Well over the weekend I verified that Mythtv was setup for NTSC, ran a
new cable from the demarc to eliminate cabling issues, and verified that
disabling mythtv from starting and rebooting I have the same issue with
ivtv-tune and cat'ing /dev/video0 to a file.
the ivtv module as well as the cx25840 module didn't like ntsc=m as an
option, and I've been unable to locate anything on disabling/forcing the
auto detection of the audio format.
It looks like a 2.6.16-1 kernel and ivtv 0.6.1 are on atrpms so I might
try that tonight.
For what it's worth it seems like it's a transient signal on the line
that causes the problem, as I did several tests this weekend scheduling
things to record on tuner0 that are on problem channels and they worked
fine. Of course when a schedule recording came up that I actually
wanted it didn't have audio :).
Anyone have any other thoughts on things I can try?
Below are the ivtvctl -a's for both tuner0 and tuner1 since I neglected
to include those originally.
Thanks!
-Berant
# ivtvctl -a -d /dev/video0
ioctl IVTV_IOC_G_CODEC ok
Codec parameters
aspect : 2
audio : 0x00e9
bframes : 3
bitrate_mode: 0
bitrate : 8000000
bitrate_peak: 9600000
dnr_mode : 0
dnr_spatial : 0
dnr_temporal: 8
dnr_type : 0
framerate : 0
framespergop: 15
gop_closure : 1
pulldown : 0
stream_type : 14
ioctl VIDIOC_G_FMT ok
Type : Video Capture
Width : 720
Height : 480
ioctl VIDIOC_QUERYCAP ok
Driver name : ivtv
Card type : WinTV PVR 500 (unit #1)
Bus info : 0000:03:08.0
Driver version: 1028
Capabilities : 0x01070011
ioctl: VIDIOC_ENUMINPUT
Input : 0
Name : Tuner
Type : 0x00000001
Audioset: 0x00000003
Tuner : 0x00000000
Standard: 0x0000000000003000 ( NTSC )
Status : 0
Input : 1
Name : Composite 0
Type : 0x00000002
Audioset: 0x00000003
Tuner : 0x00000000
Standard: 0x00000000007F7FFF ( PAL NTSC SECAM )
Status : 0
Input : 2
Name : Composite 1
Type : 0x00000002
Audioset: 0x00000003
Tuner : 0x00000000
Standard: 0x00000000007F7FFF ( PAL NTSC SECAM )
Status : 0
Input : 3
Name : S-Video 0
Type : 0x00000002
Audioset: 0x00000003
Tuner : 0x00000000
Standard: 0x00000000007F7FFF ( PAL NTSC SECAM )
Status : 0
Input : 4
Name : S-Video 1
Type : 0x00000002
Audioset: 0x00000003
Tuner : 0x00000000
Standard: 0x00000000007F7FFF ( PAL NTSC SECAM )
Status : 0
ioctl VIDIOC_G_INPUT ok
Video input = 0
ioctl: VIDIOC_ENUMOUTPUT
ioctl VIDIOC_G_OUTPUT failed: Invalid argument
ioctl: VIDIOC_ENUMAUDIO
Input : 0
Name : Tuner Audio In
Input : 1
Name : Audio Line 1
Input : 2
Name : Audio Line 2
Input : 3
Name : Audio Line 3
Input : 4
Name : Audio Line 4
ioctl VIDIOC_G_AUDIO ok
Audio input = 0: Tuner Audio In
ioctl VIDIOC_G_FREQUENCY ok
Frequency = 1076
ioctl: VIDIOC_ENUMSTD
index : 0
ID : 0x0000000000003000
Name : NTSC
Frame period: 1001/30000
Frame lines : 525
index : 1
ID : 0x00000000000000FF
Name : PAL
Frame period: 1/25
Frame lines : 625
index : 2
ID : 0x00000000007F0000
Name : SECAM
Frame period: 1/25
Frame lines : 625
ioctl VIDIOC_G_STD ok
Video standard = 0x00003000
ioctl: VIDIOC_QUERYCTRL
Brightness = 128
Contrast = 64
Saturation = 64
Hue = 0
Volume = 58880
Mute = 1
-----------------------------------------------------------------------------------------------------
# ivtvctl -a -d /dev/video1
ioctl IVTV_IOC_G_CODEC ok
Codec parameters
aspect : 2
audio : 0x00e9
bframes : 3
bitrate_mode: 0
bitrate : 8000000
bitrate_peak: 9600000
dnr_mode : 0
dnr_spatial : 0
dnr_temporal: 8
dnr_type : 0
framerate : 0
framespergop: 15
gop_closure : 1
pulldown : 0
stream_type : 14
ioctl VIDIOC_G_FMT ok
Type : Video Capture
Width : 720
Height : 480
ioctl VIDIOC_QUERYCAP ok
Driver name : ivtv
Card type : WinTV PVR 500 (unit #2)
Bus info : 0000:03:09.0
Driver version: 1028
Capabilities : 0x01030011
ioctl: VIDIOC_ENUMINPUT
Input : 0
Name : Tuner
Type : 0x00000001
Audioset: 0x00000003
Tuner : 0x00000000
Standard: 0x0000000000003000 ( NTSC )
Status : 0
Input : 1
Name : Composite 0
Type : 0x00000002
Audioset: 0x00000003
Tuner : 0x00000000
Standard: 0x00000000007F7FFF ( PAL NTSC SECAM )
Status : 0
Input : 2
Name : Composite 1
Type : 0x00000002
Audioset: 0x00000003
Tuner : 0x00000000
Standard: 0x00000000007F7FFF ( PAL NTSC SECAM )
Status : 0
Input : 3
Name : S-Video 0
Type : 0x00000002
Audioset: 0x00000003
Tuner : 0x00000000
Standard: 0x00000000007F7FFF ( PAL NTSC SECAM )
Status : 0
Input : 4
Name : S-Video 1
Type : 0x00000002
Audioset: 0x00000003
Tuner : 0x00000000
Standard: 0x00000000007F7FFF ( PAL NTSC SECAM )
Status : 0
ioctl VIDIOC_G_INPUT ok
Video input = 0
ioctl: VIDIOC_ENUMOUTPUT
ioctl VIDIOC_G_OUTPUT failed: Invalid argument
ioctl: VIDIOC_ENUMAUDIO
Input : 0
Name : Tuner Audio In
Input : 1
Name : Audio Line 1
Input : 2
Name : Audio Line 2
Input : 3
Name : Audio Line 3
Input : 4
Name : Audio Line 4
ioctl VIDIOC_G_AUDIO ok
Audio input = 0: Tuner Audio In
ioctl VIDIOC_G_FREQUENCY ok
Frequency = 1076
ioctl: VIDIOC_ENUMSTD
index : 0
ID : 0x0000000000003000
Name : NTSC
Frame period: 1001/30000
Frame lines : 525
index : 1
ID : 0x00000000000000FF
Name : PAL
Frame period: 1/25
Frame lines : 625
index : 2
ID : 0x00000000007F0000
Name : SECAM
Frame period: 1/25
Frame lines : 625
ioctl VIDIOC_G_STD ok
Video standard = 0x00003000
ioctl: VIDIOC_QUERYCTRL
Brightness = 128
Contrast = 64
Saturation = 64
Hue = 0
Volume = 58880
Mute = 0
Hans Verkuil wrote:
>You can force the TV standard using the ivtv ntsc=m module option, but
>still it shouldn't be necessary. What does ivtvctl -U say before and after
>running MythTV?
>
> Hans
>
>
>
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