The ivtv README.vbi says:

---------------------------------------------------------------------------------------
 #define VBI_TYPE_TELETEXT       0x1     // Teletext (uses lines 6-22 for PAL, 
10-21 for NTSC)
#define VBI_TYPE_CC             0x4     // Closed Captions (line 21 NTSC, line 
22 PAL)
#define VBI_TYPE_WSS            0x5     // Wide Screen Signal (line 20 NTSC, 
line 23 PAL)
#define VBI_TYPE_VPS            0x7     // Video Programming System (PAL) 
(line 16)

Note that currently only Program Streams are supported!

...

TODO
====
...

5) Support the VBI data insertion for more stream types than just Program 
Stream.
----------------------------------------------------------------------------------------

Is this still up-to-date? No VBI Teletext for V4L2_MPEG_STREAM_TYPE_MPEG2_TS?

Does it also apply to the cx18 driver?

In the v4l2 specifications I can only find V4L2_SLICED_TELETEXT_B (Teletext 
System B) which is described as beeing for PAL/SECAM.
Is there also a way to slice vbi teletext data for NTSC? 

Greets,
Martin

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