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  • Apple Final Cut Pro Legacy

    Strobing Issue

    Posted by Dave Kramer on June 2, 2010 at 4:02 am

    I’m having a problem with strobing on some HD footage in FCP-7.

    I’m shooting a how to DVD

    3 cameras
    Camera 1 – Sony HDV-HVRZ1U / 1080/60i
    Camera 2 – Sony HDV-HVRZ1U / 1080/60i
    Camera 3 – Sony SR11 / 1920 X 1080/60i

    captured video:
    HDV 1440 X 1080 mpeg-2

    The captured video looks good when I view it through quicktime, but when I view it in FCP it strobes, ( values, color and sharpness pulsate). I see this on my compurter and external monitor.

    I tried converting them to a different format, “Apple ProRes 422, 1920 X 1080 60i”, This got rid of the strobing, but killed my TB hard drive.

    Q1- Does anyone know why my video was strobing in FCP and not Quicktime?

    Q2- Converting it to “Apple ProRes 422 1920 X 1080 60i” has used up almost 1,000GB making it hard to keep all the editing files on one TB hard drive. Is there a better format I can work with that wont use up so much memory?

    Q3- There are several variations of “Apple ProRes 422”. What version does iMovie convert to when capturing AVCHD files from a camcorder like the Sony SR11? I’ve looked at information about the file, but only the basic info is given.

    Thanks for any help you can give.
    ~ Dave

    Dave Kramer
    Art by Dave Kramer

    Dave Kramer replied 16 years, 3 months ago 3 Members · 4 Replies
  • 4 Replies

  • Jerry Hofmann

    June 2, 2010 at 1:07 pm

    Try using ProRes LT. It’s broadcast quality, and unless you’re doing a ton of compositing with the source material, it’s likely going to work just fine. It’s still 1920X1080, but a smaller file.

    Jerry

    Apple Certified Trainer, Producer, Writer, Director Editor, Gun for Hire and other things. I ski.

    8-Core 3.0 Intel Mac Pro, Dual 2 gig G5, AJA Kona SD, AJA Kona 2, Huge Systems Array UL3D, AJA Io HD, 17″ MBP, Matrox MXO2 with MAX Cinema Displays

  • Dave Kramer

    June 3, 2010 at 9:14 am

    Thanks for the tip. i will definitely use it next time.

    Does anyone know why my footage was strobing in Final Cut? I would still like to know.

    Dave Kramer
    Art by Dave Kramer

  • Rafael Amador

    June 3, 2010 at 9:52 am

    Where you watching the movie fully rendered and with the Canvas set at 100%?
    rafael

    http://www.nagavideo.com

  • Dave Kramer

    June 3, 2010 at 2:01 pm

    Yes, and yes, rendered and Canvas set at 100%.

    I had a similar thing happen to me a few years ago. Strobing occurred because I had my shutter speed up too high for shooting under a florescent light, but this is different.

    Dave Kramer
    Art by Dave Kramer

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