#11263: [Regression] Closed Captions in MPEG-TS no more recognized
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Reporter: Selcuk Ozturk | Owner: (none)
Type: defect | Status: closed
Priority: normal | Component: avcodec
Version: git-master | Resolution: fixed
Keywords: mpegts | Blocked By:
Blocking: | Reproduced by developer: 1
Analyzed by developer: 1 |
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Changes (by Marth64):
* analyzed: 0 => 1
* resolution: => fixed
* status: new => closed
Comment:
In "bbd0be04d0 avcodec/ccaption_dec: allow selection of second field
captions",the ability was added to decode field 1/2 separately
Your sample likely has a field 2 with padding or junk bytes, and as such
the auto selection is choosing field 2. I haven't dug into the hex yet but
this is likely to be the cause.
Anyways, this works:
{{{
ffmpeg -data_field first -c:s:1 ccaption_dec -f lavfi -i
"movie=11263.ts[out+subcc]" -map 0:s -c:s ass -f ass -
}}}
Not a bug IMO, its working as designed within FFmpeg's Closed Captions
limits. Will close ticket, please let me know if we need to re-open.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/11263#comment:12>
FFmpeg <https://ffmpeg.org>
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