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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Regarding the HitLab VIC, I meant to say “higher resolutions and
the Blackmagic pixelformat” modifications in the grabber code were made, not
just “higher resolution support” modifications.<o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The Blackmagic pixelformat modifications involve doing color
space conversions to planar YUV 4:2:0 and ensuring that the filters in the
DirectShow filter graph are able to negotiate and connect for that pixelformat.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>As for any other modifications elsewhere in HitLab NZ VICs code,
I’m not sure as I only helped a bit with the DirectShow grabber stuff. I don’t
have a copy of the HitLab NZ code myself.<o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Doug<o:p></o:p></span></p>
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color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> ag-tech-bounces@lists.mcs.anl.gov
[mailto:ag-tech-bounces@lists.mcs.anl.gov] <b>On Behalf Of </b>Andrew Ford<br>
<b>Sent:</b> Wednesday, 20 January 2010 7:41 AM<br>
<b>To:</b> Jimmy Miklavcic<br>
<b>Cc:</b> ag-tech@lists.mcs.anl.gov<br>
<b>Subject:</b> Re: [AG-TECH] HDMI vic & AGVCR.<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'>Hi Jimmy,<br>
<br>
I think the 128Kbps issue you're seeing might just be the bitrate slider being
limited - try the -B [bitrate] command line option, that will set the max value
for the slider.<br>
<br>
Also, the unfortunate thing is that due to HIT Lab's unresolved licensing
issues, I'm not sure if it would be legal for anyone else to continue working
on their code directly (and be able to release it). It might be possible for
someone to recreate their work, since I'm not sure if it was much more than
adding support for higher resolutions in the DirectShow grabber like Doug said,
but I'm not sure of the legal issues involved with that.<br>
<br>
The good news is that I've been having some success with testing x264 with
Doug's Blackmagic card grabber on Linux. I can get near-full fps at full 1080
HD, albeit with some latency (think I got it down to about .8 seconds), and not
too much CPU use either, around 2 cores on a 4-core 3Ghz machine. mpeg4 is
probably a bust since I can't successfully enable multithreading on the
encoding side, it just crashes.<br>
<br>
We haven't gotten around to testing AGVCR extensively with HD material, but we
did have some issues with artifacting in general that were intermittent, so
when recording/playing back you might want to make sure the load on the machine
is low and/or try different machines and different platforms.<br>
<br>
--Andrew<o:p></o:p></p>
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<p class=MsoNormal>2010/1/15 Jimmy Miklavcic <<a
href="mailto:jimmy.miklavcic@utah.edu" target="_blank">jimmy.miklavcic@utah.edu</a>><o:p></o:p></p>
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<p>Last year, the HIT Lab in New Zealand was kind enough to knock an HD vic for
the HDMI interface. Now Nathan Gardiner has moved on and I was wondering if
there was anyone else there that can continue work on it. One major limitation
is that it will stream at a maximum of 128 Kbps. That's way too low for what we
need. Doesn't make much sense to use HD at 128 Kbps.<o:p></o:p></p>
<p>Is anyone picking up the work of Derek Piper and his AGVCR. I'm having some
issues where it doesn't seem to handle the HD streams and during playback, I'm
seeing some major artifacts and image break-up.<o:p></o:p></p>
<p>If anyone is working other HD solutions I am very interested in hearing
about it.<o:p></o:p></p>
<p>Thanks,<o:p></o:p></p>
<p>Jimmy<o:p></o:p></p>
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<p class=MsoNormal> -- <br>
Jimmy Miklavcic <br>
Multimedia Specialist <br>
<span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><a
href="mailto:Jimmy.Miklavcic@utah.edu" target="_blank"><span style='font-size:
12.0pt;font-family:"Times New Roman","serif"'>Jimmy.Miklavcic@utah.edu</span></a></span>
<br>
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