Actually, no we're not talking about cheap cards. For a security/surveillance application this is a must to compete with commerical DVR's. I would say the ProVideo PV148 cards are industrial. Plus, their windows drivers support fast input switching. Ryan > -----Original Message----- > From: video4linux-list-admin@xxxxxxxxxx > [mailto:video4linux-list-admin@xxxxxxxxxx]On Behalf Of Ronald Bultje > Sent: Wednesday, June 11, 2003 10:50 AM > To: video4linux-list@xxxxxxxxxx > Subject: Re: Video Overlay and capture. > > > Hey, > > On Wed, 2003-06-11 at 02:29, Limos Special wrote: > > Is there anyway to capture the fields to different > > buffers, using v4l1 ? > > Nope, v4l2 only. > > > other question, is there any doc about fast image grab > > and channel changing ? > > Basically, I am trying to capture 1 frame per channel > > at the maximum rate, but if I dont discard one frame > > or put an usleep, all frames got messes up, half > > blue/half image, or like a old tv with horizontal > > lines. > > Now this is driving me crazy, you're number I-don't-know-how-much that's > asking this. Really, cheap TV cards cost EUR50 or so, even less > second-hand. Developping applications and driver that can switch channel > on card at such a rate while maintaining quality takes days, weeks, and > at EUR50/hour (even cheap programmers cost money), that'd mean that > developping these applications is a *lot* more expensive than just > buying a second TV card for your second cam, or even 4 cards, or 10, or > 100. > > Why are people doing this? > > Ronald > > -- > Ronald Bultje <rbultje@xxxxxxxxxxxxxxxxxxx> > > > -- > video4linux-list mailing list > Unsubscribe mailto:video4linux-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/video4linux-list >
