[FFmpeg-cvslog] avformat/rtpdec_h261: Fix sanity checks
ThomasVolkert
git at videolan.org
Tue Aug 26 20:39:01 CEST 2014
ffmpeg | branch: master | ThomasVolkert <thomas at homer-conferencing.com> | Tue Aug 26 14:23:00 2014 +0200| [e15824e75b5549e53eb5c1ffb79766321ac8d122] | committer: Michael Niedermayer
avformat/rtpdec_h261: Fix sanity checks
Fixes mbap and quant
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=e15824e75b5549e53eb5c1ffb79766321ac8d122
---
libavformat/rtpdec_h261.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/libavformat/rtpdec_h261.c b/libavformat/rtpdec_h261.c
index c1d79a8..b902d2a 100644
--- a/libavformat/rtpdec_h261.c
+++ b/libavformat/rtpdec_h261.c
@@ -117,8 +117,8 @@ int ff_h261_handle_packet(AVFormatContext *ctx, PayloadContext *data,
sbit = (buf[0] >> 5) & 0x07;
ebit = (buf[0] >> 2) & 0x07;
gobn = (buf[1] >> 4) & 0x0f;
- mbap = ((buf[1] << 1) & 0x1e) | ((buf[1] >> 7) & 0x01);
- quant = (buf[1] >> 4) & 0x0f;
+ mbap = ((buf[1] << 1) & 0x1e) | ((buf[2] >> 7) & 0x01);
+ quant = (buf[2] >> 2) & 0x1f;
/* pass the H.261 payload header and continue with the actual payload */
buf += RTP_H261_PAYLOAD_HEADER_SIZE;
More information about the ffmpeg-cvslog
mailing list