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Code Issues Releases Activity

avformat/hlsenc: fix CODECS attribute of H.264

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1. Add avcc extradata support.
2. Add non-standard annexb support with 0 0 1 as prefix for SPS.

Reviewed-by: Limin Wang <lance.lmwang@gmail.com>
Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
This commit is contained in:
Zhao Zhili 2023-06-08 10:45:56 +08:00
parent 09621fd7d9
commit 1460acc2ac
1 changed files with 12 additions and 2 deletions
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14
libavformat/hlsenc.c
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@ -355,9 +355,19 @@ static void write_codec_attr(AVStream *st, VariantStream *vs)
if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
uint8_t *data = st->codecpar->extradata;
if (data && (data[0] | data[1] | data[2]) == 0 && data[3] == 1 && (data[4] & 0x1F) == 7) {
if (data) {
const uint8_t *p;
if (AV_RB32(data) == 0x01 && (data[4] & 0x1F) == 7)
p = &data[5];
else if (AV_RB24(data) == 0x01 && (data[3] & 0x1F) == 7)
p = &data[4];
else if (data[0] == 0x01) /* avcC */
p = &data[1];
else
goto fail;
snprintf(attr, sizeof(attr),
"avc1.%02x%02x%02x", data[5], data[6], data[7]);
"avc1.%02x%02x%02x", p[0], p[1], p[2]);
} else {
goto fail;
}