Hi There! NTSC is analogue, so it can't be described quite correctly as a number of pixels, but it is close enough to say that you get 640x480 interlaced at 30fps, which amounts to 320x480 non-interlaced 30fps, or 640x480 non-interlaced at 15fps. Additionally, the colour is only sent at about half the resolution of the intensity if I am not wrong, so basically its hard to categorize NTSC as x by y at z fps. To answer your actual question though, I would say most USB webcams will give you lower quality than you are used to from 'TV', not because of resolution, but because of colour, because the actual sensor is crappy. Most webcams I have tried also give blurry motion. A bttv type board should do the trick fine, as would a Matrox Meteor II. You should be able to hook a standard handycam to those for NTSC quality grabbing. Another option to look into might be Digital Video over FireWire. See linux1394.sourceforge.net - This should give you quality superior to NTSC, but it is not clear a FireWire host adapter and Cam would cost any more than an Analogue framegrabber + a handycam... Richie On Thu, 8 Nov 2001, Adam wrote: > > hello, > I need to make some VHS-tape quality recording. thus I have > two questions. > > 1) what is resolution/frame rate of VHS-NTSC (USA) recording. > I could not find conclusive information on web, but it seems > to me that it is 320x240 @ 30 fps. (32bit color?). > > 2) what kind of web cam would be recommended. it seems to me > that it should be either one which connects to bttv > or USB cam. I don't have any experience with either, so not sure > which is prefered. > > comments? > > -- > Adam > http://www.eax.com The Supreme Headquarters of the 32 bit registers > > > > _______________________________________________ > Video4linux-list mailing list > Video4linux-list@xxxxxxxxxx > https://listman.redhat.com/mailman/listinfo/video4linux-list >
