On Wed Dec 5 03:02:50 2001 Justin Schoeman wrote...
>
>Stan Brown wrote:
>
> > ...
>
>> NVrec: error getting more video data. Trying to continue.
>> VQ: 7.028 Offset: 0.004 Slipage: 0.008 Warp: -7 Drop: 0 VQ:
>10.365 Offset: 0.005 Slipage: 0.008 Warp: -7 Drop: 0 VQ: 11.497
>Offset: 0.005 Slipage: 0.008 Warp: -7 Drop: 0 VQ: 11.716 Offset:
> 0.000 Slipage: 0.008 Warp: -7 Drop: 0 VQ: 11.579 Offset: 0.002 S
>>
>> Also how do I control the lenght of the capture?
>>
>> Thanks for all the help on this.
>>
>> Oh, BTW even droping the quality to 1 doesn't make all the errors go away,
>> althogh it does reduce the qty. This is on an Athalon 750mHZ with 256MB of
>> memory, a WinTV card, and an IDE drive, if thta helps.
>
>
>The "errors" are due to the difference between the system clock, and the
>source video clock. Unfortunatley, low-end capture cards do not
>generate a clock from the input stream, so we have to use the system
>clock. The slight drift between the two will result in occasional
>(although hopefully rare) frame drops/dups.
>
>V4L2 is a little better, as the frame is timestamped on the VSYNC pulse,
>which improves the accuracy quite a bit.
Will adjusting quality, or size of captured image, etc improve this?
Actually more genreally, now that I have it working, which of the knobs
should I try tweaking to optimize it's operation?
>
>You can control the length of capture with the "-F x" switch, where x is
>the number of frames to capture, or the "timer" app in the tools directory.
Cool. thnak, I'll give the timer app a look.
--
Stan Brown [EMAIL PROTECTED] 843-745-3154
Charleston SC.
--
Windows 98: n.
useless extension to a minor patch release for 32-bit extensions and
a graphical shell for a 16-bit patch to an 8-bit operating system
originally coded for a 4-bit microprocessor, written by a 2-bit
company that can't stand for 1 bit of competition.
-
(c) 2000 Stan Brown. Redistribution via the Microsoft Network is prohibited.
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