Hi folks, How can I tell if v4l2 is available to my applications? I know this may seem silly but my capture apps act as though v4l2 does not exist. I am using kernel 2.4.18 patched with v4l2-20020205.tar.gz from the site: http://bytesex.org/patches/2.4.18/ Compiled v4l as module, BT848 as module (I have an Hauppauge bt878 card), then I run the following insmods: insmod i2c-core insmod i2c-algo-bit insmod i2c-dev insmod i2c-proc insmod videodev insmod v4l2-common insmod bttv card=10 tuner=2 gbuffers=10 <-- no longer has "v4l2=1" param? insmod tuner type=2 insmod msp3400 insmod soundcore insmod btaudio The btaudio actually works great on this card so I've avoided putting a sound card in this (server) box. Next I set up for TV capture (NTSC) through my cable box: /usr/local/bin/v4lctl -c /dev/video0 setnorm ntsc /usr/local/bin/v4lctl -c /dev/video0 setinput Television /usr/local/bin/v4lctl -c /dev/video0 setchannel 3 For capture, I've been working with mp1e. Under v4l1, mp1e's output begins to have A/V sync problems well before the end of my 30-minute show. On the zapping mailing list, somebody said this problem was fixed under v4l2. But mp1e fails to detect v4l2 with this code from mp1e-1.9.1/video/v4l2.c (same as recent CVS): if (IOCTL(fd, VIDIOC_QUERYCAP, &vcap) == -1) { close(fd); return NULL; /* Supposedly no V4L2 device, we'll try V4L */ } I have patched mp1e to open /dev/video O_RDWR and mmap PROT_READ|PROT_WRITE as suggested here on video4linux-list. I do not think this is a bug in mp1e, or else I would not bother you folks here on this list. I think my config of v4l2 is incorrect somehow, because FFMPEGrec (from NVrec-20020318 package) also fails to use v4l2. Does v4l2 use different device numbers? I have ones that worked for v4l1: lrwxrwxrwx 1 root root 11 Mar 10 01:39 /dev/video -> /dev/video0 crw-rw-rw- 1 root root 81, 0 Mar 10 01:39 /dev/video0 crw-rw-rw- 1 root root 81, 1 Mar 10 01:39 /dev/video1 crw-rw-rw- 1 root root 81, 2 Mar 10 01:39 /dev/video2 crw-rw-rw- 1 root root 81, 3 Mar 10 01:39 /dev/video3 ...but I have searched for an updated MAKEDEV for v4l2 or someone discussing mknod options and found nothing. Oh please tell me I've done something very simple very wrong! I'm at my wits end with this A/V sync problem. Here's my dmesg and lsmod output: Linux video capture interface: v1.00 bttv: driver version 0.7.91 loaded bttv: using 10 buffers with 2080k (20800k total) for capture bttv: Host bridge is Advanced Micro Devices [AMD] AMD-760 [Irongate] System Controller bttv: Bt8xx card found (0). PCI: Found IRQ 12 for device 00:0c.0 PCI: Sharing IRQ 12 with 00:0a.0 PCI: Sharing IRQ 12 with 00:0c.1 bttv0: Bt878 (rev 17) at 00:0c.0, irq: 12, latency: 32, memory: 0xe3042000 bttv0: detected: Hauppauge WinTV [card=10], PCI subsystem ID is 0070:13eb bttv0: using: BT878(Hauppauge (bt878)) [card=10,insmod option] bttv0: Hauppauge/Voodoo msp34xx: reset line init [5] bttv0: i2c attach [client=EEPROM chip,ok] i2c-core.o: client [EEPROM chip] registered to adapter [bt848 #0](pos. 0). i2c-dev.o: Registered 'bt848 #0' as minor 1 i2c-core.o: adapter bt848 #0 registered as adapter 1. bttv0: Hauppauge eeprom: model=44371, tuner=Philips FM1236 (2), radio=yes bttv0: i2c: checking for MSP34xx @ 0x80... found bttv0: i2c: checking for TDA9875 @ 0xb0... not found bttv0: i2c: checking for TDA7432 @ 0x8a... not found bttv0: registered device video0 bttv0: registered device vbi0 bttv0: registered device radio0 i2c-core.o: driver i2c TV tuner driver registered. tuner: ignoring SMBus Via Pro adapter at 5000 i2c adapter [id=0x40002] tuner: probing bt848 #0 i2c adapter [id=0x10005] tuner: chip found @ 0xc2 bttv0: i2c attach [client=Philips NTSC,ok] i2c-core.o: client [Philips NTSC] registered to adapter [bt848 #0](pos. 1). i2c-core.o: driver i2c msp3400 driver registered. msp34xx: init: chip=MSP3435G-B6, has NICAM support msp3410: daemon started bttv0: i2c attach [client=MSP3435G-B6,ok] i2c-core.o: client [MSP3435G-B6] registered to adapter [bt848 #0](pos. 2). btaudio: driver version 0.6 loaded [digital+analog] PCI: Found IRQ 12 for device 00:0c.1 PCI: Sharing IRQ 12 with 00:0a.0 PCI: Sharing IRQ 12 with 00:0c.0 btaudio: Bt878 (rev 17) at 00:0c.1, irq: 12, latency: 32, memory: 0xe3043000 btaudio: registered device dsp0 [digital] btaudio: registered device dsp1 [analog] btaudio: registered device mixer0 Module Size Used by btaudio 10000 0 (unused) soundcore 3376 3 [btaudio] msp3400 14480 1 tuner 8368 1 bttv 66736 0 (unused) v4l2-common 4400 0 (unused) videodev 5664 3 [bttv] i2c-dev 3776 0 (unused) i2c-algo-bit 7136 1 [bttv] eeprom 3520 0 (unused) lm80 5456 0 (unused) i2c-proc 6288 0 [eeprom lm80] i2c-viapro 3840 0 (unused) i2c-core 12448 0 [msp3400 tuner bttv i2c-dev i2c-algo-bit eeprom lm80 i2c-proc i2c-viapro] -Nathan Bradshaw nb@xxxxxxxxxxxx
