Hi,
I noticed recently that Vittorio Giovara added SMPTE 431/432 support to the
colorspace video filter. I often create h264/prores copies of XYZ Digital
Cinema Packages via ffmpeg in a film archive. However the colours do not always
look correct. By this I mean they do not look the same as when played back in a
cinema projector or with EasyDCP player when the source colour space is
declared as XYZ. You can see examples of this on pages 30/31 of this manual:
https://www.easydcp.com/sync/manuals/easyDCP_Player_User_Manual.pdf
I was hoping that the colorspace filter could 'burn in' the colour conversion
from the greenish images of the source to something more correct.
Is this possible with the colorpspace filter in its current form? As it
doesn't currently accept XYZ as input, I am taking the XYZ 12-bit Jpeg2000
files and converting them to either h264 or prores and it's these YUV files
that I'm experimenting with. Should I use a different intermediate? My guess is
that I need to declare the input primaries as smpte431 and declare the output
as bt709 using -vf colorspace=iprimaries=smpte431:all=bt709 but am I on the
complete wrong track here? That command (full output below) threw up an error
saying' unsupported input transfer characteristics 2 (unknown). As there is no
SMPTE431/432 itrc option, I didn't know what to put. I tried itrc=gamma22 (just
to try something) but got another error: [Parsed_colorspace_0 @ 0x7fccf8700360]
Unsupported input colorspace 2 (unknown)
Here's what I tried:
ffmpeg -i data_muxed_2016_11_06T10_36_06.mkv -vf
colorspace=iprimaries=smpte431:all=bt709 -an color.mkv
ffmpeg version N-44918-g7746103 Copyright (c) 2000-2016 the FFmpeg developers
built with Apple LLVM version 7.3.0 (clang-703.0.31)
configuration: --prefix=/usr/local/Cellar/ffmpeg/HEAD-7746103 --enable-shared
--enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables
--enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay
--enable-libass --enable-libfreetype --enable-libmp3lame --enable-libtesseract
--enable-libx264 --enable-libxvid --enable-opencl --disable-lzma
--enable-libopenjpeg --disable-decoder=jpeg2000
--extra-cflags=-I/usr/local/Cellar/openjpeg/2.1.2/include/openjpeg-2.1
--enable-vda
libavutil 55. 35.100 / 55. 35.100
libavcodec 57. 66.101 / 57. 66.101
libavformat 57. 57.100 / 57. 57.100
libavdevice 57. 2.100 / 57. 2.100
libavfilter 6. 66.100 / 6. 66.100
libavresample 3. 2. 0 / 3. 2. 0
libswscale 4. 3.100 / 4. 3.100
libswresample 2. 4.100 / 2. 4.100
libpostproc 54. 2.100 / 54. 2.100
Input #0, matroska,webm, from 'data_muxed_2016_11_06T10_36_06.mkv':
Metadata:
ENCODER : Lavf57.57.100
Duration: 00:03:00.77, start: 0.000000, bitrate: 12533 kb/s
Stream #0:0: Video: h264 (High), yuv420p(progressive), 1920x1080 [SAR 1:1
DAR 16:9], 24 fps, 24 tbr, 1k tbn, 48 tbc (default)
Metadata:
FILE_PACKAGE_UMID:
0x060A2B340101010501010F20130000003CBE7F62D0F24DC0A3E352045221FE0C
FILE_PACKAGE_NAME: File Package: SMPTE 429-4 frame wrapping of JPEG 2000
codestreams
TRACK_NAME : Picture Track
ENCODER : Lavc57.66.101 libx264
DURATION : 00:03:00.771000000
Stream #0:1: Audio: aac (LC), 48000 Hz, 5.1, fltp (default)
Metadata:
FILE_PACKAGE_UMID:
0x060A2B340101010501010F20130000000E8C1ADC9E914415BA3CC9BC095FFD84
FILE_PACKAGE_NAME: File Package: SMPTE 382M frame wrapping of wave audio
TRACK_NAME : Sound Track
ENCODER : Lavc57.66.101 aac
DURATION : 00:02:59.349000000
File 'color.mkv' already exists. Overwrite ? [y/N] y
[libx264 @ 0x7fe30d8d1800] using SAR=1/1
[libx264 @ 0x7fe30d8d1800] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
AVX
[libx264 @ 0x7fe30d8d1800] profile High, level 4.0
[libx264 @ 0x7fe30d8d1800] 264 - core 148 r2699 a5e06b9 - H.264/MPEG-4 AVC
codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html - options:
cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1
psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0
deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=18 lookahead_threads=3
sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0
constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1
open_gop=0 weightp=2 keyint=250 keyint_min=24 scenecut=40 intra_refresh=0
rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4
ip_ratio=1.40 aq=1:1.00
Output #0, matroska, to 'color.mkv':
Metadata:
encoder : Lavf57.57.100
Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv420p, 1920x1080
[SAR 1:1 DAR 16:9], q=-1--1, 24 fps, 1k tbn, 24 tbc (default)
Metadata:
FILE_PACKAGE_UMID:
0x060A2B340101010501010F20130000003CBE7F62D0F24DC0A3E352045221FE0C
FILE_PACKAGE_NAME: File Package: SMPTE 429-4 frame wrapping of JPEG 2000
codestreams
TRACK_NAME : Picture Track
DURATION : 00:03:00.771000000
encoder : Lavc57.66.101 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[Parsed_colorspace_0 @ 0x7fe30c400000] Unsupported input transfer
characteristics 2 (unknown)
Failed to inject frame into filter network: Invalid argument
Conversion failed!
ffmpeg -i data_muxed_2016_11_06T10_36_06.mkv -vf
colorspace=itrc=gamma22:iprimaries=smpte432:all=bt709 -an color.mkv
ffmpeg version N-44918-g7746103 Copyright (c) 2000-2016 the FFmpeg developers
built with Apple LLVM version 7.3.0 (clang-703.0.31)
configuration: --prefix=/usr/local/Cellar/ffmpeg/HEAD-7746103 --enable-shared
--enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables
--enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay
--enable-libass --enable-libfreetype --enable-libmp3lame --enable-libtesseract
--enable-libx264 --enable-libxvid --enable-opencl --disable-lzma
--enable-libopenjpeg --disable-decoder=jpeg2000
--extra-cflags=-I/usr/local/Cellar/openjpeg/2.1.2/include/openjpeg-2.1
--enable-vda
libavutil 55. 35.100 / 55. 35.100
libavcodec 57. 66.101 / 57. 66.101
libavformat 57. 57.100 / 57. 57.100
libavdevice 57. 2.100 / 57. 2.100
libavfilter 6. 66.100 / 6. 66.100
libavresample 3. 2. 0 / 3. 2. 0
libswscale 4. 3.100 / 4. 3.100
libswresample 2. 4.100 / 2. 4.100
libpostproc 54. 2.100 / 54. 2.100
Input #0, matroska,webm, from 'data_muxed_2016_11_06T10_36_06.mkv':
Metadata:
ENCODER : Lavf57.57.100
Duration: 00:03:00.77, start: 0.000000, bitrate: 12533 kb/s
Stream #0:0: Video: h264 (High), yuv420p(progressive), 1920x1080 [SAR 1:1
DAR 16:9], 24 fps, 24 tbr, 1k tbn, 48 tbc (default)
Metadata:
FILE_PACKAGE_UMID:
0x060A2B340101010501010F20130000003CBE7F62D0F24DC0A3E352045221FE0C
FILE_PACKAGE_NAME: File Package: SMPTE 429-4 frame wrapping of JPEG 2000
codestreams
TRACK_NAME : Picture Track
ENCODER : Lavc57.66.101 libx264
DURATION : 00:03:00.771000000
Stream #0:1: Audio: aac (LC), 48000 Hz, 5.1, fltp (default)
Metadata:
FILE_PACKAGE_UMID:
0x060A2B340101010501010F20130000000E8C1ADC9E914415BA3CC9BC095FFD84
FILE_PACKAGE_NAME: File Package: SMPTE 382M frame wrapping of wave audio
TRACK_NAME : Sound Track
ENCODER : Lavc57.66.101 aac
DURATION : 00:02:59.349000000
File 'color.mkv' already exists. Overwrite ? [y/N] y
[libx264 @ 0x7fccf88e9000] using SAR=1/1
[libx264 @ 0x7fccf88e9000] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
AVX
[libx264 @ 0x7fccf88e9000] profile High, level 4.0
[libx264 @ 0x7fccf88e9000] 264 - core 148 r2699 a5e06b9 - H.264/MPEG-4 AVC
codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html - options:
cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1
psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0
deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=18 lookahead_threads=3
sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0
constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1
open_gop=0 weightp=2 keyint=250 keyint_min=24 scenecut=40 intra_refresh=0
rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4
ip_ratio=1.40 aq=1:1.00
Output #0, matroska, to 'color.mkv':
Metadata:
encoder : Lavf57.57.100
Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv420p, 1920x1080
[SAR 1:1 DAR 16:9], q=-1--1, 24 fps, 1k tbn, 24 tbc (default)
Metadata:
FILE_PACKAGE_UMID:
0x060A2B340101010501010F20130000003CBE7F62D0F24DC0A3E352045221FE0C
FILE_PACKAGE_NAME: File Package: SMPTE 429-4 frame wrapping of JPEG 2000
codestreams
TRACK_NAME : Picture Track
DURATION : 00:03:00.771000000
encoder : Lavc57.66.101 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[Parsed_colorspace_0 @ 0x7fccf8700360] Unsupported input colorspace 2 (unknown)
Failed to inject frame into filter network: Invalid argument
Conversion failed!
Thanks,
Kieran.
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