#10182: prores_videotoolbox results are inaccurate color
-------------------------------------+-------------------------------------
Reporter: Mils | Type: defect
Status: new | Priority: normal
Component: avcodec | Version: 5.1.2
Keywords: prores, | Blocked By:
prores_videotoolbox, videotoolbox |
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Summary of the bug:
Hi,
I would like to utilise the hardware acceleration of the Apple Silicon.
I have tried using hevc_videotoolbox h264_videotoolbox both came out fine.
Even the old -c:v prores_ks is also fine (just very slow at 0.2x)
But when I use the prores_videotoolbox the results came like it has been
applied too much exposure/gamma
Attached are the comparison and YES I own the movie right through Bluray
AND Digital iTunes. This is for personal use/project.
How to reproduce:
{{{
% ffmpeg -i H2-30s.mkv -c:v prores_videotoolbox H2-30sPR.mov
ffmpeg version 5.1.2 Copyright (c) 2000-2022 the FFmpeg developers
built with Apple clang version 14.0.0 (clang-1400.0.29.202)
configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/5.1.2_4 --enable-
shared --enable-pthreads --enable-version3 --cc=clang --host-cflags=
--host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-
libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable-
libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-
librubberband --enable-libsnappy --enable-libsrt --enable-libsvtav1
--enable-libtesseract --enable-libtheora --enable-libvidstab --enable-
libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-
libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma
--enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-
libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-
libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-
libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox
--enable-neon
libavutil 57. 28.100 / 57. 28.100
libavcodec 59. 37.100 / 59. 37.100
libavformat 59. 27.100 / 59. 27.100
libavdevice 59. 7.100 / 59. 7.100
libavfilter 8. 44.100 / 8. 44.100
libswscale 6. 7.100 / 6. 7.100
libswresample 4. 7.100 / 4. 7.100
libpostproc 56. 6.100 / 56. 6.100
Input #0, matroska,webm, from 'H2-30s.mkv':
Metadata:
ENCODER : Lavf59.27.100
Duration: 00:00:32.50, start: 0.009000, bitrate: 20065 kb/s
Chapters:
Chapter #0:0: start 0.000000, end 30.000000
Metadata:
title : Chapter 05
Stream #0:0: Video: hevc (Main 10), yuv420p10le(tv,
bt2020nc/bt2020/smpte2084), 3840x1608, SAR 1:1 DAR 160:67, 23.98 fps,
23.98 tbr, 1k tbn (default)
Metadata:
BPS-eng : 16298452
DURATION-eng : 03:06:34.517000000
NUMBER_OF_FRAMES-eng: 268400
NUMBER_OF_BYTES-eng: 22806662308
_STATISTICS_WRITING_APP-eng: mkvmerge v38.0.0 ('The Silent Type')
64-bit
_STATISTICS_WRITING_DATE_UTC-eng: 2020-12-10 01:14:57
_STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
DURATION : 00:00:30.257000000
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/10182>
FFmpeg <https://ffmpeg.org>
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