[Ffmpeg-devel] [PATCH] ffmpeg bug. av_seek_binary() wasnt' checking for divide-by-zero potential

[Andy Parkins]

libavformat/utils.c
 * When seeking around near the end of an MPEGTS wrapped MPEG4 stream.  I was
   getting crashes. I traced it to lavf/utils.c/av_seek_frame_binary(); which
   is calling av_rescale() even in situations that will lead to a floating point
   error.  I think the problem is that I'm seeking very small distances and
   there are probably few (or no) keyframes between the two positions (but then
   again, I don't entirely understand av_seek_frame_binary() :-))
   This patch, checks for the invalid condition (ts_max==ts_min)
   and hence allows av_seek_frame_binary()  to fall back to a linear search
   rather than just crashing.
---
 libavformat/utils.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
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