Latest post Fri, Jul 11 2008 1:54 PM by BarkinMadd. 2 replies.
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  • Fri, Jul 11 2008 11:45 AM

    • BarkinMadd
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    • Ontario, Canada
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    Import of QT w/ DNxHD codec looks washed out

    As a new user, I'm just trying to get a handle on some workflow techniques. In this case, I was doing some work in AfterEffects. I decided to render using the QT movie / DNxHD codec (the source was a QT reference movie exported from MC 3.0).

    When I imported this clip back into MC, I found that it looked washed-out. The blacks weren't as black - a general drop in contrast is as best as I can describe it.

    I repeated this where the only thing I did in AE was to export the QT Ref without any changes - just put the QT ref in a composition and then rendered it back out to a new file using the DNxHD codec.

    Using the QT player I compared the QT Ref to the new file and they looked comparable (not washed out). I then imported the new file into MC and found that the import looked washed-out.

    Something about the way MC imports the QT mov w/ DNxHD codec changes the levels - is there some setting I need to adjust or am I totally off my bean?

    Thanks

    MC 2020.8 | QT 7.7.9 | Continuum 2020.5 | Sapphire 2020.5 | Mocha Pro 2020.5 | Titler Pro 7.3 | Windows 10 Pro x64 (2004) | System: Asus x299, i9-7940X... [view my complete system specs]

    Steve

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    www.nelliedogstudios.com

  • Fri, Jul 11 2008 12:05 PM In reply to

    • Moses.M
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    Re: Import of QT w/ DNxHD codec looks washed out

    Did you check your import settings? Import -> Options -> Image -> Color Levels. If you used RGB (0-255) color levels in AE you've got to select this option. If you rendered the movie within the 601/709 colorspace, take this setting.

    If your video looks washed out, try to import the QT using the 601 setting....

    Regards M.

    HP xw8400 - 6GB RAM | W7 64 bit | MC 5.5.2 | Adrenaline with DNxcel Sony Vaio SB1Z1 - 6GB Ram | W7 64 bit | Blackmagic Design Ultra Studio SDI [view my complete system specs]
  • Fri, Jul 11 2008 1:54 PM In reply to

    • BarkinMadd
    • Top 25 Contributor
    • Joined on Fri, Nov 4 2005
    • Ontario, Canada
    • Posts 4,771
    • Points 62,135

    Re: Import of QT w/ DNxHD codec looks washed out

    Wow - looks like I picked the wrong week to give up drinking...

    This is most unexpected. I was under the impression that the 'Image' setting was for importing images (bmp, psd, etc.) - I had no idea that it governed the interpretation of the color, etc. of video.

    Sure enough, it was set the default RGB whereas the DNxHD codec was set to 601/709 (of course).

    Switching the image setting to 601/709 had two effects. First - MC warned me that my import resolution was different (project was set to TR-145 , HDV raster) whereas I was exporting and working with square pixel 145 (1920x1080). I told MC to keep the 1920x1080 resolution - the clip imported and now looks (to my eye) exactly like the orginal source when viewed full-screen.

    Thanks so much for your help!

    MC 2020.8 | QT 7.7.9 | Continuum 2020.5 | Sapphire 2020.5 | Mocha Pro 2020.5 | Titler Pro 7.3 | Windows 10 Pro x64 (2004) | System: Asus x299, i9-7940X... [view my complete system specs]

    Steve

    ______________________

    www.nelliedogstudios.com

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