simplify init_output_filter() Anton Khirnov
2023-04-19 19:52 ` [FFmpeg-devel] [PATCH 19/25] fftools/ffmpeg_mux_init: rename init_output_filter() to ost_add_from_filter() Anton Khirnov
2023-04-19 19:52 ` [FFmpeg-devel] [PATCH 20/25] fftools/ffmpeg: move filtering functions to ffmpeg_filter Anton Khirnov
2023-04-19 19:52 ` [FFmpeg-devel] [PATCH 21/25] fftools/ffmpeg: move freeing a filtergraph into a separate function Anton Khirnov
2023-04-19 19:52 ` [FFmpeg-devel] [PATCH 22/25] fftools/ffmpeg_filter: reindent after previous commit Anton Khirnov
2023-04-19 19:52 ` [FFmpeg-devel] [PATCH 23/25] fftools/ffmpeg_filter: add filtergraph private data Anton Khirnov
2023-04-24 10:20 ` Nicolas George
2023-04-24 11:17 ` Anton Khirnov
2023-04-24 11:19 ` Nicolas George
2023-04-24 11:57 ` Anton Khirnov
2023-04-24 11:59 ` Nicolas George
2023-04-24 12:07 ` Anton Khirnov
2023-04-24 12:13 ` Nicolas George
2023-04-24 12:30 ` Anton Khirnov
2023-04-24 18:31 ` Nicolas George
2023-04-24 18:33 ` Paul B Mahol
2023-04-24 18:37 ` James Almer
2023-04-24 18:41 ` Paul B Mahol
2023-04-24 19:17 ` Anton Khirnov
2023-04-24 19:24 ` Nicolas George
2023-04-24 19:41 ` Anton Khirnov
2023-04-24 20:33 ` Nicolas George
2023-04-19 19:52 ` [FFmpeg-devel] [PATCH 24/25] fftools/ffmpeg: deprecate -adrift_threshold Anton Khirnov
2023-04-19 19:52 ` [FFmpeg-devel] [PATCH 25/25] fftools/ffmpeg_filter: make ifilter_parameters_from_frame() static Anton Khirnov
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