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Code Issues Releases Activity

avcodec/mpeg12enc: Fix writing closed captions

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Broken in 6e225123d8, because
ff_copy_bits() expects the amount of bits, not bytes to write.
And because it relies on the buffer to be padded, using
side_data->size * 8 is not possible. So partially revert
said commit.

Fixes ticket #11591.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt
2025-05-16 03:03:58 +02:00
parent 79e2a845cd
commit 45daaf2caa
1 changed files with 2 additions and 1 deletions
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3
libavcodec/mpeg12enc.c
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@ -472,7 +472,8 @@ static int mpeg1_encode_picture_header(MPVMainEncContext *const m)
(side_data->size / 3 & A53_MAX_CC_COUNT) | 0x40); // flags, cc_count (side_data->size / 3 & A53_MAX_CC_COUNT) | 0x40); // flags, cc_count
put_bits(&s->pb, 8, 0xff); // em_data put_bits(&s->pb, 8, 0xff); // em_data
ff_copy_bits(&s->pb, side_data->data, side_data->size); for (int i = 0; i < side_data->size; i++)
put_bits(&s->pb, 8, side_data->data[i]);
put_bits(&s->pb, 8, 0xff); // marker_bits put_bits(&s->pb, 8, 0xff); // marker_bits
} else { } else {