[FFmpeg-trac] #1294(undetermined:open): Support for Omneon AVC Intra 50/100 MXF OP1a files

FFmpeg trac at avcodec.org
Fri Sep 21 17:24:38 CEST 2012

#1294: Support for Omneon AVC Intra 50/100 MXF OP1a files
             Reporter:  Thomas       |                    Owner:
  Mundt                              |                   Status:  open
                 Type:  defect       |                Component:
             Priority:  normal       |  undetermined
              Version:  git-master   |               Resolution:
             Keywords:  h264intra    |               Blocked By:
  mxf                                |  Reproduced by developer:  1
             Blocking:               |
Analyzed by developer:  0            |

Comment (by Thomas Mundt):

 Maybe inconsistant was the wrong word. It looks like some colors from
 previous frames are still there. It´s slight but visible especially at
 crossfaded scene changes.
 I investigated a little and as I now know where to look for the SPS/PPS, I
 compared my samples with files from other sources.
 AVID Transfermanager and Quantel headers have equal SPS/PPS but are
 slightly different to the file wrapped by the XFConverter.

 When I compile FFmpeg with the AVID/Quantel SPS/PPS the color problems are
 So the XFConverter headers are inaccurate. The extracted header of the
 AVCI50/720p file is even completely wrong, since it has the same SPS/PPS
 as the AVCI100/720p file.

 I´ve seen that you already build a patch at gmane.comp.video.ffmpeg.devel.
 I extended it a little to additionally support AVCI100/720p and
 AVCI50/1080i. Since I could not get other AVCI100/720p and AVCI50/1080i
 files with working header, I used the XFConverter SPS/PPS.
 And I found an AVCI100/1080p AVID file with SPS/PPS that also works for
 the file from ticket #1666.

 The patch is attached...

Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1294#comment:15>
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