On Sunday 17 May 2009 04:06:04 Andy Walls wrote:
Thanks to a loaner PVR-350 from Hans, I've been able to implement VBI
support in the cx18 driver for non-NTSC video standards.
If you've got a 625 line PAL, SECAM, etc, video source and can test VBI
functions on a CX23418 based card, I'd like to hear how it works. The
patches for testing are here:
I've only been able to test with PAL with VPS in field 1 line 16 and WSS
in field 1 line 23. I wasn't able to figure out how to get Teletext B
out of the PVR-350, so I'd certainly like to hear if Teletext is
You can't get teletext out of the PVR-350. Only WSS and VPS. It's a hardware
I don't have access to my HVR1600 this week, I'll see if I can test it next
Note: to implement Raw VBI for 625 line/50 Hz systems to extract line 23
(WSS), I had to blank one extra line in each field. This means that
625/50 systems will be missing 1 line from the top of each field (e.g.
line 24 won't show). I thought that was better than having the fields
move up or down around if the user turned VBI on or off.
Hans Verkuil - video4linux developer - sponsored by TANDBERG
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