• Apple Final Cut Pro Legacy

  Rendered footage not playing back smoothly

  Posted by Mike Procyk on May 27, 2009 at 6:57 pm

  I’ve used Snapz Pro Z to screen capture some web video and saved the captured files in both uncompressed and animation codecs. I then put the footage into my FCP timeline (DV), rendered them, and the footage still chokes. I see artifacts during playback that aren’t visible when I stop on a frame and if I click to move move the playback head forward a few minutes, it takes several seconds to update.

  I thought that rendering creates new footage in the codec of the timeline, so why should I still have an issue?

  Mike Procyk replied 17 years, 3 months ago 3 Members · 6 Replies
• 6 Replies

• 

  John Pale

  May 27, 2009 at 7:25 pm

  It does. What are you using for drives?

  Also, if there is audio, take a look at the audio track. Make sure it’s not some waxy sample rate, compressed, or mismatched with your sequence audio in some way.
• 

  Mike Procyk

  May 27, 2009 at 8:50 pm

  I have an extra internal drive. It works fine for everything else. There is other footage in this timeline that plays back correctly. The audio is 16 bit, 44.1 mono.
• 

  Michael Gissing

  May 28, 2009 at 1:04 am

  Animation is not an editing codec so will need render. Uncompressed is good if your drives are fast enough, but why then use a DV sequence? Try to have your sequence and files matching, so an uncompressed sequnece is what you want

  Audio should be 48khz.
• 

  Mike Procyk

  May 28, 2009 at 12:29 pm

  The sequence is DV because other footage being used in it is DV. I know the animation codec needs rendering, and it has been rendered. The problem is it doesn’t playback well after rendering.

  Does the render not also change the audio rate? Could that be the problem?
• 

  John Pale

  May 29, 2009 at 12:37 am

  [Mike Procyk] “oes the render not also change the audio rate? Could that be the problem?
  “

  No. It does not, unless you tell it to. FCP will try to handle it in realtime, but not always do a good job.

  Also, if the audio is compressed in some way and not PCM, this will cause problems even if you render it.
• 

  Mike Procyk

  May 29, 2009 at 1:05 pm

  Thanks, I wasn’t aware that I needed to bring in PCM audio.

  I’m assuming that if I did bring in 44.1 PCM and rendered, it would convert it to 48 (if that’s what the timeline is). Is that correct? Of course, from now on, I’ll just do it before import.

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