Latest post Fri, Jun 26 2020 8:21 PM by Ondrej Azor. 3 replies.
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  • Wed, Jun 24 2020 7:36 PM

    • Ondrej Azor
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    • Joined on Tue, Jun 21 2011
    • Slovenská republika
    • Posts 45
    • Points 565

    Media Composer 2020.6 - FrameFlex issue (sort of continued from 2020.5)

    The FrameFlex scaling issue is still not resolved in 2020.6. The issue has changed however and from what I was able to find out, the core of the problem lies in RGB->YUV conversion. From my latest response to Avid support:

    After some more testing with various file formats (codecs) I found out that the issue is present only for RGB source clips (DNxHR444 or Prores4444), but not for any other YUV clips (DNxHR LB/SQ/HQ/HQX or Prores LT/422/HQ). This would indicate that the issue is probably related to RGB->YUV conversion in render process. I tried to switch the working space from YUV709 to RGB709 and the issue is gone for all clips/formats/codecs! So it looks the problem is only in RGB->YUV conversion, not the other way around, since all clips rendered correctly in RGB709 space (even YUV clips).

    So after all those experiments the new issue report is very narrow - when using RGB DCI 2K scope source clips in YUV HD1080p timeline, the preview on the timeline looks fine, but as soon as I render the clips (or they are underlying part of the render in upper video levels), which involves RGB -> YUV conversion, the picture gets corrupted.

    Hope this helps at least as a workaround for anyone facing the FrameFLex problem (it affects ALL of my DCI 2K exports linked to HD1080 projects...).

    DNxIO w. MC2018.11 on HP z820 [view my complete system specs]
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  • Wed, Jun 24 2020 7:37 PM In reply to

    • Ondrej Azor
    • Not Ranked
    • Joined on Tue, Jun 21 2011
    • Slovenská republika
    • Posts 45
    • Points 565

    Re: Media Composer 2020.6 - FrameFlex issue (sort of continued from 2020.5)

    To make it clear - the workaround is to use RGB709 color space instead of YUV709 when dealing with this issue.

    DNxIO w. MC2018.11 on HP z820 [view my complete system specs]
  • Fri, Jun 26 2020 2:21 PM In reply to

    • Rihafilm
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    • Joined on Mon, Jul 19 2010
    • Posts 89
    • Points 1,195

    Re: Media Composer 2020.6 - FrameFlex issue (sort of continued from 2020.5)

    Thanks for sharing your findings. Looks like I cheered too soon about the FrameFlex issues finally beeing fixed after 8 months... Hmm
    I really hope FrameFlex gets an complete overhaul in the near future.

    This is what Avid support sent me over half a year ago:

    Having a better frameflex was one of the top 10 feature requests voted for in Avid ACA.
    = Improvements will happen in future versions.
    MC 2019.7, DNxIO 11.2, Windows 10 x64 Pro, 2x Xeon E5-2630 v3, Quadro M4000 (431.02), 64GB RAM, RAIDdeluxe 6Gb SAS 96TB 16-bay RAID-6 [view my complete system specs]
  • Fri, Jun 26 2020 8:21 PM In reply to

    • Ondrej Azor
    • Not Ranked
    • Joined on Tue, Jun 21 2011
    • Slovenská republika
    • Posts 45
    • Points 565

    Re: Media Composer 2020.6 - FrameFlex issue (sort of continued from 2020.5)

    I had no problem with FrameFlex in 2019.11, but after updating MC to 2020.5 and 2020.6, various issues appeared unfortunately. And the projects that worked well in 2019.11 don't work correctly anymore. At least I can use a workaround at the moment in 2020.6 (there were issues I was not able to solve at all in 2020.5).

     

    DNxIO w. MC2018.11 on HP z820 [view my complete system specs]
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