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Forums Apple Final Cut Pro X “Auto” audio crossfade with transitions behavior

  • “Auto” audio crossfade with transitions behavior

     David Eaks updated 10 years ago 2 Members · 4 Posts
  • David Eaks

    July 14, 2011 at 2:36 am

    Well, I finally got around to messing with FCP X. A customer brought me the “footage” from a wedding, one of the guests shot the whole thing on an iPhone 4… (Do I hold it vertical? or Horizontal??) It’s been good practice for learning the new key framing methods etc.. I’m actually liking most of it so far.

    Anyway, I’m trying to figure out whats going on with the audio crossfade that is automatically applied with video transitions. Please see screen grab below.

    Sometimes, seemingly regardless of handle length and/or audio enhancements, the audio “cuts out” the handles of one or both clips at the midpoint of the crossfade. In the Precision Editor the waveforms are grayed out for duration of the audios handles. As clip 1 begins to fade out, the audio from clip 2 does not begin to fade in. The net effect being that the audio has a “softened” jump cut, or in other words audio 1 fades half way out then jumps to audio 2 which starts halfway faded in.

    Example of both clips affected-

    Example of one clip affected-

    In this instance it doesn’t really matter, the sound is room noise and a pipe organ but I just can’t stand not understanding something simple like this. I hope I’m just missing something embarrassingly simple that I should know already, and it’s not a bug…

  • Ray Wang

    July 14, 2011 at 6:26 am

    Not sure if this answers your question.

    1. Select the transition (e.g. Cross Fade)
    2. Go to the inspector
    3. Under transition, there is a group called “Audio Crossfade” in which you can select the Fade in Type and Fade out Type to different curves as you need. Default is +3db.


    Ray

  • David Eaks

    July 14, 2011 at 7:12 am

    Thanks for the reply Ray, +3db is fine. It’s weird, I apply a simple, default, “command-t” cross dissolve (or any other transition for that matter) but the audio doesn’t alway’s “accept” it. Rendering does not make any difference, and background rendering is off for now.

    And here’s a new one, grayed out portions of audio are first and last ~10 frames of transition. When playing back, the audio has almost no fade at all. One comes in loud too early and the other stays on too long and ends abruptly. Very strange.

  • David Eaks

    July 14, 2011 at 12:01 pm

    After following the instructions in Craig Seeman’s video “Audio Only Dissolve in Final Cut Pro X” and still getting unpredictable strange behavior, there’s gotta be something amiss.

    I think it’s a bug or corrupt project or something. In the precision editor, I slide-edit one clip back and forth a couple times and the grayed out portion suddenly came back to normal, playback is like it should be… a cross dissolve/fade.

    I started a new project, using the same footage and it is behaving now. Guess I just needed Bessie to tell X to shape up…

    If anyone is able to reproduce this and explain it to me, that would be great.

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