My setup: AMD Duron 800 128mb ram Osprey 100 card, voodoo3 3000 tv card
I got this speed even in lower configs (as P II and K6 II). There are some other codes in my home page, out of videodog, including a link to a package called TCap at http://toonarchive.com/tcap/, which code is very straight and clear. Regards ----- Original Message ----- From: "Andr� Luiz Ribeiro Moutinho" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Cc: "Mauricio Micoski" <[EMAIL PROTECTED]>; "Marcelo Ferreira Vinhas" <[EMAIL PROTECTED]> Sent: Tuesday, January 29, 2002 6:39 PM Subject: RES: [V4L] capture speed improvement > Hi, > > I am no using double buffering. I have used a sample code from videodog > I believe that to use double buffering I should set the modules.conf > parameter > add options bttv gbuffers=2 fieldnr=2. Am I wrong ? > > Please, do you have any sample code showing how I can use double buffer > properly ? > > You said I should get at least 27,28 fps. What computer configuration did > you get this ? > > Thanks a lot, > > Best regards, > > Andr� Luiz R. Moutinho > Computer Engineer, COMPSIS - Computadores e Sistemas Ind. e Com. Ltda > [EMAIL PROTECTED], [EMAIL PROTECTED] > Voice: +55 12 394-13966 Fax: +55 12 322-0888 > > > > ----- Mensagem original ----- > > De: Gleicon S. Moraes [SMTP:[EMAIL PROTECTED]] > > Enviada em: ter�a-feira, 29 de janeiro de 2002 16:25 > > Para: [EMAIL PROTECTED] > > Assunto: Re: [V4L] capture speed improvement > > > > If should get at least 27, 28 fps with this card. > > The read syscall can be slower than a memcpy from a mmap'ed device. > > Something must be wrong with your code, check out if you are using double > > buffering properly. > > Best regards > > > > > > -- > > Gleicon S. Moraes > > [EMAIL PROTECTED] > > [EMAIL PROTECTED] > > http://planeta.terra.com.br/informatica/gleicon > > > > ----- Original Message ----- > > From: "Andr� Luiz Ribeiro Moutinho" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Cc: "Mauricio Micoski" <[EMAIL PROTECTED]>; "Marcelo > > Ferreira Vinhas" <[EMAIL PROTECTED]> > > Sent: Tuesday, January 29, 2002 6:17 PM > > Subject: [V4L] capture speed improvement > > > > > > > Hi > > > > > > I am developing a capture and video multicast. I have > > > used the VIDIOCMCAPTURE and VIDIOCSYNC ioctls to read > > > 1 frame from the grabber (struct video_mmap.frame = 0) > > > > > > I could accomplish this but the maximum frame rate is 15. > > > I would like to know how I can improve the video frame rate. > > > I need a higher frame rate and the CPU usage is very low. > > > > > > What about using the read syscall ? Is it faster than mmap > > > method ? Is threre a faster method ? Do I have a DMA access > > > time limit ? > > > > > > I am using the PixelView Play TV Pro and running under > > > a Pentium 300Mhz equivalent machine and linux RH7.1 > > > kernel 2.4.7. > > > > > > Thanks a lot, > > > > > > Andr� Luiz R. Moutinho > > > Computer Engineer, COMPSIS - Computadores e Sistemas Ind. e Com. Ltda > > > [EMAIL PROTECTED], [EMAIL PROTECTED] > > > Voice: +55 12 394-13966 Fax: +55 12 322-0888 > > > > > > > > > > > > > > > > > > > > > > > > _______________________________________________ > > > Video4linux-list mailing list > > > [EMAIL PROTECTED] > > > https://listman.redhat.com/mailman/listinfo/video4linux-list > > > > > > > > > > > _______________________________________________ > > Video4linux-list mailing list > > [EMAIL PROTECTED] > > https://listman.redhat.com/mailman/listinfo/video4linux-list > > > > _______________________________________________ > Video4linux-list mailing list > [EMAIL PROTECTED] > https://listman.redhat.com/mailman/listinfo/video4linux-list > _______________________________________________ Video4linux-list mailing list [EMAIL PROTECTED] https://listman.redhat.com/mailman/listinfo/video4linux-list
