Yes, I was surprised too but it applied to our version ffmpeg 8.0 without problem. But will not check in at this time since it looks like a lot more testing is needed.
On Thu, Dec 18, 2025 at 1:37 PM Andrew Randrianasulu < [email protected]> wrote: > > > чт, 18 дек. 2025 г., 23:20 Phyllis Smith <[email protected]>: > >> I would like to check Andrew's 3 attached patches in as: ffmpeg-8.0.V1 >> ... V2 ... V3 so that they do not get lost. I built 3 different distros >> with them in WITHOUT any vulkan stuff installed just to make sure no impact >> to normalcy. What do you think? >> > > I think this encoder still under development (as in - version I found > *will* hang GPU if used for prores with alpha channel encoding ) and it > probably will not apply itself clearly to our 8.0? Or did it? > > Place to watch now seems to be > > https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20477 > > but due to some long-running compile job (building packages for > NetBSD/sparc via qemu) I am a bit afraid to test it right now ;) > > > > > >> On Tue, Dec 2, 2025 at 6:34 PM Andrew Randrianasulu via Cin < >> [email protected]> wrote: >> >>> On Mon, Dec 1, 2025 at 8:09 PM Andrew Randrianasulu >>> <[email protected]> wrote: >>> > >>> > Probably at patchwork also, but GSoC page links to this >>> > >>> > https://github.com/raphaelthegreat/FFmpeg/tree/prores-vk-encode >>> > >>> > page itself: >>> > >>> > https://summerofcode.withgoogle.com/archive/2025/projects/PHTgRqGg >>> > >>> > so I pulled tree into separate folder, switched to branch, extracted 3 >>> last commits, git am them to ffmpeg.git (there was host copy vulkan fix in >>> meantime) >>> > >>> > And .... >>> > >>> > it seems to work. >>> > >>> > At least for HQ profile ... >>> > >>> > at 4.5 fps, but this is faster than ffv1 (but not lossless, obviously). >>> > >>> > ./ffmpeg -init_hw_device vulkan=vulkan -hwaccel vulkan >>> -filter_hw_device vulkan -i /dev/shm/Nature072-A006C0035_230328_4U1Q.mov >>> -vf libplacebo -c:v prores_ks_vulkan -f matroska -noautoscale -pix_fmt >>> vulkan 4k.mov >>> > ffmpeg version N-120782-gc12bca52f8 Copyright (c) 2000-2025 the FFmpeg >>> developers >>> > built with gcc 11.2.0 (GCC) >>> > configuration: --enable-opencl --disable-debug --enable-libx265 >>> --enable-libx264 --enable-gpl --enable-libplacebo --enable-vulkan >>> --enable-libshaderc --enable-libzimg --enable-libaom --enable-libdav1d >>> --enable-libsoxr --enable-libfontconfig --enable-libfreetype >>> --enable-libfribidi --enable-gnutls --enable-libass --enable-libbluray >>> --enable-libcdio --enable-frei0r --enable-libgsm --enable-openal >>> --enable-libopus --enable-librtmp --enable-libsnappy --enable-libspeex >>> --enable-libssh --enable-libtheora --enable-libtwolame --enable-libv4l2 >>> --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp >>> > libavutil 60. 19.101 / 60. 19.101 >>> > libavcodec 62. 21.100 / 62. 21.100 >>> > libavformat 62. 6.103 / 62. 6.103 >>> > libavdevice 62. 2.100 / 62. 2.100 >>> > libavfilter 11. 10.101 / 11. 10.101 >>> > libswscale 9. 3.100 / 9. 3.100 >>> > libswresample 6. 2.100 / 6. 2.100 >>> > Input #0, mov,mp4,m4a,3gp,3g2,mj2, from >>> '/dev/shm/Nature072-A006C0035_230328_4U1Q.mov': >>> > Metadata: >>> > major_brand : qt >>> > minor_version : 512 >>> > compatible_brands: qt >>> > creation_time : 2023-04-07T18:41:32.000000Z >>> > encoder : Blackmagic Design DaVinci Resolve Studio >>> > Duration: 00:00:08.00, start: 0.000000, bitrate: 1787424 kb/s >>> > Stream #0:0[0x1]: Video: prores (HQ) (apch / 0x68637061), >>> yuv422p10le(tv, bt709, progressive), 3840x2160, 1787418 kb/s, SAR 1:1 DAR >>> 16:9, 60 fps, 60 tbr, 15360 tbn (default) >>> > Metadata: >>> > creation_time : 2023-04-07T18:41:32.000000Z >>> > handler_name : VideoHandler >>> > vendor_id : appl >>> > encoder : Apple ProRes 422 HQ >>> > timecode : 21:22:52:12 >>> > Stream #0:1[0x2](eng): Data: none (tmcd / 0x64636D74), 0 kb/s >>> > Metadata: >>> > creation_time : 2023-04-07T18:41:32.000000Z >>> > handler_name : TimeCodeHandler >>> > timecode : 21:22:52:12 >>> > File '4k.mov' already exists. Overwrite? [y/N] y >>> > Stream mapping: >>> > Stream #0:0 -> #0:0 (prores (native) -> prores (prores_ks_vulkan)) >>> > Press [q] to stop, [?] for help >>> > [prores_ks_vulkan @ 0xb299440] Autoselected HQ profile to keep best >>> quality. It can be overridden through -profile option. >>> > Output #0, matroska, to '4k.mov': >>> > Metadata: >>> > major_brand : qt >>> > minor_version : 512 >>> > compatible_brands: qt >>> > encoder : Lavf62.6.103 >>> > Stream #0:0: Video: prores (HQ) (apch / 0x68637061), vulkan(tv, >>> bt709, progressive), 3840x2160 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 60 >>> fps, 1k tbn (default) >>> > Metadata: >>> > encoder : Lavc62.21.100 prores_ks_vulkan >>> > creation_time : 2023-04-07T18:41:32.000000Z >>> > handler_name : VideoHandler >>> > vendor_id : appl >>> > timecode : 21:22:52:12 >>> > [out#0/matroska @ 0xb29ddc0] video:1770722KiB audio:0KiB subtitle:0KiB >>> other streams:0KiB global headers:0KiB muxing overhead: 0.001071% >>> > frame= 480 fps=4.5 q=-0.0 Lsize= 1770741KiB time=00:00:08.00 >>> bitrate=1813239.1kbits/s speed=0.0755x elapsed=0:01:45.90 >>> > >>> > >>> > testing: >>> > >>> > bash-5.1$ mplayer 4k.mov >>> > MPlayer SVN-r38660-11.2.0 (C) 2000-2024 MPlayer Team >>> > 227 audio & 468 video codecs >>> > do_connect: could not connect to socket >>> > connect: No such file or directory >>> > Failed to open LIRC support. You will not be able to use your remote >>> control. >>> > >>> > Playing 4k.mov. >>> > libavformat version 61.6.100 (internal) >>> > libavformat file format detected. >>> > [lavf] stream 0: video (prores), -vid 0 >>> > VIDEO: [apch] 3840x2160 0bpp 60.000 fps 0.0 kbps ( 0.0 kbyte/s) >>> > >>> ========================================================================== >>> > Opening video decoder: [qtvideo] Quicktime Video decoder >>> > sh->ImageDesc not set, try -demuxer mov if this fails. >>> > QuickTime6.3 DLLs found >>> > QuickTime.qts patched!!! old entry=0x6693c3e0 >>> > theQuickTimeDispatcher catched -> 0x6693c3e0 >>> > WARNING! Invalid Ptr handle! >>> > theQuickTimeDispatcher catched -> 0x6693c3e0 >>> > theQuickTimeDispatcher catched -> 0x6693c3e0 >>> > Movie-Aspect is 1.78:1 - prescaling to correct movie aspect. >>> > VO: [vdpau] 3840x2160 => 3840x2160 Packed YUY2 >>> > DecompressSequenceBegin result=-8961 >>> > VDecoder init failed :( >>> > Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family >>> > libavcodec version 61.17.100 (internal) >>> > Selected video codec: [ffprores] vfm: ffmpeg (FFmpeg Apple ProRes) >>> > >>> ========================================================================== >>> > Clip info: >>> > COMPATIBLE_BRANDS: qt >>> > MAJOR_BRAND: qt >>> > MINOR_VERSION: 512 >>> > ENCODER: Lavf62.6.103 >>> > Load subtitles in ./ >>> > Audio: no sound >>> > Starting playback... >>> > Could not find matching colorspace - retrying with -vf scale... >>> > Opening video filter: [scale] >>> > Movie-Aspect is 1.78:1 - prescaling to correct movie aspect. >>> > [swscaler @ 0x57a10180]bicubic scaler, from yuv422p10le to yuv420p >>> using MMXEXT >>> > VO: [vdpau] 3840x2160 => 3840x2160 Planar YV12 >>> > [VD_FFMPEG] DRI failure. >>> > Movie-Aspect is 1.78:1 - prescaling to correct movie aspect. >>> > VO: [vdpau] 3840x2160 => 3840x2160 Planar YV12 >>> > V: 0.0 0/ 0 ??% ??% ??,?% 0 0 >>> > [VD_FFMPEG] DRI failure. >>> > V: 0.3 0/ 0 ??% ??% ??,?% 0 0 >>> > [ASPECT] Warning: No suitable new res found! >>> > [ASPECT] Warning: No suitable new res found! >>> > V: 1.9 0/ 0 47% 460% 0.0% 0 0 >>> > >>> > Exiting... (Quit) >>> > >>> > >>> > >>> > I wonder if Terje can replicate those results? Do not forgot to check >>> if libplacebo was compiled in for your ffmpeg version ... >>> >>> It works with combination of two ffmpeg lines: >>> >>> >>> ./ffmpeg -init_hw_device vulkan=vulkan -hwaccel vulkan >>> -filter_hw_device vulkan -hwaccel_output_format vulkan -i >>> /dev/shm/Nature072-A006C0035_230328_4U1Q.mov -c:v prores_ks_vulkan >>> -f matroska -noautoscale -pix_fmt vulkan 4k.mov >>> >>> ffmpeg version N-120782-gc12bca52f8 Copyright (c) 2000-2025 the FFmpeg >>> developers >>> built with gcc 11.2.0 (GCC) >>> configuration: --enable-opencl --disable-debug --enable-libx265 >>> --enable-libx264 --enable-gpl --enable-libplacebo --enable-vulkan >>> --enable-libshaderc --enable-libzimg --enable-libaom --enable-libdav1d >>> --enable-libsoxr --enable-libfontconfig --enable-libfreetype >>> --enable-libfribidi --enable-gnutls --enable-libass --enable-libbluray >>> --enable-libcdio --enable-frei0r --enable-libgsm --enable-openal >>> --enable-libopus --enable-librtmp --enable-libsnappy --enable-libspeex >>> --enable-libssh --enable-libtheora --enable-libtwolame >>> --enable-libv4l2 --enable-libvidstab --enable-libvorbis >>> --enable-libvpx --enable-libwebp >>> libavutil 60. 19.101 / 60. 19.101 >>> libavcodec 62. 21.100 / 62. 21.100 >>> libavformat 62. 6.103 / 62. 6.103 >>> libavdevice 62. 2.100 / 62. 2.100 >>> libavfilter 11. 10.101 / 11. 10.101 >>> libswscale 9. 3.100 / 9. 3.100 >>> libswresample 6. 2.100 / 6. 2.100 >>> Input #0, mov,mp4,m4a,3gp,3g2,mj2, from >>> '/dev/shm/Nature072-A006C0035_230328_4U1Q.mov': >>> Metadata: >>> major_brand : qt >>> minor_version : 512 >>> compatible_brands: qt >>> creation_time : 2023-04-07T18:41:32.000000Z >>> encoder : Blackmagic Design DaVinci Resolve Studio >>> Duration: 00:00:08.00, start: 0.000000, bitrate: 1787424 kb/s >>> Stream #0:0[0x1]: Video: prores (HQ) (apch / 0x68637061), >>> yuv422p10le(tv, bt709, progressive), 3840x2160, 1787418 kb/s, SAR 1:1 >>> DAR 16:9, 60 fps, 60 tbr, 15360 tbn (default) >>> Metadata: >>> creation_time : 2023-04-07T18:41:32.000000Z >>> handler_name : VideoHandler >>> vendor_id : appl >>> encoder : Apple ProRes 422 HQ >>> timecode : 21:22:52:12 >>> Stream #0:1[0x2](eng): Data: none (tmcd / 0x64636D74), 0 kb/s >>> Metadata: >>> creation_time : 2023-04-07T18:41:32.000000Z >>> handler_name : TimeCodeHandler >>> timecode : 21:22:52:12 >>> Stream mapping: >>> Stream #0:0 -> #0:0 (prores (native) -> prores (prores_ks_vulkan)) >>> Press [q] to stop, [?] for help >>> [prores_ks_vulkan @ 0xc9c7400] Autoselected HQ profile to keep best >>> quality. It can be overridden through -profile option. >>> Output #0, matroska, to '4k.mov': >>> Metadata: >>> major_brand : qt >>> minor_version : 512 >>> compatible_brands: qt >>> encoder : Lavf62.6.103 >>> Stream #0:0: Video: prores (HQ) (apch / 0x68637061), vulkan(tv, >>> bt709, progressive), 3840x2160 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, >>> 60 fps, 1k tbn (default) >>> Metadata: >>> encoder : Lavc62.21.100 prores_ks_vulkan >>> creation_time : 2023-04-07T18:41:32.000000Z >>> handler_name : VideoHandler >>> vendor_id : appl >>> timecode : 21:22:52:12 >>> [out#0/matroska @ 0xc9cbb80] video:1744362KiB audio:0KiB subtitle:0KiB >>> other streams:0KiB global headers:0KiB muxing overhead: 0.001087% >>> frame= 480 fps=5.4 q=-0.0 Lsize= 1744381KiB time=00:00:08.00 >>> bitrate=1786246.0kbits/s speed=0.0907x elapsed=0:01:28.16 >>> >>> testing: >>> >>> bash-5.1$ mpv 4k.mov >>> Video --vid=1 (*) (prores 3840x2160 60 fps) >>> [ffmpeg/video] prores: Unknown prores profile 0 >>> [ffmpeg/video] prores: Unknown prores profile 0 >>> [ffmpeg/video] prores: Unknown prores profile 0 >>> [ffmpeg/video] prores: Unknown prores profile 0 >>> [ffmpeg/video] prores: Unknown prores profile 0 >>> VO: [gpu] 3840x2160 yuv422p10 >>> V: 00:00:07.967 / 00:00:08.000 (100%) Dropped: 148 >>> >>> so, a bit faster than with libplacebo. >>> >>> >>> Patches (git am) for ffmpeg git from >>> >>> git://git.videolan.org/ffmpeg.git >>> >>> at commit >>> >>> commit 413346bd06c33226254dacc829f128a6b6c337d7 (origin/master, >>> origin/HEAD) >>> >>> attached .... >>> _______________________________________________ >>> Cin mailing list -- [email protected] >>> To unsubscribe send an email to [email protected] >>> >>
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