[ivtv-users] ivtv audio stops after some time

[Andy Walls]

On Thu, 2008-09-04 at 09:21 -0400, Jerry Geis wrote:
> This is hte output from hte status command. it says audio is not muted.
> 
> What command are the commands you want me to run to switch to composite 
> then tuner?

$ v4l2-ctl -d /dev/video0 -i2
$ v4l2-ctl -d /dev/video0 -i0


> Jerry
> 
>  ivtv0: =================  START STATUS CARD #0  =================
>    tveeprom 0-0050: Hauppauge model 25012, rev C5A3, serial# 9957334
>    tveeprom 0-0050: tuner model is TCL MFNM05-4 (idx 103, type 43)
>    tveeprom 0-0050: TV standards NTSC(M) (eeprom 0x08)
>    tveeprom 0-0050: audio processor is CX25843 (idx 37)
>    tveeprom 0-0050: decoder processor is CX25843 (idx 30)
>    tveeprom 0-0050: has radio, has no IR receiver, has no IR transmitter
>    tda9887 0-0043: Data bytes: b=0x14 c=0x30 e=0x44
>    tuner 0-0061: Tuner mode:      analog TV
>    tuner 0-0061: Frequency:       193.25 MHz
>    tuner 0-0061: Standard:        0x00001000
>    cx25840 0-0044: Video signal:              present
>    cx25840 0-0044: Detected format:           NTSC-M
>    cx25840 0-0044: Specified standard:        NTSC-M
>    cx25840 0-0044: Specified video input:     Composite 7
>    cx25840 0-0044: Specified audioclock freq: 48000 Hz
>    cx25840 0-0044: Detected audio mode:       mono

Hmm.  Only mono is odd for modern TV broadcasts.  Is it like this before
or after you lose audio?

Try turning the volume up.  Can you hear anything?


>    cx25840 0-0044: Detected audio standard:   BTSC

BTSC is right though.

>    cx25840 0-0044: Audio muted:               no
>    cx25840 0-0044: Audio microcontroller:     running

Yeah, it looks like the microcontroller is running.  

Regards,
Andy

>    cx25840 0-0044: Configured audio standard: automatic detection
>    cx25840 0-0044: Configured audio system:   BTSC
>    cx25840 0-0044: Specified audio input:     Tuner (In8)
>    cx25840 0-0044: Preferred audio mode:      stereo
>    wm8775 0-001b: Input: 2
>    ivtv0: Video Input: Tuner 1
>    ivtv0: Audio Input: Tuner 1
>    ivtv0: Tuner: TV
>    ivtv0: Stream: MPEG-2 Program Stream
>    ivtv0: VBI Format: No VBI
>    ivtv0: Video:  720x480, 30 fps
>    ivtv0: Video:  MPEG-2, 4x3, Variable Bitrate, 6000000, Peak 8000000
>    ivtv0: Video:  GOP Size 15, 2 B-Frames, GOP Closure
>    ivtv0: Audio:  48 kHz, Layer II, 384 kbps, Stereo, No Emphasis, No CRC
>    ivtv0: Spatial Filter:  Manual, Luma 1D Horizontal, Chroma 1D 
> Horizontal, 0
>    ivtv0: Temporal Filter: Manual, 8
>    ivtv0: Median Filter:   Off, Luma [0, 255], Chroma [0, 255]
>    ivtv0: Status flags: 0x00000000
>    ivtv0: Stream encoder MPEG: status 0x0118, 6% of 4096 KiB (128 
> buffers) in use
>    ivtv0: Stream encoder YUV: status 0x0000, 0% of 2046 KiB (194 
> buffers) in use
>    ivtv0: Stream encoder VBI: status 0x0000, 0% of 1023 KiB (60 buffers) 
> in use
>    ivtv0: Stream encoder PCM audio: status 0x0000, 0% of 1021 KiB (227 
> buffers) in use
>    ivtv0: Read MPEG/VBI: 1194354688/0 bytes
>    ivtv0: ==================  END STATUS CARD #0  ==================
> 
> 
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