[FFmpeg-devel] [PATCH 1/4] dnxhddec: implement slice multithreading

Christophe Gisquet christophe.gisquet at gmail.com
Sat Sep 26 08:33:26 CEST 2015


2015-09-26 1:52 GMT+02:00 Michael Niedermayer <michaelni at gmx.at>:
> This segfaults with http://samples.ffmpeg.org/ffmpeg-bugs/trac/ticket2125/DNxHDtest2.mov

Can't reproduce with frame or slice threading or no threading. What
was the command-line?

> #3  0x0000000000af53fd in avcodec_default_execute2 (c=0x1ce34e0, func=0x7470e6
> #6  0x0000000000a3bc76 in frame_worker_thread (arg=0x1ce2198) at libavcodec/pthread_frame.c:154

Indicates maybe frame+slice, but that brings me to the point: why is
it crashing at all? Is it something that should be avoidable through
my code?

It seems I should just avoid running the slice-threading code in the
frame threading case.


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