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Very strange audio problem 48 khz vs 44 khz
Hello.
I’m having a very strange problem with some material captured on a Panasonic ag af 100. I have “logged and transferred” it into my fcp using AppleProRes 422 HQ.
When I want to see my clips in the viewer it is played, at first with no sound, then suddenly (after half a second) it it played, but out of sync. Sometimes it is played almost correct in the first second, then it drifts into the opposite of delay. The sound is played before the mouth moves.Another issue is when I drag the media into my sequence. When I play it a “warning dropped frames” comes forward and the audio will not be played. If I tjek out the warning, and just keep on playing my sequence, the same problem occurs as mentioned above with the viewer. BUT then. If i set the audio to 44.1khz in the sequence settings it works fine. It doesn’t make sense to me.
The material is recorded in 48 khz so it’s a bit strange. If i play it in QT and tjek out the “movie inspector” it says 48khz, and it plays perfect.!I have tried to open some of my past projects, and the same problem occurs even though it wasn’t a problem during the editing back then.
So something tells me that I have messed something up i fcp.
I have tried to delete my preference files, but that didn’t help.I have recorded in 1080/25p
My sequence settings is 1920×1080, AppleProRes 422 HQ, frame rate 25, audio settings 48 khz, 16-bit, channel grouped.I’m editng on a macpro 2 x 2,4 Quad-Core Intel Xeon, 14 GB ram, so i assume it isn’t a hardware problem. I have FCP version 7.0.3.
Can anybody help me please?
Best regards
Christopher -
4 Replies
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What audio mode did you record in?
The PH mode supports uncompressed 16-bit LPCM 2-channel digital audio recording for
high-quality sound in addition to Dolby Digital 2-channel audio.
The HA/HE mode employs Dolby Digital 2-channel audio recording only.Cheers
Alexander -
Hello Alexander.
Thank you for your reply.
I recorded in the PH 1080/25p mode.
The strange thing for me is that my older fcp projects is affected by this audio delay now, even though it wasn’t a problem during the editing back then.– Christopher
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[Christopher Thuesen] “my older fcp projects is affected by this audio delay now, even though it wasn’t a problem during the editing back then.
“Christopher, it might be easier than we think, try trashing the FCP prefs.
Cheers
Alexander -
[Alexander Kallas] “Christopher, it might be easier than we think, try trashing the FCP prefs.”
I have already tried that. Four times now. Finally I uninstalled FCP and installed it again. That worked. As far as I can se is it some sort of bug or intereferrence between fcp and my macpro.
Hope it doesn’t happen again.Thank you for your replys.
-Christopher
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