[AG-TECH] Any more H.264 news?

[Andrew Ford]

Andrew,

That does look like vic is capturing at the wrong resolution. Can you change
the capture size, with the small/normal/large buttons (under Encoder) in the
vic menu?

--Andrew

On Mon, Apr 21, 2008 at 6:32 AM, Andrew Rowley <
Andrew.Rowley at manchester.ac.uk> wrote:

>  Hi,
>
>
>
> I have tried firewire capture on windows and get similar results – I just
> get a kind of set of lines (see attached image).
>
>
>
> I have a feeling that this is due to vic assuming that the camera source
> is a standard size (e.g. 352x288) when it isn't.  It looks like it is
> picking up an image from the camera (it changes when I move around in front
> of the camera) but it is only using some of that image (I think).
>
>
>
> This was using a Sony MiniDV camera.
>
>
>
> Andrew :)
>
> ---------------------------------------------------------
>
>   Andrew G D Rowley
>   Senior Development Officer
>
>   Research Computing Services
>   The University of Manchester
>   Kilburn Building, Oxford Road
>   Manchester, M13 9PL
>
>   t :  +44 (0) 161 275 0685
>   e :  Andrew.Rowley at manchester.ac.uk
>   w :  www.manchester.ac.uk/researchcomputing
>
> ---------------------------------------------------------
>   ------------------------------
>
> *From:* owner-ag-tech at mcs.anl.gov [mailto:owner-ag-tech at mcs.anl.gov] *On
> Behalf Of *Andrew Ford
> *Sent:* 18 April 2008 21:21
> *To:* Douglas Kosovic
> *Cc:* ag-tech
> *Subject:* Re: [AG-TECH] Any more H.264 news?
>
>
>
> On Wed, Apr 16, 2008 at 8:54 PM, Douglas Kosovic <douglask at itee.uq.edu.au>
> wrote:
>
> UQ Vislab vic doesn't do any transcoding from DV (or HDV) firewire devices
> to other codecs, so if the codebase was merged as it stands now, it wouldn't
> do what you are trying to do anyway.
>
>
> Well, doing raw DV without transcoding would be fine (if it were on both
> platforms), since we can spare the bandwidth - that's what we're already
> doing via the ExtendedVideo services on Windows, but we'd like to be able to
> move on to something more cross-platform.
>
>
> Have you tried using DV4Linux so that your Camcorder can be seen as a V4L
> device? I haven't tried it myself.
>
>
> Interesting, I'll have to try that out. Would vic theoretically be able to
> transmit 640 (or 720)x480 video from a V4L device?
>
> As for the flashing verticle line artifacts on Windows, I don't seem them,
> but I was using a quad-core 2.6GHz Xeon.
>
>
> We've seen it here on a couple of different systems - a Dell w/ a
> dual-core + hyperthreading 3.46Ghz CPU, and Suns with 2x dual-core 2.2Ghz
> Opterons - so I doubt it's CPU-related. Can anyone else chime in if they've
> tried the firewire capture on Windows?
>
> --Andrew
>
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