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1200a deck issues?
I am capturing DVCPRO HD footage shot on the HDX900 in 720p 23.98 over firewire from my 1200a deck to my laptop with the newest version of FCP. I have captured over 30 tapes in the last few weeks, and now that I went out onto the road shooting and capturing I have come up with a little problem.
When I open my capture window in FCP and click the ‘preview’ tab for the audio (so I can hear it) it comes thru all crackly… strange… so when I go to listen to the clip I’ve just captured in FCP, the audio is fine, but it seems to be out of sync by around 9 frames… I have changed laptops to another G4 Powerbook that I have, and it’s still doing the same thing… I am thinking it’s the firewire board in the 1200a deck? I have checked the playback offset etc, but even when I play the quicktime movies outside of FCP they are out of sync too.
Can anyone help?
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5 Replies
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[morgster] “When I open my capture window in FCP and click the ‘preview’ tab for the audio (so I can hear it) it comes thru all crackly… strange…”
This is because the audio coming thru isn’t full quality, it is preview quality. This means that the levels might be hotter than usual, and too much for the laptop speakers. Or something. I know that this happens to me too.
[morgster] “I have checked the playback offset etc, but even when I play the quicktime movies outside of FCP they are out of sync too.”
YEP. Captured via firewire the audio typically is ahead of video by 2 frames. But I noticed that when I captured on my Powerbook G4, audio was as far off as 8 frames ahead of video. And I was using a PCMCIA firewire adapter. The solution is to slip the audio in the timeline as you lay down your clips. A pain, but…
You will not get this audio issue if you captured with a capture card via HD SDI. But that isn’t available for a laptop yet.
Shane
Littlefrog Post
http://www.lfhd.net -
[morgster] “I have changed laptops to another G4 Powerbook that I have, and it’s still doing the same thing…”
G4 Powerbooks are not really suitable for DVCPro HD capture as they do not fully support the 100mbps format during ingest. We learned that here when we started working on Good Eats and I did some test captures with my 17″ Powerbook. The video quality was degraded and the audio is not in sync. You can edit DVCPro HD via a G4 laptop, but you should not capture via those laptops.
The new MacBook Pro’s work fine with DVCPro HD.
Walter Biscardi, Jr.
https://www.biscardicreative.com
HD Editorial & Animation for Food Network’s “Good Eats”
HD Editorial for “Assignment Earth”Read my blog! https://blogs.creativecow.net/WalterBiscardi
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Thanks… That’s what I figured once I got back to the edit suite last night (MacPro 3.0GHz) and everything was fine.
Does that mean any footage that I captured that may have been in sync will have video degraded?
Thanks for all the help… I guess it’s time to invest in a Macbook Pro.
Cheers
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[morgster] “Does that mean any footage that I captured that may have been in sync will have video degraded?”
In my testing on my 17″ Powerbook, that’s what we found. It was better than DV, but worse than DVCPro HD with some weird compression artifacts.
Walter Biscardi, Jr.
https://www.biscardicreative.com
HD Editorial & Animation for Food Network’s “Good Eats”
HD Editorial for “Assignment Earth”Read my blog! https://blogs.creativecow.net/WalterBiscardi
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all of my footage captured via P2 should be fine though, correct?
SM
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