DVL-Digest 1619 - Postings: Index Cubase... - (2) SATA etc Cubase... - "Perry Mitchell" From: Doc Del Jon Burkhart wrote: > > Hi Doc, > Are you sure the drift is not coming from the XL1 cameras? I'm sure. If that was the case then I would see the drift with the original captured wav files. As it is, I can put the original captured wav file on Audio 1 and the wav file from Cubase on Audio 2 and see the very pronounced drift between the two. Only two(from 1 camera) of the of the six original files are 32k, 12 bit. The rest were captured at 48k. Cubase... - "Perry Mitchell" From: Doc Del I'm sure all that you have said is true but I'm not sure all of this is applicable in this case. Here is an example of what I am talking about.... The entire audio stream is roughly 56 minutes long. I can export a wav file from any of the editing programs that I have on hand and bring them back in with no drift what-so-ever. However when I import these same files into Cubase and export them here is what I see: at the 6 sec mark there is roughly 1 sec drift from the original wav file. At the 5 minute mark there is a 26 seconds drift. At the 50 minute mark the is a 4 1/2 MINUTE drift. I don't think changing the speed of the track would change this track but I could be wrong and it wouldn't be the first time that I am. I will give it a try... Thanks Perry! Doc Del Perry Mitchell wrote: > > AFAIK the problem with the old XL1 is the sample rate is actually 48,008Hz > rather than exactly 48,000. This doesn't matter in the original DVStream > file because the audio is multiplexed with the video (and so cannot drift) > but the problems start when the DVStream is turned into a QT movie (as in > CS3) and the audio and video are in essence separate movies. If the audio > movie is forced to run at a different speed to conform the sample rate to > exactly 48k then it will clearly drift wrt video. What needs to happen is > the audio has to be resampled so that it can run at the correct speed with > an exact sample rate. This happens automatically in Final Cut Pro but I am > sure that there is a way of doing it with your available tools. > I am not familiar with Cubase, but is it not possible to simply change the > speed of the track so that the duration exactly matches the video track? > Perry Mitchell SATA etc - "Perry Mitchell" From: Mike Charles, I'm in the market for a new firewire HD enclosure and found your comments on firewire 400/800 interesting. I've had some issues with firewire 400, particularily with XP, which I've solved so far by sticking with Windows 2000. However with Premier Pro being XP only, this will shortly have to change. Would you recommend spending a little extra and getting a firewire 800 enclosure (and 800 firewire card)rather than firewire 400? (diese posts stammen von der DV-L Mailingliste - THX to Adam Wilt and Perry Mitchell :-) [up] |
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