Followup to: <[EMAIL PROTECTED]>
By author:Gene Heskett <[EMAIL PROTECTED]>
In newsgroup: linux.dev.kernel
>
> Do I have something fubar in the usb? Or is this just the nature of
> the beast?
>
USB pretty much is fubar. It's a horrible protocol on pretty much
every level including the
use a minimum resolution until you detect motion then switch to high
resolution.
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use a minimum resolution until you detect motion then switch to high
resolution.
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Please read the FAQ at
Followup to: [EMAIL PROTECTED]
By author:Gene Heskett [EMAIL PROTECTED]
In newsgroup: linux.dev.kernel
Do I have something fubar in the usb? Or is this just the nature of
the beast?
USB pretty much is fubar. It's a horrible protocol on pretty much
every level including the physical
Gene Heskett wrote:
Greetings;
Motherboard is a biostar with nforce2 chipset, 2800xp cpu, gig of ram.
I've recently made the observation that while I can view 30fps video
from my firewire equipt movie camera with a minimal cpu hit of 2-3%,
but viewing the video from a webcam on a usb 1.1 circuit
On Wed, 23 Feb 2005, Paulo Marques wrote:
> Matt Mackall wrote:
> > [...]
> > JPEG data is DCT of 8x8 pixel chunks. If you can get at that, you can
> > compare the DC terms of each chunk with minimal decoding. Various
> > thumbnailers do this for speed already.
>
> I really doubt that this would
Matt Mackall wrote:
[...]
JPEG data is DCT of 8x8 pixel chunks. If you can get at that, you can
compare the DC terms of each chunk with minimal decoding. Various
thumbnailers do this for speed already.
I really doubt that this would work. It seems to me that you can have
very different DC terms
Matt Mackall wrote:
[...]
JPEG data is DCT of 8x8 pixel chunks. If you can get at that, you can
compare the DC terms of each chunk with minimal decoding. Various
thumbnailers do this for speed already.
I really doubt that this would work. It seems to me that you can have
very different DC terms
On Wed, 23 Feb 2005, Paulo Marques wrote:
Matt Mackall wrote:
[...]
JPEG data is DCT of 8x8 pixel chunks. If you can get at that, you can
compare the DC terms of each chunk with minimal decoding. Various
thumbnailers do this for speed already.
I really doubt that this would work. It
Gene Heskett wrote:
Greetings;
Motherboard is a biostar with nforce2 chipset, 2800xp cpu, gig of ram.
I've recently made the observation that while I can view 30fps video
from my firewire equipt movie camera with a minimal cpu hit of 2-3%,
but viewing the video from a webcam on a usb 1.1 circuit
On Mon, Feb 21, 2005 at 05:08:27PM -0500, Gene Heskett wrote:
> On Monday 21 February 2005 13:29, Wichert Akkerman wrote:
> >Previously Gene Heskett wrote:
> >> Thats what I was afraid of, which makes using it for a motion
> >> detected burgular alarm source considerably less than practical
> >>
On Tuesday 22 February 2005 03:53, Barry K. Nathan wrote:
>Is your USB 1.1 controller UHCI or OHCI? If it's UHCI, perhaps you
> could try an OHCI controller (e.g. some USB PCI cards) and see if
> that makes any difference. (I remember reading something about OHCI
> being more efficient than UHCI
On Mon, Feb 21, 2005 at 12:16:35PM -0500, Gene Heskett wrote:
> Greetings;
>
> Motherboard is a biostar with nforce2 chipset, 2800xp cpu, gig of ram.
>
> I've recently made the observation that while I can view 30fps video
> from my firewire equipt movie camera with a minimal cpu hit of 2-3%,
On Mon, Feb 21, 2005 at 12:16:35PM -0500, Gene Heskett wrote:
Greetings;
Motherboard is a biostar with nforce2 chipset, 2800xp cpu, gig of ram.
I've recently made the observation that while I can view 30fps video
from my firewire equipt movie camera with a minimal cpu hit of 2-3%,
but
On Tuesday 22 February 2005 03:53, Barry K. Nathan wrote:
Is your USB 1.1 controller UHCI or OHCI? If it's UHCI, perhaps you
could try an OHCI controller (e.g. some USB PCI cards) and see if
that makes any difference. (I remember reading something about OHCI
being more efficient than UHCI in
On Mon, Feb 21, 2005 at 05:08:27PM -0500, Gene Heskett wrote:
On Monday 21 February 2005 13:29, Wichert Akkerman wrote:
Previously Gene Heskett wrote:
Thats what I was afraid of, which makes using it for a motion
detected burgular alarm source considerably less than practical
since the
On Monday 21 February 2005 13:29, Wichert Akkerman wrote:
>Previously Gene Heskett wrote:
>> Thats what I was afraid of, which makes using it for a motion
>> detected burgular alarm source considerably less than practical
>> since the machine must be able to do other things too.
>
>Dependin on the
Gene Heskett wrote:
On Monday 21 February 2005 12:58, Oliver Neukum wrote:
[...]
A video stream over usb1.1 must be compressed due to bandwidth
available. Decompression needs cpu.
Thats what I was afraid of, which makes using it for a motion detected
burgular alarm source considerably less than
Am Montag, 21. Februar 2005 19:25 schrieb Gene Heskett:
> Thats what I was afraid of, which makes using it for a motion detected
> burgular alarm source considerably less than practical since the
> machine must be able to do other things too. Darn. And its usb1.1
> even when plugged into a
Previously Gene Heskett wrote:
> Thats what I was afraid of, which makes using it for a motion detected
> burgular alarm source considerably less than practical since the
> machine must be able to do other things too.
Dependin on the type of compression used you might be able to detect
motion
On Monday 21 February 2005 12:58, Oliver Neukum wrote:
>Am Montag, 21. Februar 2005 18:16 schrieb Gene Heskett:
>> Greetings;
>>
>> Motherboard is a biostar with nforce2 chipset, 2800xp cpu, gig of
>> ram.
>>
>> I've recently made the observation that while I can view 30fps
>> video from my
Am Montag, 21. Februar 2005 18:16 schrieb Gene Heskett:
> Greetings;
>
> Motherboard is a biostar with nforce2 chipset, 2800xp cpu, gig of ram.
>
> I've recently made the observation that while I can view 30fps video
> from my firewire equipt movie camera with a minimal cpu hit of 2-3%,
> but
Greetings;
Motherboard is a biostar with nforce2 chipset, 2800xp cpu, gig of ram.
I've recently made the observation that while I can view 30fps video
from my firewire equipt movie camera with a minimal cpu hit of 2-3%,
but viewing the video from a webcam on a usb 1.1 circuit takes 30-40%
of
Greetings;
Motherboard is a biostar with nforce2 chipset, 2800xp cpu, gig of ram.
I've recently made the observation that while I can view 30fps video
from my firewire equipt movie camera with a minimal cpu hit of 2-3%,
but viewing the video from a webcam on a usb 1.1 circuit takes 30-40%
of
Am Montag, 21. Februar 2005 18:16 schrieb Gene Heskett:
Greetings;
Motherboard is a biostar with nforce2 chipset, 2800xp cpu, gig of ram.
I've recently made the observation that while I can view 30fps video
from my firewire equipt movie camera with a minimal cpu hit of 2-3%,
but viewing
On Monday 21 February 2005 12:58, Oliver Neukum wrote:
Am Montag, 21. Februar 2005 18:16 schrieb Gene Heskett:
Greetings;
Motherboard is a biostar with nforce2 chipset, 2800xp cpu, gig of
ram.
I've recently made the observation that while I can view 30fps
video from my firewire equipt movie
Previously Gene Heskett wrote:
Thats what I was afraid of, which makes using it for a motion detected
burgular alarm source considerably less than practical since the
machine must be able to do other things too.
Dependin on the type of compression used you might be able to detect
motion by
Am Montag, 21. Februar 2005 19:25 schrieb Gene Heskett:
Thats what I was afraid of, which makes using it for a motion detected
burgular alarm source considerably less than practical since the
machine must be able to do other things too. Darn. And its usb1.1
even when plugged into a 2.0
Gene Heskett wrote:
On Monday 21 February 2005 12:58, Oliver Neukum wrote:
[...]
A video stream over usb1.1 must be compressed due to bandwidth
available. Decompression needs cpu.
Thats what I was afraid of, which makes using it for a motion detected
burgular alarm source considerably less than
On Monday 21 February 2005 13:29, Wichert Akkerman wrote:
Previously Gene Heskett wrote:
Thats what I was afraid of, which makes using it for a motion
detected burgular alarm source considerably less than practical
since the machine must be able to do other things too.
Dependin on the type of
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