Opened 3 years ago

Last modified 3 years ago

#9117 new defect

libx265 sgefault error while encoding

Reported by: Arno BERND Owned by:
Priority: normal Component: undetermined
Version: unspecified Keywords: libx265
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no


Summary of the bug: Unpredictable segault errors when trying to encode multiple videos with libx265.
How to reproduce:

Just use about 6 parallel running commands
% ffmpeg -loglevel quiet -y -i <file_mp4> -vcodec libx265 -x265-params log-level=-1 <file2_mp4> 
ffmpeg version 4.3.1
built on SUSE Linux with gcc 10

Patches should be submitted to the ffmpeg-devel mailing list and not this bug tracker.

Attachments (1)

segfaults.txt (1.7 KB ) - added by Arno BERND 3 years ago.
output from dmesg when error occurs

Download all attachments as: .zip

Change History (2)

by Arno BERND, 3 years ago

Attachment: segfaults.txt added

output from dmesg when error occurs

in reply to:  description comment:1 by Carl Eugen Hoyos, 3 years ago

Component: ffmpegundetermined
Keywords: ffmpeg encoder removed

Replying to babu59:

Unpredictable segault errors

This usually does not indicate a bug that can be fixed in software.

To make this a valid ticket, please test current FFmpeg git head and provide backtrace, disassembly and register dump as explained on

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