Re: [vdr] Replacing aging VDR for DVB-S2

2011-01-15 Thread Goga777
 In general, get a gt220, as it has built in audio hardware, so that
 you should get audio without clock drift relative to the hdmi output.
 It is also powerfull enough to do temporal spatial deinterlacing on
 1080i material.

what do you think about 

NVIDIA's GeForce GT 430
http://www.anandtech.com/show/3973/nvidias-geforce-gt-430

seems it's the best choice for vdr/htpc

- more cold than gt220
- more powerfull
- HDMI 1.4,
- 3D over HDMI
- Ethernet channel
- Audio return channel
- 4k × 2k Resolution Support



-- 
Удачи,
Игорь

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Re: [vdr] Replacing aging VDR for DVB-S2

2011-01-15 Thread VDR User
On Sat, Jan 15, 2011 at 1:09 PM, Goga777 goga...@bk.ru wrote:
 In general, get a gt220, as it has built in audio hardware, so that
 you should get audio without clock drift relative to the hdmi output.
 It is also powerfull enough to do temporal spatial deinterlacing on
 1080i material.

 what do you think about

 NVIDIA's GeForce GT 430
 http://www.anandtech.com/show/3973/nvidias-geforce-gt-430

 seems it's the best choice for vdr/htpc

 - more cold than gt220
 - more powerfull
 - HDMI 1.4,
 - 3D over HDMI
 - Ethernet channel
 - Audio return channel
 - 4k × 2k Resolution Support

It's a nice card but I'm not sure why you think it's the best choice
for VDR/htpc.  It's not going to give you any better image quality on
HD content then you get from a gt220 at half the price.  I don't see
any advantage for most users in spending the extra money for one.

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Re: [vdr] Replacing aging VDR for DVB-S2

2011-01-15 Thread Tony Houghton

On 15/01/11 21:49, VDR User wrote:

On Sat, Jan 15, 2011 at 1:09 PM, Goga777goga...@bk.ru  wrote:

In general, get a gt220, as it has built in audio hardware, so that
you should get audio without clock drift relative to the hdmi output.
It is also powerfull enough to do temporal spatial deinterlacing on
1080i material.


[Snip]


what do you think about
NVIDIA's GeForce GT 430


[Snip]


It's a nice card but I'm not sure why you think it's the best choice
for VDR/htpc.  It's not going to give you any better image quality on
HD content then you get from a gt220 at half the price.  I don't see
any advantage for most users in spending the extra money for one.


Even if it does run cooler than a GT220 it can't be by much judging by
the size of the heatsinks. Ones with fans might be too noisy in an HTPC,
and ones without will need a well-ventilated case, bearing in mind they
might be working quite hard decoding HD for long periods. So...

I wonder whether it might be possible to use a more eonomical card which
is only powerful enough to decode 1080i without deinterlacing it and
take advantage of the abundant CPU power most people have nowadays to
perform software deinterlacing. It may not be possible to have something
as sophisticated as NVidia's temporal + spatial, but some of the
existing software filters should scale up to HD without overloading the
CPU seeing as it wouldn't be doing the decoding too.

Alternatively, use software decoding, and hardware deinterlacing.
Somewhere on linuxtv.org there's an article about using fairly simple
OpenGL to mimic what happens to interlaced video on a CRT, but I don't
know how good the results would look.

BTW, speaking of temporal and spatial deinterlacing: AFAICT one means
combining fields to provide maximum resolution with half the frame rate
of the interlaced fields, and the other maximises the frame rate while
discarding resolution; but which is which? And does NVidia's temporal +
spatial try to give the best of both worlds through some sort of
interpolation?

--
TH * http://www.realh.co.uk

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Re: [vdr] Replacing aging VDR for DVB-S2

2011-01-15 Thread VDR User
On Sat, Jan 15, 2011 at 2:36 PM, Tony Houghton h...@realh.co.uk wrote:
 I wonder whether it might be possible to use a more eonomical card which
 is only powerful enough to decode 1080i without deinterlacing it and
 take advantage of the abundant CPU power most people have nowadays to
 perform software deinterlacing. It may not be possible to have something
 as sophisticated as NVidia's temporal + spatial, but some of the
 existing software filters should scale up to HD without overloading the
 CPU seeing as it wouldn't be doing the decoding too.

Well, you can get a gt220 for around $40USD which does full rate
temporal-spatial 1080i and allows you to use it with an old slow cpu's
that are dirt cheap if you don't already have one collecting dust in
your basement.  Not sure how much more economical you can get aside of
free.

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[vdr] new OSD system

2011-01-15 Thread Gero
Hello,

I read about the ongoing work at the OSD system.
I have to confess, that I don't really miss a truecolor OSD, but what I miss 
is the possibility to configure the OSD for each output-device separately.

Currently I use a backend-vdr with budget-cards and an old fashioned FF. My 
TV is plugged to the old FF and I watch HD through a frontend-client with 
xineliboutput. That's not bad at all, but one shortcoming I noticed is, that 
configuration works for all output-devices. 
I tried the cool anthra-skin for HD - but then I don't get any OSD on FF.

Same happens with keyboard. Currently its easy to distinguish the keys, as 
they are created from different systems and for so have different keycodes.
But when I update my TV to a HD system and use xineliboutput on the backend as 
well as the frontend, than there's no way to have separate keyboard 
configurations.
Why I want different setups?

At the vdr I use a standard keyboard and the frontend is my desktop, where I 
use a Natural keyboard from M$ - which has a completely different layout of 
function-keys and additional keys. So it would be nice, to have sections in 
remote.conf that could be separated by output-device. Really great would be, 
if that sections could be created based on the IP of the client :)

kind regards

Gero

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Re: [vdr] new OSD system

2011-01-15 Thread Gero
Hello,

VDR User wrote:
 I don't know about any of that but I wonder if the new osd system will
 be able to maintain widescreen HD resolution even when viewing 4:3 SD
 channels.  Or if it will behave as it currently does,
 stretches/shrinks according to the channel/recording you're watching.
 Preferrably it won't do that, or at least be something the user can
 toggle.  My output is always 1920x1080.  I opt not to scale SD content
 up to HD.  This means that when I'm watching 4:3 SD content in
 1920x1080, I have borders on the left  right, which I'm ok with.
 However, there's no reason I'm aware of why the osd can't still take
 advantage of the full 1920x1080.

That scaling, you're talking about is not related to the new OSD system.
Scaling is part of the output device and at least xineliboutput can be 
configured to not to scale.

I was talking about OSD only - independant of the stream-format.

In the example I wrote, anthra was configured with 1920x1080 - when I watch TV 
from FF and hit the menue button, the screen will change to black font on 
black background :)

As far as I understand a statement of Klaus, the OSD will be different 
depending on the output device.
So I wrote about my wish: if the OSD systems already are different, it would be 
nice to have different configurations too.

kind regards

Gero

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