[mythtv-users] PVR-350 on 4:3 and 16:9 screens

Steve Davies steve at one47.co.uk
Sun Dec 26 10:31:59 UTC 2004

Stroller wrote:
> On Dec 25, 2004, at 10:04 pm, Steve Davies wrote:
>> Steve Davies wrote:
>>> With a "regular" videocard, it is possible to tell X that the aspect 
>>> ratio of the output is 16:9, and the picture will auto-scale to fit 
>>> in this window. Is this also true of the PVR-350's TV output? I 
>>> capture UK DVB transmissions, and these are a mixture of 4:3 and 16:9 
>>> streams, often changing mid-stream.
>> Replying to my own post - It looks from the code and what docs I can 
>> find as if the MPEG stream will fill the 4:3 picture, and can be 
>> stretched/unstretched by the TV as desired, but will not be otherwise 
>> scaled by the PVR-350 (I assume it does not output the VBI aspect 
>> ratio indicators)
> I'm not sure if I'm understanding correctly, but maybe the "Wide-screen 
> tweaks" section of <http://wilsonet.com/mythtv/tips.php> would be 
> helpful for you?
Thanks Stroller, that page did make interesting reading, but I have 
already got widescreen working with standard videocard outputs - The 
issue is that I want to use a PVR350, and I can find lots of questions 
but few answers about how this card handles widescreen, or more 
importantly, MIXED aspect content.

I am tempted to buy one and make it work myself - The ivtv driver and 
underlying hardware seems to support all of the required scaling and 
res-change calls, so I would just need to do some experiments to see if 
it works how I think it does.


Steve Davies                   steve at one47.co.uk

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