[FFmpeg-user] Color Shift -- dpx to prores

[Hardik Kanakia]

Hi,

While batch rendering dpx frames to apple prores, I am identifying huge
color shift issue

Probably because of RGB to YUV color space


Below is the command:

*/usr/local/sbin/ffmpeg -r 24.000000  -i "REEL_09_00012%02d.dpx" -s
1920x1080 -r 24.000000  -vcodec prores -profile:v 3  -vf
colormatrix=bt601:bt709   test.mov*
ffmpeg version 2.0.1 Copyright (c) 2000-2013 the FFmpeg developers
  built on Sep 24 2013 05:31:18 with gcc 4.8 (Debian 4.8.1-10)
  configuration: --extra-cflags=-I../static/include
--extra-ldflags='-L../static/lib -static' --enable-gpl --enable-version3
--enable-static --disable-shared --disable-debug --enable-runtime-cpudetect
--enable-libmp3lame --enable-libx264 --enable-libspeex --enable-libvorbis
--enable-libvpx --enable-libfreetype --enable-libxvid
--enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora
--enable-libvo-aacenc --enable-libvo-amrwbenc --enable-gray
--enable-libopenjpeg --disable-ffserver
  libavutil      52. 38.100 / 52. 38.100
  libavcodec     55. 18.102 / 55. 18.102
  libavformat    55. 12.100 / 55. 12.100
  libavdevice    55.  3.100 / 55.  3.100
  libavfilter     3. 79.101 /  3. 79.101
  libswscale      2.  3.100 /  2.  3.100
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  3.100 / 52.  3.100
[image2 @ 0x357e480] Stream #0: not enough frames to estimate rate;
consider increasing probesize
Input #0, image2, from 'REEL_09_00012%02d.dpx':
  Duration: 00:00:03.96, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: dpx, gbrp10le, 2048x1556, 25 tbr, 25 tbn, 25 tbc
File 'test.mov' already exists. Overwrite ? [y/N] y
Output #0, mov, to 'test.mov':
  Metadata:
    encoder         : Lavf55.12.100
    Stream #0:0: Video: prores (apch) (apch / 0x68637061), yuv422p10le,
1920x1080, q=2-31, 200 kb/s, 12288 tbn, 24 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (dpx -> prores)
Press [q] to stop, [?] for help

Need Help to convert with no color shift


Regards,

Hardik Kanakia