From: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
To: ffmpeg-devel@ffmpeg.org
Subject: Re: [FFmpeg-devel] [PATCH 0/5] Properly handle CEA-708 caption data when transcoding
Date: Thu, 30 Mar 2023 02:46:32 +0200
Message-ID: <GV1P250MB07371EC2DB9E3E5D1590A7CA8F8E9@GV1P250MB0737.EURP250.PROD.OUTLOOK.COM> (raw)
In-Reply-To: <20230327164704.12962-1-dheitmueller@ltnglobal.com>
Devin Heitmueller:
> This patch series is intended to address long-standing known issues where
> CEA-708 caption data is either duplicated or corrupted (i.e. 50% of the data
> is lost). We employ an intermediate queue, which is available to filters that
> change the frame rate of the video, which stashes the 608/708 data and
> reconstructs properly formed 708 tuples on the output side (injecting
> appropriate padding as needed).
>
> The common functions are implemented in libavutil, but I am open to
> suggestions. While all the users in this patch series are within
> libavfilter, there are use cases where this functionality would
> be useful within libavformat (which is why libavutil was chosen).
>
If it is not used now outside of lavfi, it should be in lavfi to allow
to change it when it turns out that changes are needed.
- Andreas
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next prev parent reply other threads:[~2023-03-30 0:46 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-27 16:46 Devin Heitmueller
2023-03-27 16:47 ` [FFmpeg-devel] [PATCH 1/5] ccfifo: Properly handle CEA-708 captions through framerate conversion Devin Heitmueller
2023-03-27 16:47 ` [FFmpeg-devel] [PATCH 2/5] vf_fps: properly preserve CEA-708 captions Devin Heitmueller
2023-03-27 16:47 ` [FFmpeg-devel] [PATCH 3/5] yadif: Properly preserve CEA-708 closed captions Devin Heitmueller
2023-03-27 16:47 ` [FFmpeg-devel] [PATCH 4/5] tinterlace: " Devin Heitmueller
2023-03-27 16:47 ` [FFmpeg-devel] [PATCH 5/5] vf_ccrepack: Add new filter to repack CEA-708 side data Devin Heitmueller
2023-03-30 0:46 ` Andreas Rheinhardt [this message]
2023-03-30 13:14 ` [FFmpeg-devel] [PATCH 0/5] Properly handle CEA-708 caption data when transcoding Devin Heitmueller
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