Hi IVTV developers,
I've got a permanent offset between the audio and video in the
mpeg encoded output from my Hauppauge WinTV PVR-150 card, and am
looking for a way to fix it. The offset occurred sometime after
using ivtv-0.7.4 and switching to ivtv-0.10 (yes, I've been
living with it for many months). It may have happened when I
used the record-v4l2.pl program from a previous package.
I normally use the audio and composite video output from a VCR
as inputs to the card, but I see the same offset if I connect
a TV aerial directly to the RF input on the card. I'm thinking
that a register got clobbered at some point with some garbage
value, and am looking for some advice on how to clear it. I've
tried shutting down the computer and leaving it without power
(i.e. with the power cord disconnected) for about 20 minutes,
but that doesn't remove the offset. Any advice on how to clear
it would be much appreciated.
I'm currently using ivtv-0.10.5. The audio precedes the video
by about 165 ms. Here are some of the specs of my system:
Linux robpc3 2.6.21.3-smp #4 SMP Thu May 31 09:29:17 Local time zone must be
set--see zic x86_64 x86_64 x86_64 GNU/Linux
[EMAIL PROTECTED]:/scr2/movies# v4l2-ctl --all
Driver info:
Driver name : ivtv
Card type : Hauppauge WinTV PVR-150
Bus info : 0000:00:0e.0
Driver version: 2565
Capabilities : 0x01070051
Video Capture
VBI Capture
Sliced VBI Capture
Tuner
Audio
Radio
Read/Write
Format:
Type : Video Capture
Width/Height : 720/480
Pixel Format : MPEG
Field : Interlaced
Bytes per Line: 0
Size Image : 131072
Colorspace : Broadcast NTSC/PAL (SMPTE170M/ITU601)
Format:
Type : Sliced VBI Capture
Service Set :
Service Line 0: /
Service Line 1: /
Service Line 2: /
Service Line 3: /
Service Line 4: /
Service Line 5: /
Service Line 6: /
Service Line 7: /
Service Line 8: /
Service Line 9: /
Service Line 10: /
Service Line 11: /
Service Line 12: /
Service Line 13: /
Service Line 14: /
Service Line 15: /
Service Line 16: /
Service Line 17: /
Service Line 18: /
Service Line 19: /
Service Line 20: /
Service Line 21: /
Service Line 22: /
Service Line 23: /
I/O Size : 0
Format:
Type : VBI Capture
Sampling Rate : 27000000 Hz
Offset : 248 samples (9.18519e-06 secs after leading edge)
Samples per Line: 1440
Sample Format : GREY
Start 1st Field : 10
Count 1st Field : 12
Start 2nd Field : 273
Count 2nd Field : 12
Video input : 2 (Composite 1)
Audio input : 1 (Line In 1)
Frequency: 1076 (67.250000 MHz)
Video standard = 0x00001000
NTSC-M
Tuner:
Capabilities : 62.5 kHz multi-standard stereo lang1 lang2
Frequency range : 44.0 MHz - 958.0 MHz
Signal strength : 0%
Current audio mode : lang1
Available subchannels: mono lang2
I can provide more info if it would help.
Cheers,
Rob Komar
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