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Sync Issues
I’m having some audio sync issues on some video I imported on LP mode.
Audio starts synced by the end its a few seconds off.
I’m using FCP. From a XH-A1 recorded 30fps mode on 16:9.
Trying to figure out how to resync it. Anyone dealt with this head ach before?
The clip is 1.5 hours so quite long. Wondering the possible places it went wrong.
Any and all advice appreciated. It was recorded at 48Hz and imported at the same.
It’s frustrating the crud out of me. I used to have no trouble importing LP on my XL1s.
I’m lost on this and have a week deadline to get it ship shape.
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14 Replies
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You could try extracting the audio in QT player, taking it into Soundtrack Pro, and exporting it as 48k again. Then bring that into FCP and manually merge the clips.
Might work.
-Russ
Russell Lasson
Ridgeline Digital Cinema Mastering
Universal Post
Salt Lake City, UT -
DV LP mode has 32khz audio track.
when you finished capturing (if you captured it) it would have
given a message about it being out of synch.copy a DV NTSC easy setup and change the audio to 32k and
it should be in synch again.Or capture it through a canopus advc 110 box (analog to dv)
with the analog output of the camera into the box, that
will convert it to 48khz on the fly. -
Didn’t give me an out of sync message strangely enough. the camera records it captured at 48.
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Failing having soundtrack pro on hand, any other tools you suspect would work?
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Failing having soundtrack pro on hand, any other tools you suspect would work?
iTunes. Let us know if you need more info on how that works. OR – you could Export Audio to AIFF directly from your sequence, which gives a resampling options as well. Then just bring it back in. <
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Are you talking about DV footage or HDV footage. If it’s DV, I’m almost certain that all LP tapes are reduced down to 32K audio instead of 48K. Does HDV even have a LP mode?
-Russ
Russell Lasson
Ridgeline Digital Cinema Mastering
Universal Post
Salt Lake City, UT -
I tried re-sampleing at every frequency it would let me, nothing matched up.
On the original capture it had a few still frames, about 1 seconds worth. So I cut the still frames and, altered the speed on the audio to match the actual moving frames.
To rephrase for clarity: I cut the still frames, so then the audio ran longer then the video, tried both shortening the audio to match, no dice. Then i reset, and tried lengthening the video to match, no dice.
This still did not match the audio in fact it made it worse.
I tried matching it using the same process to all the alternate frequencies as well. Still no dice.
This is beyond weird.
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DV, in LP, set to 16:9. I tried against all other frequency options.
It’s weird FCP did not give me some kinda “hey buddy what are you trying to do here warning: AKA idiot light”
It’s a new camera a XH A1, i used to import this way No prob on my old XL1s….
…oh how I miss it.
Thanks for the input so far, this is a really weird issue.
I’m tempted to go buy a conversion box, in fact I will as soon as this job pays out…. haha till them I’m stuck on this sucky issue.
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What if you redigitize it in sections?
-Russ
Russell Lasson
Ridgeline Digital Cinema Mastering
Universal Post
Salt Lake City, UT -
Haha, Yah I tried that. 10 min sections the delay is still present.
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