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Posted by Paul Hoadley on 01/27/06 11:34
On 2006-01-27 09:45:44 +1030, "Smarty" <nobody@nobody.com> said:
> I'm really not so sure the disk is indeed the bottleneck.
>
> Since normal DV capture has exactly the same data rate as HDV, and is
> captured correctly by Paul's system, I am much more suspicious of the
> CPU and / or perhaps the bus speed of his PC.
Good point.
> The codec has a lot more work to do in encoding the incoming HDV
> stream, and this is where the CPU and bus are probably the issue.
It certainly looks like this is the issue for me. I downloaded the
free trial of the Aspect HD plugin by Cineform, and although I've only
had time to do a bare minimum of testing, this seems to allow my 2.8
GHz P4 to capture HDV without a problem. Presumably the codec in
Premiere Pro's 1.5.1 update is more of a CPU hog. (Of course, it may
well be the case that it's also a better codec, but at this point I'm
happy just to capture the HDV at all.)
> I've been doing HDV editing on both the PC and Macs for quite some time
> now, and some of the capture software works a lots better and does
> permit non-real time buffering if the CPU can't keep up.
>
> As Paul indicates, iMovie HD on the Mac does an amazing job, and
> slower, older Macs like the G4 / G5 laptops or my wife's MacMini seem
> to capture HDV and edit it quite adequately.
I assume that iMovie HD is buffering the data to disk while it encodes
in the background---that is, when it claims to be capturing at "1/2
real time" speed (or slower), it's not actually reducing the transfer
rate from the camera. I don't see an option to make Premiere Pro 1.5.1
do this, though I assume that the Aspect HD plugin is doing just this.
> The closest consumer HDV editing program I have found which seems to
> work well on slower, older PCs in Ulead's Video Studio 9.
>
> Cycberlink's new version of Power Director is also quite good in this
> regard, but is a bit buggy, as is Ahead Nero Vision in its' latest HDV
> editing and capture.
>
> If someone is forced to use a slow PC, then I would stick with Ulead
> VS9 despite its' limited feature set. Like iMovieHD for the Mac, it
> works well and quickly.
Thanks for the advice.
--
Paul.
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