UQ Vislab vic doesn't have support for IIDC/DCAM firewire cameras (like the iSight), just DV/HDV camcorders.
There is an alpha version of UQ Vislab vic available for Windows, from: http://www.vislab.uq.edu.au/research/accessgrid/software/advideo/windows .html unlike the (non-alpha) Linux version, there are issues with it, on an old Dell Optiplex GX620 (dual core 3.4GHz P4) the PC grinds almost to complete stop, on faster Intel Core-2 CPUs (including Core 2 based Xeon) the PCs have acceptable performance. The performance issue was with 576i DV which has a YUV 420 colour space, it mightn't be an issue with 480i DV, which has a YUV 411 colour space. Changing topic back to UCL-VIC. WinXP ships with an DV directshow filter by default. I captured the following screen dumps of the vic that comes with the H264VideoProducer of the AG 3 All-in-One Installer: http://www.itee.uq.edu.au/~douglask/DV.png http://www.itee.uq.edu.au/~douglask/HDV.png I selected 'Large' and 'MPEG-4, as you can see, there are no white vertical lines with either DV or HDV sources, but that could be because I'm using a 576i DV and 1080i HDV sources rather than 480i DV which uses a different YUV colour space. On a MacPro (2 x dual core (core-2 based) 2.6GHz Xeon) running WinXP, VIC was using close to 90% CPU on one of the cores for 576i DV. Cheers, Doug > -----Original Message----- > From: owner-ag-t...@mcs.anl.gov [mailto:owner-ag-t...@mcs.anl.gov] On > Behalf Of Piers O'Hanlon > Sent: Tuesday, 22 April 2008 10:19 AM > To: ag-tech > Subject: Re: [AG-TECH] Any more H.264 news? > > Hi folks, > > I thought I'd just clarify a couple of things relevant to the Firewire > camera discussion - There are two basic types of the firewire cameras: > - AVC - DV 'handycam' video camera - which provide DV compressed > video, usually with audio > - DCAM - simpler devices that just provide uncompressed video > > (for more details see: http://en.wikipedia.org/wiki/FireWire_camera) > > The support for these cams aries under windows, and Linux > - Under linux there's different respective support libraries (libdc, > libavc) to directly bring in the two different types of video - there > are also higher level apps that can convert DCAM (coriander) and AVC > (DV4Linux) video streams to video4linux - they seem to work but are a > bit flakey at times. As far as UCL-VIC goes there is an alpha driver > for DCAM video which currently doesn't really work, and there's no > support for AVC cameras. On the decode side there also alpha support > for DV decode which also doesn't quite work (anyone is welcome to > debug these - we only have limited time...). I understand that the VIC > from UQ DOES have support for AVC devices but I'm not sure if handles > DCAM devices. > - Under Windows I have tested a DCAM device successfully but that > doesn't mean they all work (though they should do). I have not tested > an AVC device as yet but I suspect there may be problems (as mentioned > on the list e.g by Andrew Rowley). In theory the Direct Show Windows > capture should be able to create a filter-graph that would need to > include a DV-to-YUV converter (DS filter) but I'm not clear if this is > actually happening (or that Windows ships such a DS filter...). I > don't know whether the UQ VIC supports DCAM/AVC under windows > separately? > > Piers. > > > On Tue, Apr 22, 2008 at 12:12 AM, Nathan Gardiner > <nathan.gardi...@canterbury.ac.nz> wrote: > > Hi Andrew, > > > > I have come across this before. Are you using the extended video > > producer for windows? If you are then it doesn't work with PAL > > cameras (which UK, Australia and NZ etc use). > > > > In regards to the UQ vislab DV / HDV services, under my ubuntu box I > > had a similar problem until I installed a fairly up-to-date NVidia > > Graphics card and drivers. (I am currently using an 8800 card). > > > > Hope this helps. > > > > Regards, > > Nathan > > > > ________________________________ > > From: owner-ag-t...@mcs.anl.gov [mailto:owner-ag-t...@mcs.anl.gov] > On > > Behalf Of Andrew Rowley > > Sent: Monday, 21 April 2008 10:32 p.m. > > To: Andrew Ford; Douglas Kosovic > > Cc: ag-tech > > Subject: RE: [AG-TECH] Any more H.264 news? > > > > > > 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.row...@manchester.ac.uk > > w : www.manchester.ac.uk/researchcomputing > > > > --------------------------------------------------------- > > > > ________________________________ > > > > > > From: owner-ag-t...@mcs.anl.gov [mailto:owner-ag-t...@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 > <dougl...@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
