[linux-dvb] Teletext and DMX_SET_PES_FILTER

[Ralph Metzler <rjkm@metzlerbros.de>]

Ragnar Sundblad writes:
 > I have problems recording+relaying and replaying teletext
 > with a TT-DVB card.
 > 
 > If I DMX_SET_PES_FILTER with input = DMX_IN_FRONTEND and
 > output = DMX_OUT_DECODER the teletext goes through and the tv
 > can decode it. This is as video and audio behaves.
 > 
 > If I DMX_SET_PES_FILTER with input = DMX_IN_FRONTEND and
 > output = DMX_OUT_TS_TAP I can read it on the dvr device, but
 > it doesn't come out on the tv signal.
 > 
 > If I try to replay it with input = DMX_IN_DVR and output =
 > DMX_OUT_DECODER nothing comes out on the tv signal.
 > 
 > Is this expected or is it a bug?

An expected bug :-)

The TI library in the firmware only allows to decode and 
re-insert teletext data into the TV signal if it comes 
from the frontend. It also does not give you the data if it 
is re-inserting it. 


Ralph


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