10 bit Cineon files to Quicktime

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  • #201346
    ddinisco
    Participant

    Has anyone had any luck importing 10bit Cineon files into Quicktime? We have downloaded a QT converter from a company called GlueTools, and although it does seems to work, there is a lot of banding on the gradients that are not present in the original Flame 10bit file. If I reimport that same Cineon file into Flame there is not banding. A difference matte between the Cineon and the orginal exported frame looks perfect on the Flame. One we import the Cineon into QT, it looks really bad. We are view QT via Blackmagic HD Extreme Declink card (component out)

    The workflow is Flame to Quicktime to D5. We don’t have a D5 deck in-house, but a local dup facility does, so we are trying to simply send them a Final Cut project of our master.

    Thanks in advance,
    David

    #214619
    cyril conforti
    Participant

    hey dave,
    right now, we are adding 10 and 12 bit capabilities into shrink.quicktime and tether.

    check it out, http://www.shrinkquicktime.com
    i can notify you when we release a that version, should be in the next few days.

    thanks,
    alan

    ddinisco wrote:
    Has anyone had any luck importing 10bit Cineon files into Quicktime? We have downloaded a QT converter from a company called GlueTools, and although it does seems to work, there is a lot of banding on the gradients that are not present in the original Flame 10bit file. If I reimport that same Cineon file into Flame there is not banding. A difference matte between the Cineon and the orginal exported frame looks perfect on the Flame. One we import the Cineon into QT, it looks really bad. We are view QT via Blackmagic HD Extreme Declink card (component out)

    The workflow is Flame to Quicktime to D5. We don’t have a D5 deck in-house, but a local dup facility does, so we are trying to simply send them a Final Cut project of our master.

    Thanks in advance,
    David

    #214620
    g kenshin
    Participant

    What card are you using to play out of your mac?

    Where I work we have a Blackmagic card and it came with a program called framelink, which allows us to convert QT files to DPX and dpx sequences to QTs (by simply copying the dpxs into a folder) – Can’t remember, if I’ve tried, but I’m sure cineons should work just as well….

    #214621
    peter duncan
    Participant

    Hi David

    ddinisco wrote:
    We have downloaded a QT converter from a company called GlueTools, and although it does seems to work, there is a lot of banding on the gradients that are not present in the original Flame 10bit file. If I reimport that same Cineon file into Flame there is not banding.

    You mention banding, but are the images viewed on the Mac lighter than when viewed on the Flame (greyer blacks)? If so, you may be facing a “classic” Mac gamma issue. Macs presume that all video images have an intrinsic gamma value set to 1.8 as opposed to 2.2 on Flame. This could make banding issues more apparent on the Mac.

    To test this you should export your cineon images from Flame with a gamma LUT of 1.8/2.2 (which should make them look darker in Flame) and see if the images appear correct on the Mac. Note that if you wanted to re-import these images into Flame, you should apply an inverse LUT of 2.2/1.8…

    hope this helps.

    #214622
    Pankaj Pratap
    Participant

    Hi!

    I am the author of the Cineon/DPX components for QuickTime. If you still have the frames, could you send me a sample? A screengrab from a tool such as Shake, and a DPX frame in QuickTime, would be handy too.

    Also, if you know your LOG/LIN conversion settings in Flame/Inferno, that would be helpful too.

    My contact info is on my website.
    Thanks!

    bob..

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