From: Lingjiang Fang <vacingfang@foxmail.com>
To: ffmpeg-devel@ffmpeg.org
Cc: Lingjiang Fang <vacingfang@foxmail.com>
Subject: [FFmpeg-devel] [PATCH] lavc: fix h264 parser bug
Date: Fri, 13 May 2022 00:22:02 +0800
Message-ID: <tencent_1A5A746EF0F810A9AFC4A3D70231D4069009@qq.com> (raw)
will give a wrong nalu length(+1) when next nalu start with 00000001
this bug will lead to an padding zero to pps in AVC Sequence header(flv) or in avc1(mpr)
---
libavcodec/h2645_parse.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/libavcodec/h2645_parse.c b/libavcodec/h2645_parse.c
index 03780680c6..2e941a2bd0 100644
--- a/libavcodec/h2645_parse.c
+++ b/libavcodec/h2645_parse.c
@@ -134,6 +134,10 @@ int ff_h2645_extract_rbsp(const uint8_t *src, int length,
dst[di++] = src[si++];
nsc:
+ if (src[si-1] == 0) {
+ --di;
+ --si;
+ }
memset(dst + di, 0, AV_INPUT_BUFFER_PADDING_SIZE);
nal->data = dst;
--
2.29.2
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next reply other threads:[~2022-05-12 16:22 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-12 16:22 Lingjiang Fang [this message]
2022-05-16 10:37 ` Lingjiang Fang
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