4 Replies Latest reply: Jan 23, 2011 8:28 AM by Jerry Hofmann
djanthonyw Level 1 (15 points)
I'm trying to speed up the video to match audio, but whenever I do Final Cut plays it for about a second and then stops playing?

MacBook Pro, Logic Studio, iPhone, Mac OS X (10.6.4)
  • Jerry Hofmann Level 9 (53,940 points)
    You likely need to render the speed change before you attempt the playback. Are you rendering first?

  • djanthonyw Level 1 (15 points)
    Well I used to just adjust it and it would play on my Mac Pro before. I don't remember needing to render the change to see the results, it would just play. I'm on a Macbook Pro now though, with the same speed drive 7200 RPM.

    Is there a formula for adjusting video to the same amount as audio's BPM?

    For example, if you have audio that is sped up from 105 BPM to 120 BPM, and the video matches the original 105 BPM, so now it needs to be adjusted to 120.
  • Studio X Level 7 (27,030 points)
    Is your media stored on the system drive? If so, that is likely the source of the problem. The system drive has enough to do with out having to horse around the media as well. Get a FW800 (or esata if you have the card34 slot) drive to use as your media capture/scratch drive.

    The speed up is a simple mathematical relationship.
    Divide 120 by 105. That will tell you how much faster the 120 is in %. Use that same % in FCP.

  • Jerry Hofmann Level 9 (53,940 points)
    Well, a Mac Pro has a lot more power than the laptop, that's why the render is needed for the laptop. More powerful CPU's, more powerful graphics too...

    Do the math on the difference of the speed changes... if you want from 105 to 120, that percentage change is about 114%... that should be the same percentage used with the video.