Re: [W] Quickcam cap rate. HELP WIN 95 USERS!

John R. Haggis (
Tue, 23 Jan 1996 03:52:25 -0800

Well, Andrew, everything looks good but the Win95. I don't know how much
native 32-bit stuff is in CUSM, and I doubt there is any in QuickMovie, and
some 16-bit apps are iffy in W95. I've seen a couple of complaints on this
list that CUSM under W95 is a dog, so there may be a problem with
QuickMovie. If it is a 16-bit app, it's got to go through
driver-translation layers in the OS probably to go from 16-bit API to the
32-bit video drivers. Oh but QuickCam has 16-bit drivers? Obviously over
my head, but I fear the worst with Frankenstein-style patching together of
drivers... [insert various disparaging remarks about Bill Gates and how
he's enjoying your money while you sweat the details here].

Um, sorry this isn't more help. Please, others using W95, can you comment
and get some real info here?

- John

At 07:25 PM 1/20/96 +1100, you wrote:
>On Wed, 17 Jan 1996, John R. Haggis wrote:
>> At 01:23 PM 1/11/96 +1100, you wrote:
>> >I have a PC version, and almost any movement is blurry. I tried most of
>> ...
>> >How do your results compare to this.. When capturing an AVI in a fairly
>> >well lit room, I was averaging between 80 and 90 percent of my frames
>> >being dropped???? Is this right or expected? The AVIs are nothing
>> ...
>> I have the PC QuickCam on a Toshiba T400 75MHz Pentium laptop and it seems
>> to run OK at about 10 frames per second with a 120x160 window. I don't have
>> stats on dropped frames although it looked like it was doing at least 5 fps
>> if not 10. Where did you get your stats on dropped frames? I have just two
>> things to say about it:
>Drpped frames stats are stated when recording an AVI with Quickmovie
>(comes with the Quickcam)
>> 1. Ya don't buy a parallel-port QuickCam to make seamless movies.
>I know.
>> 2. It depends on a lot of stuff, none of which you've told us yet:
>> - CPU speed and cache
> pentium 100, 256k cache
>> - Bus architecture (ISA, VLB, PCI, MC, EISA)
>> - OS type (W31, WFWG311, W95, god forbid OS/2)
> w95
>> - Amount of memory (affects disk paging)
> 16mb
>> - Disk cache type and size
> none
>> - Disk doubling? Memory doubling?
> none
>> - Network running?
> none
>> - Application used to record the movie
> Quickmovie
>> - Display system
> 16bit (highcolor), trident 1mb PCI
>> - Other software/drivers running
> no other software running, no distinguishable fancy drivers.

John R. Haggis  
Millennium Research
(408) 269-1814 vox 
(408) 269-9323 fax