[FFmpeg-trac] #6192(swscale:new): bus error core dump in swscale optimizations on arm
FFmpeg
trac at avcodec.org
Wed Mar 1 02:47:38 EET 2017
#6192: bus error core dump in swscale optimizations on arm
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Reporter: peterbennett | Owner:
Type: defect | Status: new
Priority: normal | Component: swscale
Version: 3.2.1 | Resolution:
Keywords: crash | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by peterbennett):
Replying to [comment:7 cehoyos]:
> Why is the line `SET_FF_NVX_TO_ALL_RGBX_FUNC(yuv420p, YUV420P,
accurate_rnd);` that is mentioned on the MythTV bug tracker not called?
This is FFMPEG code in FFmpeg/libswscale/arm/swscale_unscaled.c. I do not
know if or why it is not called when I run ffmpeg executable.
> (The console output may give an indication why the neon-optimized code
is not called.)
I will rerun it and attach the console output here.
> I suspect the work-around chosen is a very bad idea performance-wise.
Normally, I agree that it would not be advisable. However in this specific
case the program is being run once to produce a single image for a
preview, and it makes little difference if it takes some extra time.
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Ticket URL: <https://trac.ffmpeg.org/ticket/6192#comment:8>
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