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H.264 video file: Highlights blown in "Quicktime Player" / not blown in "Preview"

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  • Philipp DW
    replied
    Got it.

    Very helpful info under the first link.

    Thank you both!

    Leave a comment:


  • Jim Feeley
    replied
    Originally posted by Philipp DW View Post
    Anything that needs to be done on my side?

    Just because I am curious now: What exactly is the QTP gamma shift issue?
    The first link I give makes some suggestions on what you can do. (I'm sure you can find Resolve-centric blogs and videos, too).

    The second goes into plenty of detail about the basic issue...

    Leave a comment:


  • Philipp DW
    replied
    Thank you very much, Jim!

    Perfect.

    I kind of feared I need to tell my clients to stay away from QTP now...
    Good. Will do!

    I searched the forum but couldn't really find anything.

    Thanks everyone!

    Problem solved, and your help is greatly appreciated.

    Philipp

    Leave a comment:


  • Philipp DW
    replied
    I checked it with VLC player and everything looks perfect.
    Thanks for your quick reply.

    Anything that needs to be done on my side?

    Just because I am curious now: What exactly is the QTP gamma shift issue?

    Interesting.

    QTP also FREAKED me out a couple of times, when it drastically changed the overall colour of a video as long as the play/pause/transport field is visible. It changes back when the control field disappears. But: How can Apple do this to us??
    Haha.

    Leave a comment:


  • Jim Feeley
    replied
    Sounds like Quicktime Player Gamma Shift. Longtime issue,

    Here's a quick overview that's handy.
    https://dominey.blog/2021/01/24/why-...e-gamma-shift/

    Here's a long (and old) explanation of what's going on. It's probably still current.
    https://vitrolite.wordpress.com/2010...ime_gamma_bug/

    Super-short version: Stay away from the Quicktime Player app...and the tricky part: make sure your colleagues and clients do, too.

    Leave a comment:


  • Imamacuser
    replied
    How does it look when you open it up in VLC? This might be the QuickTime gamma shift issue.

    Leave a comment:


  • H.264 video file: Highlights blown in "Quicktime Player" / not blown in "Preview"

    I noticed something weird.

    After exporting a video file from Resolve 17 (HD, H.264, 100000 bitrate) and opening the video with "Quicktime Player", highlights look horrible and blown out.
    On a Macbook Pro as well as on a Mac Pro 2019.

    But: They actually are not blown out, as in Resolve everything is perfectly fine (Aces workflow, target: Rec709).

    When opened with "Preview", everything is also fine - just as in Resolve 17.

    This leaves behind a little insecurity that I don't like or need.

    Does anyone know why this might happen?
    Or how to change it?

    Thank you very much! And best regards.

    Philipp
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