[mythtv] 16/9 vs 4/3 dilemma.

Jon Burgess mythtv at jburgess.uklinux.net
Mon May 24 14:07:42 EDT 2004


Kenneth Aafløy wrote:

>Do you happen to know whether most tv output chips can output/insert this 
>control signal?
>  
>
I suspect any good TV out chip should have support for this.

Provided the hardware supports the feature it should take little more 
than poking one bit to activiate the output.

Of course it relies on the hardware manufacturers being open about the 
specs to say which bit needs to be poked.

It is supported by the DVB-S hardware & firmware according to
http://www.linuxtv.org/mailinglists/linux-dvb/2003/12-2003/msg00517.html

And the DXR3 card, using the ADV7170...
http://www.linuxtv.org/mailinglists/vdr/2003/04-2003/msg01304.html
Datasheet http://dxr3.sourceforge.net/download/hardware/ADV7170_71_0.pdf

The BT864 / 865 seem to support it as well, datasheet here
http://dxr3.sourceforge.net/download/hardware/l865a.pdf

The advantage of WSS is that it works even if the SCART is daisy chained 
through other devices.

The UK Digital TV group even seem to suggest that works when the output 
is recorded on a VCR
http://www.dtg.org.uk/reference/tutorial/AFD.htm

    Jon




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