[FFmpeg-devel] [PATCH] segfault in rtp_parse_open() for MPEG TS streams

Luca Abeni lucabe72
Thu Aug 21 16:06:55 CEST 2008

Hi Arnoud,

Arnoud Zwemmer wrote:
> Hi,
> Revision 14045 of libavformat/rtpdec.c introduces a segmentation fault 
> for MPEG-2 TS streams that get demuxed inside the rtp demux. Comment in 
> code above rtp_parse_open() explicitly states that (AVStream *) st can 
> be NULL, which now causes av_set_pts_info(s->st, 32, 1, 90000); to 
> segfault on the NULL ptr.

Sorry about that problem... I've never been able to test the "TS in RTP"
case; is it possible to reproduce this segfault by using the "ffmpeg"
program? If yes, how?

Your patch surely fixes the problem, but maybe there is a simpler solution:
for example, it seems to me that "st == NULL" is equivalent to
"!strcmp(ff_rtp_enc_name(payload_type), "MP2T")"

Does the attached patch work for you?

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