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Audio jittery after hd digitizing
Acquired in HD Video and Audio. The video plays back fine but the audio is jittery. If I play back this same aoudio in quicktime it is also jittery. If I acquire in SD there is no problem. Tried 48000, 44000, 32000,…no difference.
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14 Replies
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Some more details would be helpful. Which hardware? How do you acquire? Which connections? What deck and format? What is your source audio sample rate? What version of Media 100 do you use? What OS and QuickTime version?
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Re:audio jitters:Mac 8 core. 2 gigs ram. OS leopard.Ihave digitized to internal drives and exteral. Tried 2 different cables. Digitizing from my sony camera firewire to firewire Media 100 producer version 13 software only, latest quicktime.
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[Andrew Hulsmeier] “Digitizing from my sony camera firewire to firewire Media 100 producer version 13 software only, latest quicktime.”
You should update to Media 100 V 13.0.3
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[Andrew Hulsmeier] “Quicktime 7.6.2 Acquire DVCPro HD to Media 100 HD 10 bit compression “
You mean HDV input to Media 100 HD codec? What happens if you try a different codec?
What is the audio sample rate on your HDV tape?
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OK Downloaded new version 13.0.3 no luck Audio still jittery.
Here is my configuration again.I am digitizing from a sony HVR-Z1U
in HDV. Device control FirewireHD
Audio in put 48000 or 44000 Firewire HD
Computer Mac Pro G5 2×2.66 GHz Dual coe Intel Xeon
Memory 2GB
Footage destination Lacie D2 Quadra Firewire 800
Quicktime 7.6.2 Acquire DVCPro HD to Media 100 HD 10 bit compression
Audio is still jittering from Media 100 and quicktime.
As I am digitizing audio sounds fine. -
Mr Peters
I have tried all the variables. The camera records in 48000 audio
while in HD mode. Take it out of HD from the camera to sd and it records fine. I will try another camera for the output. -
One thing you could try is to downgrade to QuickTime 7.6 (or QuickTime 7.5). I heard that maybe QuickTime 7.6.2 is causing this problem.
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Hi Thanks
I have been trying a different camera but it wont play the tapes from the sony. I have recorded HD on another camera JVC GY-HD 110. Audio still jitters and now I have a green screen coming a quarter of the way up the screen from the bottom. Testing with live camera and recorded material…Installing quicktime 7.5 ???HOW
Thanks
Andrew -
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Andrew,
I just want to add my support for this idea. Getting off of QT 7.6.2 will almost CERTAINLY “fix” your problem for now. Of course, it’s not a long-term fix. We hope to have an update that is compatible with QT 7.6.2 made available very soon.
As for backing up QT, you don’t have a lot of options to back up TO.
It seems that Apple has pulled v7.6 from their servers. Perhaps you (or a friend) can find a QT 7.6 update disk image on a Time Machine drive. Failing that, your only other option is QT 7.5 or 7.5.5 but remember…
ONLY USE QT 7.5.5 IF YOU DO NOT NEED TO USE THE MEDIA 100 I CODEC OR THE MOTION JPEG-B CODEC.
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