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Activity Forums Apple Final Cut Pro Legacy What’s up with FCP file structure?

  • What’s up with FCP file structure?

    Posted by Bob Roberts on December 4, 2008 at 4:40 pm

    I’m an editor who works primarily in music videos, documentary, and reality television. For long-form, I usually break the show down into multiple .FCP project files (i.e. one for “interviews”, one for “b-roll”…) which saves me from getting outrageously large .FCP sizes.

    Well, my last project started off as a “sizzle reel” and grew into a full-length pilot episode with piles of footage…all different codecs, sizes, frame rates, and a countless number of sequences and multiclips. It got to a point where, predictably, performance suffered as my .FCP project file approached 400MB!!!

    After going through and exporting XMLs of my bins then creating .FCP files, like I normally do for long-form (i.e. one for “interviews”, one for “b-roll”…), guess how big my resultant .FCP files added up to?

    9MB.

    400MB to 9MB just by resaving? What on earth is the .FCP file structure doing?

    Martin Baker replied 17 years, 9 months ago 4 Members · 3 Replies
  • 3 Replies
  • Shane Ross

    December 4, 2008 at 6:02 pm

    Every sequence you make…adds to the file size. Have a large sequence, then duplicate it to make changes, then the file size REALLY goes up.

    STILLS, TEXT, SPEED CHANGES…none of those have actual media, they are all contained in the system file. Have lots of those? Then you have a larger project. Duplicate a sequence with a lot of those…whooboy.

    The amount of clips you have makes the project larger too.

    Shane

    GETTING ORGANIZED WITH FINAL CUT PRO DVD…don’t miss it.
    Read my blog, Little Frog in High Def

  • Sean Oneil

    December 4, 2008 at 9:02 pm

    That doesn’t explain why a single project is 400MB, while all the same content (sequences, bins, clips) separated into different projects creates a grand total of only 9MB all together. I’ve always been suspect of large FCP projects myself.

    Bob asks a very good question. I’d love it if someone knew the answer. Maybe Andreas Kiel will read this.

    Sean

  • Martin Baker

    December 4, 2008 at 10:04 pm

    The question is a rhetorical one. The FCP project file format is private to Apple and not open to third parties. Only a handful of Apple employees will know the answer and they can’t talk.

    Martin
    Digital Heaven, London UK

    Unique plug-ins and tools for Apple Pro Apps
    ———-
    Avid2FCP
    For Avid editors learning FCP

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