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sync problems

308 Views 3 Replies Latest reply: Apr 3, 2013 7:58 PM by Natalie Raichl RSS
Natalie Raichl Level 1 Level 1 (85 points)
Currently Being Moderated
Apr 3, 2013 12:11 PM

I'm using FCP 7 to edit some commercial footage sent from a client, shot with some sort of small DSLR.  It is 1920x1080, H.264 footage.  We got the final edit done, and one clip was hanging up; and looked a little jittery on playback. When I exported the movie to put into compressor to make versions for the client, that same spot froze, and seemed to knock the video out of sync,  The next shot broke up.  I replaced the shot with another, same thing.  Now the shot next to it is doing the same thing. I tried creating a new sequence, same result.  I let FCP set the sequence settings when I dropped the first clip in , so not sure if that's the issue, but I sure could use some suggestions on how to troubleshoot this.  Also trashed preferences.

  • Shane Ross Level 8 Level 8 (41,655 points)
    Currently Being Moderated
    Apr 3, 2013 12:18 PM (in response to Natalie Raichl)

    Change the sequence setting: Compressor to ProRes, and re-render.


    And never ever never never use H.264 in FCP.  FCP doesn't like will lose sync, or exports will show different footage than what is in the cut...any number of potential issues.  It is a highly compressed format not ideal for editing. H.264 and FCP are not friends. 


    ALWAYS convert H.264 to ProRes before editing. Yes, the files sizes will increase by quite a bit.


    If you want a friend for H.264 native...use Adobe Premiere. But be sure to get lots of RAM and a high end graphics card that enables the Mercury Engine so that Adobe Premiere can deal with it.  FCP solves the H.264 issue by making you convert it to a workable format.  Adobe makes you throw resources at the issue.  Although those resources do a good job.

  • darbypsnm Level 3 Level 3 (720 points)
    Currently Being Moderated
    Apr 3, 2013 12:20 PM (in response to Natalie Raichl)

    What are your sequence settings?


    Apple does not recommend using H264 files in FCP7.  We always convert all H264 to ProRes.

    You can edit with H264 but there are more posts about problems with editing H264 in FCP7 than not.


    If the footage in your sequence is H264 I would consider converting the H264(at least the problem shots) to a flavor of ProRes. I would personally use PR422.


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