[FFmpeg-user] HD > SD Down-Convert Prores Color

Mon May 18 13:50:20 CEST 2015

----------------------------------------
> To: ffmpeg-user at ffmpeg.org
> From: cehoyos at ag.or.at
> Date: Mon, 18 May 2015 10:45:25 +0000
> Subject: Re: [FFmpeg-user] HD> SD Down-Convert Prores Color
>
> Kevin Wells <kevwells <at> hotmail.co.uk> writes:
>
>> This does not suffer from the issue, but the colours look slightly off
>>
>> ffmpeg -i /Users/kev/Movies/HD_BARS.mov -vf scale=720:576
>> -vcodec v210 -an out.mov
>
> Please test the following, sorry for not realising this earlier:
> $ ffmpeg -i HD_BARS.mov -s pal -vcodec prores -an -movflags +write_colr
> -an -s pal -color_primaries bt709 -color_trc bt709 -colorspace bt709 out.mov
>
> Carl Eugen
>
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Hi Carl, this is extremely close, the best yet! Thanks for not giving up on me.
Only trouble is the file SD PAL file is flagged as bt709?
I will show the readout and attache the FCP video scope grabs.

ffmpeg -i HD_BARS.mov -s pal -vcodec prores -an -movflags +write_colr -an -s pal -color_primaries bt709 -color_trc bt709 -colorspace bt709 out.mov
ffmpeg version 2.6.2-tessus Copyright (c) 2000-2015 the FFmpeg developers
  built with Apple LLVM version 6.0 (clang-600.0.57) (based on LLVM 3.5svn)
  configuration: --cc=/usr/bin/clang --prefix=/Users/helmutt/data/ext/ffmpeg/sw --as=yasm --extra-version=tessus --disable-shared --enable-static --disable-ffplay --enable-gpl --enable-pthreads --enable-postproc --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libx265 --enable-libxvid --enable-libspeex --enable-bzlib --enable-zlib --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libxavs --enable-libsoxr --enable-libwavpack --enable-version3 --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvpx --enable-libgsm --enable-libopus --enable-libmodplug --enable-fontconfig --enable-libfreetype --enable-libass --enable-libbluray --enable-filters --disable-indev=qtkit --disable-indev=x11grab_xcb --enable-runtime-cpudetect
  libavutil      54. 20.100 / 54. 20.100
  libavcodec     56. 26.100 / 56. 26.100
  libavformat    56. 25.101 / 56. 25.101
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 11.102 /  5. 11.102
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  1.100 /  1.  1.100
  libpostproc    53.  3.100 / 53.  3.100
Guessed Channel Layout for  Input Stream #0.1 : stereo
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'HD_BARS.mov':
  Metadata:
    major_brand     : qt  
    minor_version   : 537199360
    compatible_brands: qt  
    creation_time   : 2015-05-12 12:56:17
  Duration: 00:00:10.00, start: 0.000000, bitrate: 16901 kb/s
    Stream #0:0(eng): Video: prores (apch / 0x68637061), yuv422p10le(bt709), 1920x1080, 15360 kb/s, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 25 tbn, 25 tbc (default)
    Metadata:
      creation_time   : 2015-05-12 12:56:17
      handler_name    : Apple Alias Data Handler
      encoder         : Apple ProRes 422 HQ
      timecode        : 00:00:00:00
    Stream #0:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, 2 channels, s16, 1536 kb/s (default)
    Metadata:
      creation_time   : 2015-05-12 12:56:17
      handler_name    : Apple Alias Data Handler
    Stream #0:2(eng): Data: none (tmcd / 0x64636D74), 0 kb/s (default)
    Metadata:
      creation_time   : 2015-05-12 12:56:18
      handler_name    : Apple Alias Data Handler
      timecode        : 00:00:00:00
File 'out.mov' already exists. Overwrite ? [y/N] y
[prores @ 0x7ff7d305de00] encoding with ProRes standard (apcn) profile
[prores @ 0x7ff7d305e400] encoding with ProRes standard (apcn) profile
[prores @ 0x7ff7d305ea00] encoding with ProRes standard (apcn) profile
[prores @ 0x7ff7d306c600] encoding with ProRes standard (apcn) profile
[prores @ 0x7ff7d306ee00] encoding with ProRes standard (apcn) profile
[prores @ 0x7ff7d3071600] encoding with ProRes standard (apcn) profile
[prores @ 0x7ff7d3073e00] encoding with ProRes standard (apcn) profile
[prores @ 0x7ff7d3076600] encoding with ProRes standard (apcn) profile
[prores @ 0x7ff7d2828000] encoding with ProRes standard (apcn) profile
Output #0, mov, to 'out.mov':
  Metadata:
    major_brand     : qt  
    minor_version   : 537199360
    compatible_brands: qt  
    encoder         : Lavf56.25.101
    Stream #0:0(eng): Video: prores (apcn) (apcn / 0x6E637061), yuv422p10le(bt709), 720x576 [SAR 64:45 DAR 16:9], q=2-31, 200 kb/s, 25 fps, 12800 tbn, 25 tbc (default)
    Metadata:
      creation_time   : 2015-05-12 12:56:17
      handler_name    : Apple Alias Data Handler
      timecode        : 00:00:00:00
      encoder         : Lavc56.26.100 prores
Stream mapping:
  Stream #0:0 -> #0:0 (prores (native) -> prores (native))
Press [q] to stop, [?] for help
frame=   43 fps=0.0 q=0.0 size=    1471kB time=00:00:01.64 bitrate=7350.2kbits/sframe=   87 fps= 85 q=0.0 size=    3051kB time=00:00:03.40 bitrate=7350.1kbits/sframe=  129 fps= 84 q=0.0 size=    4558kB time=00:00:05.08 bitrate=7350.1kbits/sframe=  170 fps= 83 q=0.0 size=    6029kB time=00:00:06.72 bitrate=7350.0kbits/sframe=  208 fps= 82 q=0.0 size=    7393kB time=00:00:08.24 bitrate=7350.0kbits/sframe=  248 fps= 81 q=0.0 size=    8829kB time=00:00:09.84 bitrate=7350.0kbits/sframe=  250 fps= 81 q=0.0 Lsize=    8974kB time=00:00:10.00 bitrate=7351.2kbits/s    
video:8972kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.016218% 		 	   		  
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