Re: Python and webcam capture delay?

2009-07-08 Thread Nobody
On Tue, 07 Jul 2009 22:11:12 -0700, Tim Roberts wrote: >>The webcam is bound to do some encoding; most of them use USB "full speed" >>(12Mbit/sec), which isn't enough for raw 640x480x24...@30fps data. > > That's not true. Most of the web cams made in the last 5 years or so run > at high speed, 4

Re: Python and webcam capture delay?

2009-07-08 Thread Nobody
On Tue, 07 Jul 2009 22:49:22 -0700, Dennis Lee Bieber wrote: > On Tue, 07 Jul 2009 23:37:43 +0100, Nobody > declaimed the following in gmane.comp.python.general: > >> AFAIK, the only real difference between "USB-1 conformant" and "USB-2 >> conformant" is that the latter actually passed a test of

Re: Python and webcam capture delay?

2009-07-07 Thread Tim Roberts
Nobody wrote: > >The webcam is bound to do some encoding; most of them use USB "full speed" >(12Mbit/sec), which isn't enough for raw 640x480x24...@30fps data. That's not true. Most of the web cams made in the last 5 years or so run at high speed, 480 Mbps. Full speed only gets you 1 fps at 640

Re: Python and webcam capture delay?

2009-07-07 Thread Nobody
On Tue, 07 Jul 2009 09:01:39 +0300, jack catcher (nick) wrote: > Thanks for the comments. Unfortunately, such specifications aren't easy > to find, even in reviews. Fortunately several newer webcams seem at > least to use usb2. Supporting USB-2 doesn't mean that the camera necessarily uses high

Re: Python and webcam capture delay?

2009-07-06 Thread jack catcher (nick)
Nobody kirjoitti: On Mon, 06 Jul 2009 20:41:03 +0300, jack catcher (nick) wrote: Does the webcam just deliver frames, or are you getting frames out of a decoder layer? If it's the latter, you want to distribute the encoded video, which should be much lower bandwidth. Exactly how you do that d

Re: Python and webcam capture delay?

2009-07-06 Thread Rhodri James
On Mon, 06 Jul 2009 18:41:03 +0100, jack catcher (nick) wrote: Rhodri James kirjoitti: Does the webcam just deliver frames, or are you getting frames out of a decoder layer? If it's the latter, you want to distribute the encoded video, which should be much lower bandwidth. Exactly how you

Re: Python and webcam capture delay?

2009-07-06 Thread Nobody
On Mon, 06 Jul 2009 20:41:03 +0300, jack catcher (nick) wrote: >> Does the webcam just deliver frames, or are you getting frames out of >> a decoder layer? If it's the latter, you want to distribute the encoded >> video, which should be much lower bandwidth. Exactly how you do that >> depends a

Re: Python and webcam capture delay?

2009-07-06 Thread jack catcher (nick)
Rhodri James kirjoitti: On Mon, 06 Jul 2009 07:10:38 +0100, jack catcher (nick) wrote: Tim Roberts kirjoitti: "jack catcher (nick)" wrote: I'm thinking of using Python for capturing and showing live webcam stream simultaneously between two computers via local area network. Operating syste

Re: Python and webcam capture delay?

2009-07-06 Thread Rhodri James
On Mon, 06 Jul 2009 07:10:38 +0100, jack catcher (nick) wrote: Tim Roberts kirjoitti: "jack catcher (nick)" wrote: I'm thinking of using Python for capturing and showing live webcam stream simultaneously between two computers via local area network. Operating system is Windows. I'm goin

Re: Python and webcam capture delay?

2009-07-06 Thread Stef Mientki
jack catcher (nick) wrote: Hi, I'm thinking of using Python for capturing and showing live webcam stream simultaneously between two computers via local area network. Operating system is Windows. I'm going to begin with VideoCapture extension, no ideas about other implementation yet. Do you ha

Re: Python and webcam capture delay?

2009-07-05 Thread jack catcher (nick)
Tim Roberts kirjoitti: "jack catcher (nick)" wrote: I'm thinking of using Python for capturing and showing live webcam stream simultaneously between two computers via local area network. Operating system is Windows. I'm going to begin with VideoCapture extension, no ideas about other implemen

Re: Python and webcam capture delay?

2009-07-05 Thread Tim Roberts
"jack catcher (nick)" wrote: > >I'm thinking of using Python for capturing and showing live webcam >stream simultaneously between two computers via local area network. >Operating system is Windows. I'm going to begin with VideoCapture >extension, no ideas about other implementation yet. Do you

Python and webcam capture delay?

2009-07-05 Thread jack catcher (nick)
Hi, I'm thinking of using Python for capturing and showing live webcam stream simultaneously between two computers via local area network. Operating system is Windows. I'm going to begin with VideoCapture extension, no ideas about other implementation yet. Do you have any suggestions on how s