No Sound Through Video Capture Card
I'm building a Linux system specifically for video capture in prep for
yet another video games review site I want to attempt. She is running
Debian Sid with Enlightenment as her desktop.
I am having a helluva time trying to get things working properly.
First of all, I just installed my old PCTV (bt878 based) TV tuner that
used to work fine for me years ago. On this, I am getting video fine,
but not getting any sound through the card I tried connecting the
speakers directly to the card's line out and also tried running a
patch cable from line out to the sound card's line in and then
connecting the speakers to the sound card. Both configurations
resulted in no sound at all.
Additionally, XAWTV for some reason is not saving my settings when I
exit. Why would that be? Also, captured video when played back
through vlc as well as when played online, is tearing pretty bad
(looks okay when played on the old TV though). It is also running a
little too fast. I recorded at 24fps, thinking that was the NTSC
standard for video. Was that an incorrect guess? Here is a clip,
captured from a Wii game showing the tearing and slightly too fast
playback (don't laugh, this is being done for the amusement of my
young neices and nephews next time I go visit them. :p
http://s4.photobucket.com/albums/y129/Scarletdown/Animations/?action=view¤t=DDR-Davy-Crockett.mp4
The tearing is really noticeable when Pluto zips across the stage as
well as halfway through, when the dancers really start shaking it.
In addition to the internal capture card, this system also has two
other devices that should also be able to capture video. The first is
the video card itself, an ATI Rage 128 Pro AGP 4X, which has TV (aka
composite) in as well as what I am guessing is S-Video in (not
positive on that since the port has significantly more than 4 pins
unlike the S-Video ports on my AV switch). The other is an external
ATI TV Wonder USB TVWonder, which has coax, composite, and S-Video
inputs.
When I installed and ran XAWTV after connecting the USB device (before
installing the bt878 card), it crashed with a complaint that there was
no video grabber device found. dmesg showed both the usb capture
device and the PCI bt878 card and lspci showed the video card, but no
mention was made of its TV capture feature. However, I am not certain
if there was supposed to be any separate entries for that.
Anyway, here are the relevant lines from dmesg and the output from lspci
[ 12.442025] Linux video capture interface: v2.00
[ 12.618237] bttv: driver version 0.9.18 loaded
[ 12.618253] bttv: using 8 buffers with 2080k (520 pages) each for capture
[ 12.620236] bttv: Bt8xx card found (0).
[ 12.620333] bttv 0000:00:0b.0: PCI INT A -> Link[LNKD] -> GSI 11
(level, low) -> IRQ 11
[ 12.620373] bttv0: Bt878 (rev 2) at 0000:00:0b.0, irq: 11, latency:
32, mmio: 0xeb005000
[ 12.620534] bttv0: using: *** UNKNOWN/GENERIC *** [card=0,autodetected]
[ 12.620548] IRQ 11/bttv0: IRQF_DISABLED is not guaranteed on shared IRQs
[ 12.620646] bttv0: gpio: en=00000000, out=00000000 in=003fc0ff [init]
[ 12.621924] tveeprom 0-0050: Huh, no eeprom present (err=-6)?
[ 12.621943] bttv0: tuner type unset
[ 12.622745] bttv0: registered device video0
[ 12.623550] bttv0: registered device vbi0
00:00.0 Host bridge: ALi Corporation M1541 (rev 04)
00:01.0 PCI bridge: ALi Corporation M1541 PCI to AGP Controller (rev 04)
00:02.0 USB Controller: ALi Corporation USB 1.1 Controller (rev 03)
00:07.0 ISA bridge: ALi Corporation M1533/M1535/M1543 PCI to ISA
Bridge [Aladdin IV/V/V+] (rev c3)
00:08.0 Multimedia audio controller: C-Media Electronics Inc CM8738 (rev 10)
00:09.0 Ethernet controller: 3Com Corporation 3c905C-TX/TX-M [Tornado] (rev 78)
00:0a.0 USB Controller: NEC Corporation USB (rev 43)
00:0a.1 USB Controller: NEC Corporation USB (rev 43)
00:0a.2 USB Controller: NEC Corporation USB 2.0 (rev 04)
00:0b.0 Multimedia video controller: Brooktree Corporation Bt878 Video
Capture (rev 02)
00:0b.1 Multimedia controller: Brooktree Corporation Bt878 Audio
Capture (rev 02)
00:0f.0 IDE interface: ALi Corporation M5229 IDE (rev c1)
01:00.0 VGA compatible controller: ATI Technologies Inc Rage 128
PF/PRO AGP 4x TMDS
If I need to provide any further info, just give the word and I will
see what I can dig up. In summary:
1: bt878 card is not putting out any audio.
2: Captured video from XAWTV through the bt878 card tears when viewed
on an LCD monitor but does not seem to tear on an old fashioned CRT
TV.
3: Captured video plays back a little too fast.
4: XAWTV is not recognizing the TV Capture capability of my video card.
5: The external USB TV capture device is not recognized by XAWTV.
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