[FFmpeg-devel] [PATCH] fate: add tests for some video source filters

Michael Niedermayer michael at niedermayer.cc
Fri Jul 21 14:16:45 EEST 2017

On Fri, Jul 21, 2017 at 12:18:53PM +0200, Tobias Rapp wrote:
> On 21.07.2017 02:47, Michael Niedermayer wrote:
> >On Fri, Jul 21, 2017 at 01:04:03AM +0200, Nicolas George wrote:
> >>Le duodi 2 thermidor, an CCXXV, Michael Niedermayer a écrit :
> >>>breaks on mips (probably big endian issue)
> >>
> >>Breaks on MIPS, or detects that something is already broken in MIPS and
> >>nobody noticed until now?
> >
> >this patch breaks the selftests on mips or maybe more precissely
> >it adds a test which fails
> >
> >
> >>
> >>Could you perhaps re-run the test with V=1, then re-run the command line
> >>with -f png, to see how the output is broken?
> >
> >Stream #0:0: Video: rawvideo ([12][0]3Y / 0x5933000C), yuv444p12be, 320x240 [SAR 1:1 DAR 4:3], q=2-31, 13824 kb/s, 5 fps, 5 tbn, 5 tbc (default)
> >
> >the format used seems the native one that has different endianness
> >and thus different checksums
> >
> >md5sum out.png mips/out.png
> >012e1906fe84ee6f757ef3f1473cc26d  out.png
> >012e1906fe84ee6f757ef3f1473cc26d  mips/out.png
> >
> >i tried forcing le but it alone didnt give the same result
> >ive to sleep now so i cant look further into this today
> >but iam happy to test patches tomorrow, also iam just testing with
> >mips qemu not real hw so if it wasnt for the one time work to set
> >build env up and qemu than it would be rather easy for anyone to test
> I tested the opposite direction by forcing yuv444p12be on x86-64 and
> got different frame-CRCs "0xda6a937e" compared to the MIPS-CRCs you
> posted earlier "0xba079be7". Not sure what is happening ...

mybe the le<->be
is the BE output you get identical to LE ? (besides the endianness)


Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Complexity theory is the science of finding the exact solution to an
approximation. Benchmarking OTOH is finding an approximation of the exact
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