8 Replies Latest reply: May 25, 2012 8:27 PM by JD Marlow
JD Marlow Level 1 Level 1 (10 points)

Hi everyone,

 

This is a new problem I'm experiencing.  It's not something I've ever seen before in FCP 7.

 

I'm working with ProRes 422 HQ material (1920x1080, 23.98 fps).  Everything looks great in FCP 7 while I cut.  I export a self-contained QT (same as source) and I find that a number of clips in the resulting QuickTime have this issue where the last one or two frames of the shot there is a color shift.

 

It's not consistent and only happens in certain places.  But I can't seem to figure out what is causing it.  Could this be a FCP 7 / Lion 10.7.3 bug (PS that's the OS I'm running)?

 

Things you should already know:

the source clips are fine - I've checked them

there are no color corrections or filters applied to any of the clips in FCP

they look completely fine as rendered media in the FCP canvas window

I only see this playing back in QT player 7 and X.  In MPEG streamclip there is no color shift but there is a strange jump in the video at the same spot.  Almost like a little video hit. 

 

hodson1.png

hodson2.png

 

Has anyone else experienced anything like this?

  • 1. Re: FCP 7 ProRes 422HQ Export / 2 frame color shift
    Michael Grenadier Level 7 Level 7 (20,125 points)

    do you have any strange programs installed?  Is it only happening in one sequence?  If so, try copying the contents of the sequence to a new sequence.  You might also try resetting the compressor in your sequence settings (change it to something like animation and then back).

     

    You might try applying the broadcast safe filter to see if there's something out of spec in the material.

  • 2. Re: FCP 7 ProRes 422HQ Export / 2 frame color shift
    JD Marlow Level 1 Level 1 (10 points)

    Hi Michael,

     

    Thanks for the response.  No strange programs that I can think of.  I did just install something called Aunsoft MTS converter last week to help transcode some problematic AVCHD footage that Log & Transfer couldn't handle.  Maybe I'll uninstall that and see if anything is affected.

     

    I'm seeing it in multiple sequences that I export so I don't think it's a matter of moving the material around.  Thanks for the good ideas though - I will try the broadcast safe filter as a test.

  • 3. Re: FCP 7 ProRes 422HQ Export / 2 frame color shift
    Michael Grenadier Level 7 Level 7 (20,125 points)

    Have you checked the quicktime file on another computer?

     

    You said in your original post "they look completely fine as rendered media in the FCP canvas window"

     

    If there are no filters applied, why is it "rendered media?"  Or am I just obsessing on semantics?

  • 4. Re: FCP 7 ProRes 422HQ Export / 2 frame color shift
    JD Marlow Level 1 Level 1 (10 points)

    I have not looked at the same file on another computer, no.  But I will try that as well.  It's only "rendered" media because some parts have title overlays, some are multiclips originally that require render from preview quality if I don't collapse the multiclip, etc.  I promise there are no filters on the clips themselves, though.

  • 5. Re: FCP 7 ProRes 422HQ Export / 2 frame color shift
    Michael Grenadier Level 7 Level 7 (20,125 points)

    If you want to send me just a short excerpt with the problem, I'll check it on my system.  My email is in my profile.

  • 6. Re: FCP 7 ProRes 422HQ Export / 2 frame color shift
    JD Marlow Level 1 Level 1 (10 points)

    would be glad to.  I just don't see your email in your profile...maybe I'm missing something.  Anyway, I am uploading the clip here (it will be up in 10 minutes)

     

    http://www.jdmarlow.com/reference

     

    test.mov is the only file in the directory to download.  It's frames 18 and 19 that are the problem if you're looking in Quicktime.  Look at the grass on the left and right sides of the frame -- there is a noticeable shift in color.

  • 7. Re: FCP 7 ProRes 422HQ Export / 2 frame color shift
    Michael Grenadier Level 7 Level 7 (20,125 points)

    were you signed in to the apple forum?  I think you have to be to see the email in the profile.Screen shot 2012-05-25 at 5.58.40 PM.png

    Anyway, Yeah I see the problem.  Don't have a clue what's causing it.  As a test, try trimming back 2 frames to eliminate the problem frames.  Any difference in the export.

  • 8. Re: FCP 7 ProRes 422HQ Export / 2 frame color shift
    JD Marlow Level 1 Level 1 (10 points)

    I don't think trimming back does anything.  I've tried it once and also it's not in the media itself.  It is strange though that it appears this way in QT player and then like a strange bump or hit in the video when played in another app like MPEG streamclip.  Very weird!  I'm beginning to think there is just some bugginess with FCP 7.0.3 and Lion 10.7.3.  I should add that I get pretty consistent problems with crashing on my system also.  It's periodic but definitely not the most stable.  Would be great if Apple was still developing this version of FCP but I know that's just not the reality anymore.  Thanks for all your time in looking at the issue with me.

     

    Best,

    JD