Hi V4L'ers, [ cc to bttvgrab@xxxxxxxxxxxxxxxxxxxxxx ] I'm new to video, but not to audio or linux, and need to set up a hard-disk based video recorder that I'd like to be Linux based. So I read the docs and thought that Hauppauge cards were the best bet and installed a WinTV-PCI-FM Model 647 that bttvgrab -i tells me has a BT878 chip. I've put this in a 950MHz Athlon, 768 Mbyte RAM, with a recent 75Gbyte IBM HDD and the ATI 8 Mbyte Rage Pro AGP card. Redhat 7.0 finds the card and loads the bttv drivers: [root@chomp /root]# lsmod Module Size Used by bttv 33824 0 (autoclean) i2c-old 3520 1 (autoclean) [bttv] videodev 2656 2 (autoclean) [bttv] All going okay so far.... xawtv installed from Redhat 7.0 gives the amusing (not) error message: [root@chomp /root]# xawtv This is xawtv-3.24, running on Linux/i686 (2.2.16-22) visual: id=0x20 class=4 (TrueColor), depth=16 Xlib: extension "XVideo" missing on display "chomp:0.0". The app-defaults file is not correctly installed. Your fault (core dumped) Even though an strace reveals that it finds my /usr/X11R6/lib/X11/app-defaults/Xawtv file which contains a copy of the example init file from the manual. My reading of the manual says that -noxv should disable the Xvideo extention, it makes no difference. I've added: Section "Module" Load "v4l" EndSection to /etc/X11/XF86Config which results in: (--) no ModulePath specified using default: /usr/X11R6/lib/modules v4l: Unknown error loading module So no luck there. tvset (from tvset990501.tar.gz) fares much better - I can see three versions of the image I want, sometimes in colour, splatted all over the screen. But what really appeals in terms of functionality is bttvgrab. I'm running version 0.15.10 and from the man page I'd like to run root# ./bttvgrab -o pmm-best -t -y but specifying the -t flag, as above, gives: ./bttvgrab internal error: unknown option 'do_trace' [ also, the tcl version has some problems setting a -q flag that is later not recognised. ] But root# ./bttvgrab -o X -y is promising, I get what looks like an out-of-sync black and white picture, probably aliased, but defintely related to the video source. However, the frame counter suggests that I'm dropping half the frames (true even if I record to file or record in a simple, small format). Any help getting a HDD video recorder going under Linux would be much appreciated - the bttvgrab route seems most promising so far, but I'm certainly prepared to go out and buy more hardware. Tony Robinson -- Dr A J Robinson, Technical Director, SoftSound Ltd., Cambridge, U.K. http://www.softsound.com, Phone +44 1223 421220 Fax +44 1223 421583
