[FFmpeg-devel] [PATCH] fate: add vf_overlay test for main source with alpha channel

Tobias Rapp t.rapp at noa-archive.com
Thu Jul 20 18:19:36 EEST 2017

On 20.07.2017 17:06, Peter Große wrote:
> On Wed, 19 Jul 2017 21:00:49 +0200
> Peter Große <pegro at friiks.de> wrote:
>> I was able to reproduce your checksums only after removing
>>   --disable-optimizations --disable-mmx --disable-stripping
>> from my configure command. I thought optimizations should have no
>> impact on the result?!
> After some further tests, it seems swscale (used as the auto_scaler in the
> test) produces slightly different output depending on whether MMX is enabled or
> not.
> When I re-add --disable-optimizations --enable-mmx --disable-stripping to my
> configure command line, the test succeeds.
> Any further comments to the patch and test case?

Maybe try adding -sws_flags +accurate_rnd+bitexact to CMD?


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