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dropframe non-dropframe sync issue
I got an aiff file (mixed sound) of which the waveform looks perfectly sync with non-mixed audio files.
But when played back the sound is slipping slowly out of sync. Sync in the beginning and at the end (after 75 minutes)
the sound is approx. 4.11 seconds out of sync. The difference between 29.97 and 30 frames a second.
Is there anyone that knows a solution ?
The sequence is set 29.97 so is the footage. I’am living in PAL land, so I’ve not much experience with this s!@#.Ren
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2 Replies
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All video runs at 29.97 fps in NTSC land. The drop/non-drop thing refers to the timecode numbers themselves…that it. with drop frame timecode, numbers are dropped every couple minutes in order to insure proper timing, since video runs slightly slower than 30fps.
Something else is going on. What is the audio rate of the clip? 44.1k? 48k?
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Where did the “mixed sound” file come from? i.e. what’s it’s source, and post more about how and where this file came from and it’s frame rate… This isn’t due to a drop/non drop TC problem. All NTSC is still 29.97 whether it’s drop frame code or not. TC numbering is different between the two formats, but the frame rate is the same between them.
Post which versions of OS, QuickTime, and FCP you are running, and have you installed all the latest drivers for the Kona and the X Serve RAID? If the audio file’s frame rate is different, it’s a different story…. you’ll need to get one that’s 29.97 fps drop frame or not… if the file’s frame rate is 30fps, then my guess is that this is the problem.Jerry
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