Bug#882384: ffmpeg: Gratuitous valgrind log

Carl Eugen Hoyos ceffmpeg at gmail.com
Sat Nov 25 23:52:14 UTC 2017


2017-11-25 5:41 GMT+01:00 Kingsley G. Morse Jr. <kingsley at loaner.com>:
> Hi Carl,
>
>> Nearly all messages seem to relate to melt, not FFmpeg.
>
> Thanks for your informed thoughts.
>
>> Can you reproduce any issues with ffmpeg (the executable)?
>>
>> The crc issue surprises me a little: Can you produce different
>> output files if you use the valgrind option --malloc-fill?
>
> Sure.
>
> A script is attached.
>
> It uses ffmpeg, without melt.
>
> I also attached two log files from valgrind.
>
> One ran it with --malloc-fill.

What I meant was:
If you call melt (and valgrind) twice to produce two output files
from the same melt options (but different --malloc-fill) options,
are the output files different?
If not, the valgrind warning could be a false positive.

I don't know melt but from the debug output it looks as if your
ffmpeg command does something different (missing -vcodec
huffyuv?), no?

Carl Eugen



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