* // live capture from camcorder over USB bus // @ 2009-02-13 15:30 Julian Oliver 2009-02-14 13:25 ` Laurent Pinchart 2009-02-15 20:48 ` CityK 0 siblings, 2 replies; 4+ messages in thread From: Julian Oliver @ 2009-02-13 15:30 UTC (permalink / raw) To: video4linux-list hola, i work a lot with computer vision and would very much like to use a camcorder as a V4L2 device - ie as a high-quality 'webcam' - over the USB bus. i am looking at a variety of camcorders but have found very little reliable information as to which, if any, allow for stream playback at native capture sizes, let alone as raw frames. instead i see complaints of high quality camcorders yielding only 320x240. is there a site, or any advice/experience, someone on this list could provide me to these ends? i do not have a FireWire port on my laptops but would consider a PCI express adaptor to allow for capture in this manner as a second option. cheers, -- Julian Oliver home: New Zealand based: Madrid, Spain currently: Madrid, Spain about: http://julianoliver.com -- video4linux-list mailing list Unsubscribe mailto:video4linux-list-request@redhat.com?subject=unsubscribe https://www.redhat.com/mailman/listinfo/video4linux-list ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: // live capture from camcorder over USB bus // 2009-02-13 15:30 // live capture from camcorder over USB bus // Julian Oliver @ 2009-02-14 13:25 ` Laurent Pinchart 2009-02-14 13:43 ` Julian Oliver 2009-02-15 20:48 ` CityK 1 sibling, 1 reply; 4+ messages in thread From: Laurent Pinchart @ 2009-02-14 13:25 UTC (permalink / raw) To: video4linux-list Hi Julian, On Friday 13 February 2009 16:30:47 Julian Oliver wrote: > hola, > > i work a lot with computer vision and would very much like to use a > camcorder as a V4L2 device - ie as a high-quality 'webcam' - over the USB > bus. > > i am looking at a variety of camcorders but have found very little reliable > information as to which, if any, allow for stream playback at native > capture sizes, let alone as raw frames. instead i see complaints of high > quality camcorders yielding only 320x240. > > is there a site, or any advice/experience, someone on this list could > provide me to these ends? > > i do not have a FireWire port on my laptops but would consider a PCI > express adaptor to allow for capture in this manner as a second option. I've heard of a few Panasonic camcorders (GS-37, GS-180, GS-320 and GS-500) that are UVC compliant and can stream both recorded video (in DV format) or live video (in MJPEG format). Unfortunately, live video streaming is limited to 320x240. Camcorders aren't really designed for live video streaming, so I'm not surprised that Panasonic didn't bother supporting higher resolutions in MJPEG. I'm curious as to why you want to use a camcorder instead of a high-quality USB video camera. Best regards, Laurent Pinchart -- video4linux-list mailing list Unsubscribe mailto:video4linux-list-request@redhat.com?subject=unsubscribe https://www.redhat.com/mailman/listinfo/video4linux-list ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: // live capture from camcorder over USB bus // 2009-02-14 13:25 ` Laurent Pinchart @ 2009-02-14 13:43 ` Julian Oliver 0 siblings, 0 replies; 4+ messages in thread From: Julian Oliver @ 2009-02-14 13:43 UTC (permalink / raw) To: video4linux-list ..on Sat, Feb 14, 2009 at 02:25:19PM +0100, Laurent Pinchart wrote: > Hi Julian, > > On Friday 13 February 2009 16:30:47 Julian Oliver wrote: > > hola, > > > > i work a lot with computer vision and would very much like to use a > > camcorder as a V4L2 device - ie as a high-quality 'webcam' - over the USB > > bus. > > > > i am looking at a variety of camcorders but have found very little reliable > > information as to which, if any, allow for stream playback at native > > capture sizes, let alone as raw frames. instead i see complaints of high > > quality camcorders yielding only 320x240. > > > > is there a site, or any advice/experience, someone on this list could > > provide me to these ends? > > > > i do not have a FireWire port on my laptops but would consider a PCI > > express adaptor to allow for capture in this manner as a second option. > > I've heard of a few Panasonic camcorders (GS-37, GS-180, GS-320 and GS-500) > that are UVC compliant and can stream both recorded video (in DV format) or > live video (in MJPEG format). Unfortunately, live video streaming is limited > to 320x240. right, i wondered if that would be the case. > > Camcorders aren't really designed for live video streaming, so I'm not > surprised that Panasonic didn't bother supporting higher resolutions in MJPEG. > fair enough. Firewire stream is perhaps my only option in that case, which means looking at buying a DV camera and connecting it via a Firewire Express Card adaptor (laptop). > I'm curious as to why you want to use a camcorder instead of a high-quality > USB video camera. i have a QuickCam Pro 9000 which is certainly a good camera for indoor computer vision work. outdoors however, where much of my new natural feature tracking work is based now, it performs poorly. with this in mind i'm looking at camcorders as they come with manual controls that will aid me in getting the best possible image. furthermore camcorders often allow for the use of wide-angle lenses which increase the area in focus relative to the captured frame overall. that said, i am looking at industrial proof USB cameras like this: http://www.theimagingsource.com/en_US/products/cameras/usb-cmos-color/dfk21buc03/ .. which is apparently supported by the Unicap driver interface. however as there is so little information about their relative performance on Linux i'm reluctant to take the leap of faith and buy one. if there is a better USB2.0 UVC friendly camera than the camera above or the Logitech QuickCam Pro 9000 in the areas of colour accuracy, frame rate and manual control - while allowing for use of additional lenses - i would be happy to hear about it! price is not a concern at this stage. thanks for your reply, -- Julian Oliver home: New Zealand based: Madrid, Spain currently: Madrid, Spain about: http://julianoliver.com -- video4linux-list mailing list Unsubscribe mailto:video4linux-list-request@redhat.com?subject=unsubscribe https://www.redhat.com/mailman/listinfo/video4linux-list ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: // live capture from camcorder over USB bus // 2009-02-13 15:30 // live capture from camcorder over USB bus // Julian Oliver 2009-02-14 13:25 ` Laurent Pinchart @ 2009-02-15 20:48 ` CityK 1 sibling, 0 replies; 4+ messages in thread From: CityK @ 2009-02-15 20:48 UTC (permalink / raw) To: Julian Oliver; +Cc: video4linux-list Julian Oliver wrote: > hola, > > i work a lot with computer vision and would very much like to use a camcorder as > a V4L2 device - ie as a high-quality 'webcam' - over the USB bus. > > i am looking at a variety of camcorders but have found very little reliable > information as to which, if any, allow for stream playback at native capture > sizes, let alone as raw frames. instead i see complaints of high quality > camcorders yielding only 320x240. > > is there a site, or any advice/experience, someone on this list could provide me > to these ends? > > i do not have a FireWire port on my laptops but would consider a PCI express > adaptor to allow for capture in this manner as a second option. > > cheers, > > I don't know if you've seen this, but just in case you haven't, have a look through the links provided here: http://www.linuxtv.org/wiki/index.php/V4L_IEEE1394_devices -- video4linux-list mailing list Unsubscribe mailto:video4linux-list-request@redhat.com?subject=unsubscribe https://www.redhat.com/mailman/listinfo/video4linux-list ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2009-02-15 20:49 UTC | newest] Thread overview: 4+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2009-02-13 15:30 // live capture from camcorder over USB bus // Julian Oliver 2009-02-14 13:25 ` Laurent Pinchart 2009-02-14 13:43 ` Julian Oliver 2009-02-15 20:48 ` CityK
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