#11455: Degradation in Closed Captions decoding
-------------------------------------+-------------------------------------
Reporter: ValeryKot | Owner: (none)
Type: defect | Status: new
Priority: normal | Component:
| undetermined
Version: git-master | Resolution:
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Description changed by ValeryKot:
Old description:
> Summary of the bug: in some cases, FFmpeg fails to extract Closed
> Captions (A/53 Part 4 format). This is a degradation: same file can be
> processed correctly with FFmpeg 4.0, but also with VLC.
> How to reproduce:
> {{{
> % ffmpeg.EXE" -f lavfi -report -i "movie=CC720p60_10sec.mp4[out+subcc]"
> -map 0:1 output_10sec.srt
> ffmpeg version N-118422-g1fbe9deee3-20250204
> built on 2025-02-04 17:56
> }}}
> Relevant error is:
>
> {{{
> [Closed Captions Decoder @ 000002f8b063dec0] Data ignored due to columns
> exceeding screen width.
> }}}
> I will (try to) attach original file, and reports and output by latest
> master and by 4.0
New description:
Summary of the bug: in some cases, FFmpeg fails to extract Closed Captions
(A/53 Part 4 format). This is a degradation: same file can be processed
correctly with FFmpeg 4.0, but also with VLC.
How to reproduce:
{{{
% ffmpeg.EXE -f lavfi -report -i "movie=CC720p60_10sec.mp4[out+subcc]"
-map 0:1 output_10sec.srt
ffmpeg version N-118422-g1fbe9deee3-20250204
built on 2025-02-04 17:56
}}}
Relevant error is:
{{{
[Closed Captions Decoder @ 000002f8b063dec0] Data ignored due to columns
exceeding screen width.
}}}
I will (try to) attach original file, and reports and output by latest
master and by 4.0
--
--
Ticket URL: <https://trac.ffmpeg.org/ticket/11455#comment:2>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
_______________________________________________
FFmpeg-trac mailing list
FFmpeg-trac@avcodec.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-trac
To unsubscribe, visit link above, or email
ffmpeg-trac-requ...@ffmpeg.org with subject "unsubscribe".
