Hello Ok I had done a decision it is realy enough if I save ppm/pgm pictures. Then they are also readable in Matlab. But I have encore problems to find a software who does that. And I had my problems with Linux Does anybode can done me a Link for any Software wich is easy to use? Thanks Daniel > Michael Veigel wrote: > > Hi, > > > > if u really want 25 fps - u have to use v4l2 - the normal kernel stuff ( > v4l1 > > ) only gives u 12 fps ( my expirience ;) ). > > Uh? I have absolutely no problem grabbing 25fps using V4L-1 on a > Pinnacle PCTV (878-based). *PROVIDED* one uses the trick of interleaving > VIDIOCMCAPTURE and VIDIOCSYNC as desribed in the Programming-FAQ which > comes with xawtv. > > > > > I don't know the driver for this card ( i only used bt8xx cards till now > ), u > > have to check if it works with 25 fps ! A good base to start reading is > > www.bytesex.org ( but i don't know, if u'r driver works with the v4l2 > api ). > > > > Btw. why do u want bmp images? Maybe it's better to store them as > jpg,png/pnm > > or tga - there are good libraries to do that :). If u want ascii - try > xpm > > ;). This is alot of data, what uwant to store, so be prepared to have a > good > > disk/strong processor :). > > Plus good test harnesses and a lot of ingenuity. One cant simply do > open/write/close and leave the buffers in the kernel cache; if you do > that, when the update daemon comes, it will push such a burst of data on > the PCI bus, you will usually miss at least one frame. The problem is > exacerbated when one uses low-compression formats such as xpm or bmp. > > > > > Michael > > > > -- > Michel Bardiaux > Peaktime Belgium S.A. Bd. du Souverain, 191 B-1160 Bruxelles > Tel : +32 2 790.29.41 > > > -- > video4linux-list mailing list > Unsubscribe mailto:video4linux-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/video4linux-list > -- +++ GMX - Mail, Messaging & more http://www.gmx.net +++ Jetzt ein- oder umsteigen und USB-Speicheruhr als Prämie sichern!
