#11455: Degradation in Closed Captions decoding
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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 |
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Comment (by Marth64):
Your sample has actual text on field 1 (odd) instead of field 2. But field
2 is transmitting bits before field 1, the CC decoder is choosing it as
the default field to decode. This command works for your sample:
{{{
ffmpeg -data_field first -f lavfi -i "movie=CC720p60_10sec.mp4[out+subcc]"
-map 0:1 output_10sec.srt
}}}
This is similar to #11263
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Ticket URL: <https://trac.ffmpeg.org/ticket/11455#comment:3>
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