Hi again, Kieran,
sorry I meaned : "are the DPX logarithmic XYZ or linear XYZ? "
Didnt mean RGB.
Best Regards
Chris
Am 13.05.2016 um 12:46 schrieb Kieran O'Leary:
Hello,
I want to transcode a DCP to ProRes or x264 while transforming to bt709. I am
experimenting with the colorspace filter, as I've found that most DCPS that I've
converted have low contrast and washed out colours. As some DCP players (EasyDCP)
allow XYZ -> bt709 transforms, I wanted to see if forcing bt709 would produce
more satisfactory images. Clearly, I am not very knowledgeable when it comes to
colour spaces, so any feedback is greatly appreciated.
I noticed that the colormatrix filter requires that both input and output
colour matrixes are specified, but I understood from the documentation that the
colorspace filter does not require this.
Here is my command: ffmpeg -i /Volumes/Stardom/kieran_tests/input.mxf -c:v
prores -vf colorspace=bt709 /Volumes/Stardom/kieran_tests/output.mov
ffmpeg -i /Volumes/Stardom/kieran_tests/input.mxf -c:v prores -vf
colorspace=bt709 /Volumes/Stardom/kieran_tests/output.mov
ffmpeg version git-2016-05-13-ed3a025 Copyright (c) 2000-2016 the FFmpeg
developers
built with Apple LLVM version 6.0 (clang-600.0.57) (based on LLVM 3.5svn)
configuration: --prefix=/usr/local/Cellar/ffmpeg/HEAD --enable-shared
--enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables
--enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-opencl
--enable-libx264 --enable-libmp3lame --enable-libxvid --enable-libfreetype
--enable-libfaac --enable-libass --enable-ffplay --enable-libx265
--enable-libopenjpeg --disable-decoder=jpeg2000
--extra-cflags=-I/usr/local/Cellar/openjpeg/1.5.2_1/include/openjpeg-1.5
--enable-nonfree --enable-vda
libavutil 55. 24.100 / 55. 24.100
libavcodec 57. 41.102 / 57. 41.102
libavformat 57. 36.100 / 57. 36.100
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 45.100 / 6. 45.100
libavresample 3. 0. 0 / 3. 0. 0
libswscale 4. 1.100 / 4. 1.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
[mxf @ 0x7fd0bc00ac00] "OPAtom" with 2 ECs - assuming OP1a
Input #0, mxf, from '/Volumes/Stardom/kieran_tests/input.mxf':
Metadata:
uid : a9becd46-734f-4f2b-b8a0-b9ef8fb12e7c
generation_uid : 43deb483-89d5-4999-adb2-0b489a4c6b6b
company_name : QubeCinema, Inc.
product_name : QubeMaster Pro
product_version : 2.4
product_uid : a6d3ea56-8155-4dfc-86f6-664b12671427
modification_date: 2016-01-15 12:55:18
application_platform: win32
material_package_umid:
0x060A2B340101010501010F2013000000397E9CDFB9214B38BD67D776C752A98A
material_package_name: AS-DCP Material Package
timecode : 00:00:00:00
Duration: 00:12:03.25, start: 0.000000, bitrate: 178178 kb/s
Stream #0:0: Video: jpeg2000, rgb48le(12 bpc), 2048x858, SAR 1:1 DAR
1024:429, 24 tbr, 24 tbn
Metadata:
file_package_umid:
0x060A2B340101010501010F2013000000C1CA596A60CE49009349EA73FD0B54D3
file_package_name: File Package: SMPTE 429-4 frame wrapping of JPEG 2000
codestreams
File '/Volumes/Stardom/kieran_tests/output.mov' already exists. Overwrite ?
[y/N] y
[prores @ 0x7fd0bd074c00] encoding with ProRes standard (apcn) profile
[prores @ 0x7fd0bd079400] encoding with ProRes standard (apcn) profile
[prores @ 0x7fd0bd07dc00] encoding with ProRes standard (apcn) profile
[prores @ 0x7fd0bd082400] encoding with ProRes standard (apcn) profile
[prores @ 0x7fd0bd086c00] encoding with ProRes standard (apcn) profile
[prores @ 0x7fd0bd08b400] encoding with ProRes standard (apcn) profile
[prores @ 0x7fd0bd08fc00] encoding with ProRes standard (apcn) profile
[prores @ 0x7fd0bd094400] encoding with ProRes standard (apcn) profile
[prores @ 0x7fd0bc012400] encoding with ProRes standard (apcn) profile
[mov @ 0x7fd0bc016c00] Using AVStream.codec to pass codec parameters to muxers
is deprecated, use AVStream.codecpar instead.
Output #0, mov, to '/Volumes/Stardom/kieran_tests/output.mov':
Metadata:
uid : a9becd46-734f-4f2b-b8a0-b9ef8fb12e7c
generation_uid : 43deb483-89d5-4999-adb2-0b489a4c6b6b
company_name : QubeCinema, Inc.
product_name : QubeMaster Pro
product_version : 2.4
product_uid : a6d3ea56-8155-4dfc-86f6-664b12671427
modification_date: 2016-01-15 12:55:18
application_platform: win32
material_package_umid:
0x060A2B340101010501010F2013000000397E9CDFB9214B38BD67D776C752A98A
material_package_name: AS-DCP Material Package
timecode : 00:00:00:00
encoder : Lavf57.36.100
Stream #0:0: Video: prores (apcn / 0x6E637061), yuv422p10le, 2048x858 [SAR
1:1 DAR 1024:429], q=2-31, 200 kb/s, 0.04 fps, 12288 tbn
Metadata:
file_package_umid:
0x060A2B340101010501010F2013000000C1CA596A60CE49009349EA73FD0B54D3
file_package_name: File Package: SMPTE 429-4 frame wrapping of JPEG 2000
codestreams
encoder : Lavc57.41.102 prores
Stream mapping:
Stream #0:0 -> #0:0 (jpeg2000 (libopenjpeg) -> prores (native))
Press [q] to stop, [?] for help
[Parsed_colorspace_0 @ 0x7fd0bbe00000] Unsupported input primaries 2 (unknown)
Failed to inject frame into filter network: Invalid argument
Conversion failed!
I have also tried
ffmpeg -i /Volumes/Stardom/kieran_tests/input.mxf -c:v prores -vf
colorspace=all=bt709 /Volumes/Stardom/kieran_tests/output.mov
but I got the same error.
Thanks!
-Kieran.
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