[AG-TECH] AVCHD and AG

[Douglas Kosovic]

Hi Nathan

I was adding generic support for more pixelformats in VIC's DirectShow
grabber, with a preference for YUV420 if supported natively by the
capture hardware.

Setting the DirectShow SampleGrabber to YUV420 and then using
DirectShow's "Intelligent Connect" mechanism causes the Blackmagic
filter to get set to YUV420 720x486 (and that's 486, not 480 which is
strange).

So looks like adding proper Blackmagic Intensity card support requires
explicit programmatic support of the Intensity DirectShow filter, maybe
interrogating it and listing inputs/formats in the input menu of VIC
(e.g. "HDMI 29.97 fps 1080i", "HDMI 25 fps 1080i", ..., "Analog YCbCr
480i", etc).

If you guys are coding for the Blackmagic Intensity be my guest, it'll
be wasted effort if we both do it.

One of the other changes I did was add support for remote DirectShow
filter graph connection with GraphEdit (found in Microsoft's Platform
SDK). A screendump of GraphEdit remote filter graph connection to VIC,
involving the Intensity Pro: 
 http://www.vislab.uq.edu.au/ag3/windows/graphedit.png
GraphEdit is very useful for seeing the properties (pixelforms,
resolution, etc) of the filters and pins.


Cheers,
Doug

> -----Original Message-----
> From: Nathan Gardiner [mailto:nathan.gardiner at canterbury.ac.nz]
> Sent: Thursday, 15 January 2009 6:05 AM
> To: Douglas Kosovic; Jimmy Miklavcic
> Cc: ag-tech at mcs.anl.gov
> Subject: RE: [AG-TECH] AVCHD and AG
> 
> Hi there,
> 
> We are starting to code for the HDMI Intensity card into AccessGrid
for
> a Windows version and should have something within the next couple of
> months.
> 
> 
> 
> Regards,
> 
>
-----------------------------------------------------------------------
> -
> -
> Nathan Gardiner
> Human Interface Technology Lab NZ (HIT Lab NZ)
> Room 110, Old Maths Building, University of Canterbury
> DDI: +64 3 364 3072, Cell: +64 21 163 2956
> 
> 
> 
> -----Original Message-----
> From: ag-tech-bounces at lists.mcs.anl.gov
> [mailto:ag-tech-bounces at lists.mcs.anl.gov] On Behalf Of Douglas
Kosovic
> Sent: Wednesday, 14 January 2009 10:46 a.m.
> To: Jimmy Miklavcic
> Cc: ag-tech at mcs.anl.gov
> Subject: Re: [AG-TECH] AVCHD and AG
> 
> Hi Jimmy,
> 
> > Is anyone using AVCHD, HDMI and the intensity pro cards with AG on a
> > windows XP box, or something close to this combination?
> 
> The Intensity Pro outputs Blackmagic HDYC (YUV 4:2:2) pixel format
that
> isn't supported by VIC's DirectShow grabber at the moment. It doesn't
> matter if a AVCHD or a DV/HDV camcorder is used with the HDMI.
> 
> I'm currently in the process of adding multiple YUV formats support to
> VIC's DirectShow grabber (which so far has fixed a white vertical line
> issue with 480i DV over firewire). Maybe in the next couple of weeks
> it'll work with the Blagmagic Intensity Pro.
> 
> 
> Cheers,
> Doug