* Re: [FFmpeg-devel] [FFmpeg-cvslog] swscale: use 16-bit intermediate precision for RGB/XYZ conversion [not found] <20241226193325.288834126EE@natalya.videolan.org> @ 2025-01-26 18:26 ` Michael Niedermayer 2025-03-13 23:54 ` Michael Niedermayer 0 siblings, 1 reply; 5+ messages in thread From: Michael Niedermayer @ 2025-01-26 18:26 UTC (permalink / raw) To: ffmpeg-devel [-- Attachment #1.1: Type: text/plain, Size: 5856 bytes --] On Thu, Dec 26, 2024 at 07:33:23PM +0000, Niklas Haas wrote: > ffmpeg | branch: master | Niklas Haas <git@haasn.dev> | Mon Dec 16 14:49:39 2024 +0100| [af6d52eec66961f6a502b0f2f390c12226d087cd] | committer: Niklas Haas > > swscale: use 16-bit intermediate precision for RGB/XYZ conversion > > The current logic uses 12-bit linear light math, which is woefully insufficient > and leads to nasty postarization artifacts. This patch simply switches the > internal logic to 16-bit precision. > > This raises the memory requirement of these tables from 32 kB to 272 kB. > > All relevant FATE tests updated for improved accuracy. > > Fixes: #4829 > Signed-off-by: Niklas Haas <git@haasn.dev> > Sponsored-by: Sovereign Tech Fund > > > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=af6d52eec66961f6a502b0f2f390c12226d087cd > --- this breaks on x86-32 grep Err fatetest make: *** [src/tests/Makefile:310: fate-filter-pixdesc-xyz12le] Error 1 make: *** [src/tests/Makefile:311: fate-filter-pixdesc-xyz12be] Error 1 make: *** [src/tests/Makefile:310: fate-pixfmt-xyz12le] Error 1 make: *** [src/tests/Makefile:311: fate-filter-pixfmts-fieldorder] Error 1 make: *** [src/tests/Makefile:310: fate-filter-pixfmts-crop] Error 1 make: *** [src/tests/Makefile:311: fate-filter-pixfmts-transpose] Error 1 make: *** [src/tests/Makefile:311: fate-filter-pixfmts-field] Error 1 make: *** [src/tests/Makefile:311: fate-filter-pixfmts-copy] Error 1 make: *** [src/tests/Makefile:310: fate-filter-pixfmts-hflip] Error 1 make: *** [src/tests/Makefile:311: fate-filter-pixfmts-il] Error 1 make: *** [src/tests/Makefile:311: fate-filter-pixfmts-null] Error 1 make: *** [src/tests/Makefile:311: fate-filter-pixfmts-vflip] Error 1 make: *** [src/tests/Makefile:311: fate-filter-pixfmts-scale] Error 1 examples: --- src/tests/ref/fate/filter-pixfmts-copy 2025-01-26 19:13:18.982388050 +0100 +++ tests/data/fate/filter-pixfmts-copy 2025-01-26 19:14:39.267034804 +0100 @@ -111,8 +111,8 @@ xv36le e08dcbde02f1c28a3554f372ad1278e2 xv48be ce34993b4b4411bba1d852b9b86aa39e xv48le df913a7e61b162aa98303e5393e60c63 -xyz12be f257f86373207af8aed0a1a05171df3b -xyz12le 7922f99edc44a2c26a25becbea9914cc +xyz12be d4562ab725e3ab7e5573dd03218bb03c +xyz12le ce17d867c3fea4c42324e40353b72de4 y210le 04e9487b6cce38e7531437e946cdd586 y212le 825768be8fe92708ae80be84855066ed y216le 0e99aeddfee304e72d525d72998d9e9b --- src/tests/ref/fate/filter-pixfmts-hflip 2025-01-26 19:13:18.982388050 +0100 +++ tests/data/fate/filter-pixfmts-hflip 2025-01-26 19:14:39.275034869 +0100 @@ -108,8 +108,8 @@ xv36le e478b4b54698beb3ce1b9a2dd691d544 xv48be e030a2c7b1b600cfacb691b6e90c2e3d xv48le fbd7f8c65cd6fc9f9108dc9a1f977dc3 -xyz12be 3c50a51a3c486a0c6853e4bbbcf3f244 -xyz12le e020897d826ea20ded16f30ea1eb018d +xyz12be c678c7f19c610063f352a0253121441f +xyz12le 2320702cb1c8ccaad27d7004d4f3a195 ya16be 70fa41c32ecaf3370edc38add6096db2 ya16le 3b2c20f9e80717628ced6c6468507f63 ya8 4ad5920716de3d2fbbc49f95adb60345 Test filter-pixfmts-copy failed. Look at tests/data/fate/filter-pixfmts-copy.err for details. make: *** [src/tests/Makefile:311: fate-filter-pixfmts-copy] Error 1 Test filter-pixfmts-hflip failed. Look at tests/data/fate/filter-pixfmts-hflip.err for details. make: *** [src/tests/Makefile:310: fate-filter-pixfmts-hflip] Error 1 TEST vsynth2-mov-bgr24 TEST vsynth2-mov-bpp15 --- src/tests/ref/fate/filter-pixfmts-il 2025-01-26 19:13:18.982388050 +0100 +++ tests/data/fate/filter-pixfmts-il 2025-01-26 19:14:39.315035190 +0100 @@ -110,8 +110,8 @@ xv36le 102c0e817d375ddd6b2cfbb4262dec95 xv48be 4d7376651fb7b3e84d00abad6c785aad xv48le a1a8ff16d9a864568e5e557734bf3d6d -xyz12be b7d50e283360bf69fd661369110b26ef -xyz12le d5b1d45c3a136bb3d04f70a619c86c8d +xyz12be 3d9ae42c65eb645bb8e99dc708716f2d +xyz12le b27ec91dcff02d2b94b17c136be55001 y210le d4cf9b53cd7ff22f087743d483e88480 y212le d5a2b4677ddb4a3bc3e5cd5cbb20f426 y216le 9e44c6d76b09bcbe71738423b4b3d67a Test filter-pixfmts-il failed. Look at tests/data/fate/filter-pixfmts-il.err for details. make: *** [src/tests/Makefile:311: fate-filter-pixfmts-il] Error 1 TEST vsynth2-mov-bpp16 TEST vsynth2-roqvideo TEST vsynth2-rpza TEST vsynth2-smc --- src/tests/ref/fate/filter-pixfmts-null 2025-01-26 19:13:18.982388050 +0100 +++ tests/data/fate/filter-pixfmts-null 2025-01-26 19:14:39.451036285 +0100 @@ -111,8 +111,8 @@ xv36le e08dcbde02f1c28a3554f372ad1278e2 xv48be ce34993b4b4411bba1d852b9b86aa39e xv48le df913a7e61b162aa98303e5393e60c63 -xyz12be f257f86373207af8aed0a1a05171df3b -xyz12le 7922f99edc44a2c26a25becbea9914cc +xyz12be d4562ab725e3ab7e5573dd03218bb03c +xyz12le ce17d867c3fea4c42324e40353b72de4 y210le 04e9487b6cce38e7531437e946cdd586 y212le 825768be8fe92708ae80be84855066ed y216le 0e99aeddfee304e72d525d72998d9e9b TEST vsynth2-snow TEST vsynth2-snow-hpel Test filter-pixfmts-null failed. Look at tests/data/fate/filter-pixfmts-null.err for details. make: *** [src/tests/Makefile:311: fate-filter-pixfmts-null] Error 1 [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB The difference between a dictatorship and a democracy is that every 4 years the population together is allowed to provide 1 bit of input to the government. [-- Attachment #1.2: signature.asc --] [-- Type: application/pgp-signature, Size: 195 bytes --] [-- Attachment #2: Type: text/plain, Size: 251 bytes --] _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe". ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [FFmpeg-devel] [FFmpeg-cvslog] swscale: use 16-bit intermediate precision for RGB/XYZ conversion 2025-01-26 18:26 ` [FFmpeg-devel] [FFmpeg-cvslog] swscale: use 16-bit intermediate precision for RGB/XYZ conversion Michael Niedermayer @ 2025-03-13 23:54 ` Michael Niedermayer 2025-03-13 23:58 ` Michael Niedermayer 2025-03-14 0:09 ` Niklas Haas 0 siblings, 2 replies; 5+ messages in thread From: Michael Niedermayer @ 2025-03-13 23:54 UTC (permalink / raw) To: ffmpeg-devel, Niklas Haas [-- Attachment #1.1: Type: text/plain, Size: 2620 bytes --] Hi On Sun, Jan 26, 2025 at 07:26:59PM +0100, Michael Niedermayer wrote: > On Thu, Dec 26, 2024 at 07:33:23PM +0000, Niklas Haas wrote: > > ffmpeg | branch: master | Niklas Haas <git@haasn.dev> | Mon Dec 16 14:49:39 2024 +0100| [af6d52eec66961f6a502b0f2f390c12226d087cd] | committer: Niklas Haas > > > > swscale: use 16-bit intermediate precision for RGB/XYZ conversion > > > > The current logic uses 12-bit linear light math, which is woefully insufficient > > and leads to nasty postarization artifacts. This patch simply switches the > > internal logic to 16-bit precision. > > > > This raises the memory requirement of these tables from 32 kB to 272 kB. > > > > All relevant FATE tests updated for improved accuracy. > > > > Fixes: #4829 > > Signed-off-by: Niklas Haas <git@haasn.dev> > > Sponsored-by: Sovereign Tech Fund > > > > > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=af6d52eec66961f6a502b0f2f390c12226d087cd > > --- > > this breaks on x86-32 ping the fate tests for a major architecture are broken since this This impacts future bisections over that range for example you can trivially test this on x86-64 with something like: --cross-prefix=/usr/i686-linux-gnu/bin/ --cc='ccache i686-linux-gnu-gcc-7' --arch=x86_32 --target-os=linux --enable-cross-compile if you have the correponding packages installed before af6d52eec66961f6a502b0f2f390c12226d087cd TEST filter-pixdesc-xyz12be after af6d52eec66961f6a502b0f2f390c12226d087cd: --- src/tests/ref/fate/filter-pixdesc-xyz12be 2025-03-14 00:46:40.445681223 +0100 +++ tests/data/fate/filter-pixdesc-xyz12be 2025-03-14 00:47:08.301903796 +0100 @@ -1 +1 @@ -pixdesc-xyz12be 1508a33dea936c45d9ee13f7743af00d +pixdesc-xyz12be 198f43f452bc55f4ca1e0e0171de5c4c Test filter-pixdesc-xyz12be failed. Look at tests/data/fate/filter-pixdesc-xyz12be.err for details. make: *** [src/tests/Makefile:311: fate-filter-pixdesc-xyz12be] Error 1 in master: --- src/tests/ref/fate/filter-pixdesc-xyz12be 2025-03-14 00:46:40.445681223 +0100 +++ tests/data/fate/filter-pixdesc-xyz12be 2025-03-14 00:48:43.042660972 +0100 @@ -1 +1 @@ -pixdesc-xyz12be 1508a33dea936c45d9ee13f7743af00d +pixdesc-xyz12be 198f43f452bc55f4ca1e0e0171de5c4c Test filter-pixdesc-xyz12be failed. Look at tests/data/fate/filter-pixdesc-xyz12be.err for details. make: *** [src/tests/Makefile:315: fate-filter-pixdesc-xyz12be] Error 1 thx [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB Never trust a computer, one day, it may think you are the virus. -- Compn [-- Attachment #1.2: signature.asc --] [-- Type: application/pgp-signature, Size: 195 bytes --] [-- Attachment #2: Type: text/plain, Size: 251 bytes --] _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe". ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [FFmpeg-devel] [FFmpeg-cvslog] swscale: use 16-bit intermediate precision for RGB/XYZ conversion 2025-03-13 23:54 ` Michael Niedermayer @ 2025-03-13 23:58 ` Michael Niedermayer 2025-03-14 0:09 ` Niklas Haas 1 sibling, 0 replies; 5+ messages in thread From: Michael Niedermayer @ 2025-03-13 23:58 UTC (permalink / raw) To: ffmpeg-devel, Niklas Haas [-- Attachment #1.1: Type: text/plain, Size: 1594 bytes --] On Fri, Mar 14, 2025 at 12:54:25AM +0100, Michael Niedermayer wrote: > Hi > > On Sun, Jan 26, 2025 at 07:26:59PM +0100, Michael Niedermayer wrote: > > On Thu, Dec 26, 2024 at 07:33:23PM +0000, Niklas Haas wrote: > > > ffmpeg | branch: master | Niklas Haas <git@haasn.dev> | Mon Dec 16 14:49:39 2024 +0100| [af6d52eec66961f6a502b0f2f390c12226d087cd] | committer: Niklas Haas > > > > > > swscale: use 16-bit intermediate precision for RGB/XYZ conversion > > > > > > The current logic uses 12-bit linear light math, which is woefully insufficient > > > and leads to nasty postarization artifacts. This patch simply switches the > > > internal logic to 16-bit precision. > > > > > > This raises the memory requirement of these tables from 32 kB to 272 kB. > > > > > > All relevant FATE tests updated for improved accuracy. > > > > > > Fixes: #4829 > > > Signed-off-by: Niklas Haas <git@haasn.dev> > > > Sponsored-by: Sovereign Tech Fund > > > > > > > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=af6d52eec66961f6a502b0f2f390c12226d087cd > > > --- > > > > this breaks on x86-32 > > ping > > the fate tests for a major architecture are broken since this > This impacts future bisections over that range for example It also prevents others from easily seeing other failures as x86-32 is already broken thx [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB Freedom in capitalist society always remains about the same as it was in ancient Greek republics: Freedom for slave owners. -- Vladimir Lenin [-- Attachment #1.2: signature.asc --] [-- Type: application/pgp-signature, Size: 195 bytes --] [-- Attachment #2: Type: text/plain, Size: 251 bytes --] _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe". ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [FFmpeg-devel] [FFmpeg-cvslog] swscale: use 16-bit intermediate precision for RGB/XYZ conversion 2025-03-13 23:54 ` Michael Niedermayer 2025-03-13 23:58 ` Michael Niedermayer @ 2025-03-14 0:09 ` Niklas Haas 2025-03-14 20:44 ` Niklas Haas 1 sibling, 1 reply; 5+ messages in thread From: Niklas Haas @ 2025-03-14 0:09 UTC (permalink / raw) To: ffmpeg-devel On Fri, 14 Mar 2025 00:54:25 +0100 Michael Niedermayer <michael@niedermayer.cc> wrote: > Hi > > On Sun, Jan 26, 2025 at 07:26:59PM +0100, Michael Niedermayer wrote: > > On Thu, Dec 26, 2024 at 07:33:23PM +0000, Niklas Haas wrote: > > > ffmpeg | branch: master | Niklas Haas <git@haasn.dev> | Mon Dec 16 14:49:39 2024 +0100| [af6d52eec66961f6a502b0f2f390c12226d087cd] | committer: Niklas Haas > > > > > > swscale: use 16-bit intermediate precision for RGB/XYZ conversion > > > > > > The current logic uses 12-bit linear light math, which is woefully insufficient > > > and leads to nasty postarization artifacts. This patch simply switches the > > > internal logic to 16-bit precision. > > > > > > This raises the memory requirement of these tables from 32 kB to 272 kB. > > > > > > All relevant FATE tests updated for improved accuracy. > > > > > > Fixes: #4829 > > > Signed-off-by: Niklas Haas <git@haasn.dev> > > > Sponsored-by: Sovereign Tech Fund > > > > > > > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=af6d52eec66961f6a502b0f2f390c12226d087cd > > > --- > > > > this breaks on x86-32 > > ping > > the fate tests for a major architecture are broken since this > This impacts future bisections over that range for example My bad, missed this email for some reason. Will investigate and fix tomorrow. > > you can trivially test this on x86-64 with something like: > --cross-prefix=/usr/i686-linux-gnu/bin/ --cc='ccache i686-linux-gnu-gcc-7' --arch=x86_32 --target-os=linux --enable-cross-compile > if you have the correponding packages installed > > before af6d52eec66961f6a502b0f2f390c12226d087cd > TEST filter-pixdesc-xyz12be > > after af6d52eec66961f6a502b0f2f390c12226d087cd: > --- src/tests/ref/fate/filter-pixdesc-xyz12be 2025-03-14 00:46:40.445681223 +0100 > +++ tests/data/fate/filter-pixdesc-xyz12be 2025-03-14 00:47:08.301903796 +0100 > @@ -1 +1 @@ > -pixdesc-xyz12be 1508a33dea936c45d9ee13f7743af00d > +pixdesc-xyz12be 198f43f452bc55f4ca1e0e0171de5c4c > Test filter-pixdesc-xyz12be failed. Look at tests/data/fate/filter-pixdesc-xyz12be.err for details. > make: *** [src/tests/Makefile:311: fate-filter-pixdesc-xyz12be] Error 1 > > in master: > --- src/tests/ref/fate/filter-pixdesc-xyz12be 2025-03-14 00:46:40.445681223 +0100 > +++ tests/data/fate/filter-pixdesc-xyz12be 2025-03-14 00:48:43.042660972 +0100 > @@ -1 +1 @@ > -pixdesc-xyz12be 1508a33dea936c45d9ee13f7743af00d > +pixdesc-xyz12be 198f43f452bc55f4ca1e0e0171de5c4c > Test filter-pixdesc-xyz12be failed. Look at tests/data/fate/filter-pixdesc-xyz12be.err for details. > make: *** [src/tests/Makefile:315: fate-filter-pixdesc-xyz12be] Error 1 > > > thx > > [...] > > -- > Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB > > Never trust a computer, one day, it may think you are the virus. -- Compn _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe". ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [FFmpeg-devel] [FFmpeg-cvslog] swscale: use 16-bit intermediate precision for RGB/XYZ conversion 2025-03-14 0:09 ` Niklas Haas @ 2025-03-14 20:44 ` Niklas Haas 0 siblings, 0 replies; 5+ messages in thread From: Niklas Haas @ 2025-03-14 20:44 UTC (permalink / raw) To: ffmpeg-devel On Fri, 14 Mar 2025 01:09:30 +0100 Niklas Haas <ffmpeg@haasn.xyz> wrote: > On Fri, 14 Mar 2025 00:54:25 +0100 Michael Niedermayer <michael@niedermayer.cc> wrote: > > Hi > > > > On Sun, Jan 26, 2025 at 07:26:59PM +0100, Michael Niedermayer wrote: > > > On Thu, Dec 26, 2024 at 07:33:23PM +0000, Niklas Haas wrote: > > > > ffmpeg | branch: master | Niklas Haas <git@haasn.dev> | Mon Dec 16 14:49:39 2024 +0100| [af6d52eec66961f6a502b0f2f390c12226d087cd] | committer: Niklas Haas > > > > > > > > swscale: use 16-bit intermediate precision for RGB/XYZ conversion > > > > > > > > The current logic uses 12-bit linear light math, which is woefully insufficient > > > > and leads to nasty postarization artifacts. This patch simply switches the > > > > internal logic to 16-bit precision. > > > > > > > > This raises the memory requirement of these tables from 32 kB to 272 kB. > > > > > > > > All relevant FATE tests updated for improved accuracy. > > > > > > > > Fixes: #4829 > > > > Signed-off-by: Niklas Haas <git@haasn.dev> > > > > Sponsored-by: Sovereign Tech Fund > > > > > > > > > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=af6d52eec66961f6a502b0f2f390c12226d087cd > > > > --- > > > > > > this breaks on x86-32 > > > > ping > > > > the fate tests for a major architecture are broken since this > > This impacts future bisections over that range for example > > My bad, missed this email for some reason. > > Will investigate and fix tomorrow. So, I found the bug, but I don't know how to fix it properly. The problem is that tha XYZ/RGB conversion tables are calculated using excess precision from the x87 FPU. This results in slightly different rounding behavior in exactly one case (i == 3415). Fixing this requires setting -mfpmath=sse at compile time. Strangely, I was not able to force the compiler to discard the excess precision even with forcing -fexcess-precision=standard and storing every single subexpression to a `volatile double`. How do we deal with such cases generally? I can think of several options, such as hard-coding the table values (unappealing), or somehow using integer math (very unappealing, how do we calculate an integer power without massive loss of precision?) > > > > > you can trivially test this on x86-64 with something like: > > --cross-prefix=/usr/i686-linux-gnu/bin/ --cc='ccache i686-linux-gnu-gcc-7' --arch=x86_32 --target-os=linux --enable-cross-compile > > if you have the correponding packages installed > > > > before af6d52eec66961f6a502b0f2f390c12226d087cd > > TEST filter-pixdesc-xyz12be > > > > after af6d52eec66961f6a502b0f2f390c12226d087cd: > > --- src/tests/ref/fate/filter-pixdesc-xyz12be 2025-03-14 00:46:40.445681223 +0100 > > +++ tests/data/fate/filter-pixdesc-xyz12be 2025-03-14 00:47:08.301903796 +0100 > > @@ -1 +1 @@ > > -pixdesc-xyz12be 1508a33dea936c45d9ee13f7743af00d > > +pixdesc-xyz12be 198f43f452bc55f4ca1e0e0171de5c4c > > Test filter-pixdesc-xyz12be failed. Look at tests/data/fate/filter-pixdesc-xyz12be.err for details. > > make: *** [src/tests/Makefile:311: fate-filter-pixdesc-xyz12be] Error 1 > > > > in master: > > --- src/tests/ref/fate/filter-pixdesc-xyz12be 2025-03-14 00:46:40.445681223 +0100 > > +++ tests/data/fate/filter-pixdesc-xyz12be 2025-03-14 00:48:43.042660972 +0100 > > @@ -1 +1 @@ > > -pixdesc-xyz12be 1508a33dea936c45d9ee13f7743af00d > > +pixdesc-xyz12be 198f43f452bc55f4ca1e0e0171de5c4c > > Test filter-pixdesc-xyz12be failed. Look at tests/data/fate/filter-pixdesc-xyz12be.err for details. > > make: *** [src/tests/Makefile:315: fate-filter-pixdesc-xyz12be] Error 1 > > > > > > thx > > > > [...] > > > > -- > > Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB > > > > Never trust a computer, one day, it may think you are the virus. -- Compn _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe". ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2025-03-14 20:44 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- [not found] <20241226193325.288834126EE@natalya.videolan.org> 2025-01-26 18:26 ` [FFmpeg-devel] [FFmpeg-cvslog] swscale: use 16-bit intermediate precision for RGB/XYZ conversion Michael Niedermayer 2025-03-13 23:54 ` Michael Niedermayer 2025-03-13 23:58 ` Michael Niedermayer 2025-03-14 0:09 ` Niklas Haas 2025-03-14 20:44 ` Niklas Haas
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