Re: [mythtv-users] record in HD, but watch in analog ?

2005-05-09 Thread Mudit Wahal
Joshua,

The 16:9 programs recorded in HD, how do you play them on analog TV
(4:3)  ? Do they play with black bars on top and bottom (just like
watching DVDs on a 4:3 TV) ?

Also, if I connect frontend to an HDTV (which has 16:9 aspect ratio ..
Panny DLP) using svideo, will I see the HD program in 16:9 (if its
recorded in native 16:9, say CSI, etc). Ofcourse, the quality will be
downres'd to svideo, but is the 16:9 aspect ratio still preserved ?

My main goal is to watch the HD programs in their native mode but
sacrifice the HD quality right now. Once I've figured out what I need
in the HD-frontend, I'll switch to HD output. But I still want to jump
on the HD bandwagon. (It'll be better than watching taped shows on a
vcr getting signals from a rooftop analog antenna ! the vcr is
connected to a panny DLP tv .. talk about waste of resources )

Thanks
Mudit

On 5/9/05, Robert Tsai <[EMAIL PROTECTED]> wrote:
> On Mon, May 09, 2005 at 03:56:07PM -0400, Joshua M. Thompson wrote:
> > The only annoyance I've found so far is that some stations like to
> > transmit 4:3 programs in a 16:9 signal with black bars and I'll have
> > to manually adjust the aspect ratio on those to make it fill the
> > screen. On the bright side, my local Fox station does this sometimes
> > but keeps the Fox network logo off in the right hand side bar, so it
> > doesn't obscure the video at all. :)
> 
> Aren't the "Zoom 4:3" and "Zoom 16:9" options meant to address this,
> so that you don't have to twiddle with the manual adjust?
> 
> --Rob
> 
> 
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Re: [mythtv-users] record in HD, but watch in analog ?

2005-05-09 Thread Robert Tsai
On Mon, May 09, 2005 at 03:56:07PM -0400, Joshua M. Thompson wrote:
> The only annoyance I've found so far is that some stations like to
> transmit 4:3 programs in a 16:9 signal with black bars and I'll have
> to manually adjust the aspect ratio on those to make it fill the
> screen. On the bright side, my local Fox station does this sometimes
> but keeps the Fox network logo off in the right hand side bar, so it
> doesn't obscure the video at all. :)

Aren't the "Zoom 4:3" and "Zoom 16:9" options meant to address this,
so that you don't have to twiddle with the manual adjust?

--Rob


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Re: [mythtv-users] record in HD, but watch in analog ?

2005-05-09 Thread Mudit Wahal
So which machine is downscaling ? frontend or backend ?

My backend is going to be a sempron 3000+. Since I dont need much
horsepower in the backend, I guess a sempron 3000+ should be ok (as
per tomshardware.com mega cpu list, the sempron 3000+ is about 5-10%
slower than athlon xp 3000+ for audio/video encoding purposes).

My present frontend is going to be a sempron 2600+ box, with geforce
mx440 with svideo out. This is a temp solution. My permanent frontend
for the analog TV will be the media mvp (if I can get it to work). The
media mvp has builtin mpeg decoder with svideo out.

My main issue is if I watch HD recorded/live on analog TV, how much
horsepower do I need to downres (and where ? front or back ?)

Thanks

Mudit

On 5/9/05, Mario Limonciello <[EMAIL PROTECTED]> wrote:
> My wonder is this downscaling of the HD, can a lower power machine
> play these HD recordings after the downscaling?  So i guess the better
> question is - which takes more power
> 
> Downscaling to 800x600 or 1024x768
> or
> Outputing at 720p or 1080i
> 
> On 5/9/05, Joshua M. Thompson <[EMAIL PROTECTED]> wrote:
> > On Mon, 2005-05-09 at 12:19 -0700, Mudit Wahal wrote:
> > > I'm building a backend where I'm going to put one HD3000 card. My
> > > frontend is still up in the air (several variables). In the meantime,
> > > I still want to connect a basic frontend with tv-out (svideo) to
> > > analog TV.
> > >
> > > Will I be able to play the programs recorded in HD in the backend on
> > > an analog TV (connected via a frontend-svideo) ?
> > >
> > > Any gotachs/magic incantations/etc I need to do at the backend so the
> > > transition from the HD recorded(or live) plays fine on analong
> > > frontend ?
> >
> > I have that exact setup at my house. My main frontend downstairs is a P4
> > 3.06 that is also the master backend, and has a ivtv card connected to
> > my Dish receiver for watching satellite channels. It is connected with
> > svideo+spdif to my AV receiver and TV. Upstairs I have another
> > front/backend combo with the pcHDTV in it that records OTA HDTV using my
> > attic antenna (though sadly it's not fast enough to watch HD). Even on
> > my 10 year old trinitron TV the HDTV recordings are still very
> > noticeably better than anything I ever got even directly off my sat
> > receiver, let alone through the capture card.
> >
> > I often sit in my home office and watch the HDTV recordings on my Linux
> > workstation, because once you've watched real HD it's hard to go back.
> > Hell even Family Guy looks better in HD! :)
> >
> > The only annoyance I've found so far is that some stations like to
> > transmit 4:3 programs in a 16:9 signal with black bars and I'll have to
> > manually adjust the aspect ratio on those to make it fill the screen. On
> > the bright side, my local Fox station does this sometimes but keeps the
> > Fox network logo off in the right hand side bar, so it doesn't obscure
> > the video at all. :)
> >
> > --
> > Joshua M. Thompson <[EMAIL PROTECTED] >
> >
> >
> > ___
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> >
> >
> >
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Re: [mythtv-users] record in HD, but watch in analog ?

2005-05-09 Thread Joshua M. Thompson
On Mon, 2005-05-09 at 16:03 -0400, Mario Limonciello wrote:
> My wonder is this downscaling of the HD, can a lower power machine
> play these HD recordings after the downscaling?  So i guess the better
> question is - which takes more power
> 
> Downscaling to 800x600 or 1024x768
> or 
> Outputing at 720p or 1080i

The MPEG2 decoding is what eats up most of the CPU, and you still have
to decode it in order to rescale it, so you'd actually use more CPU
power watching it rescaled than watching it as its native resolution.

-- 
Joshua M. Thompson <[EMAIL PROTECTED]>

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Re: [mythtv-users] record in HD, but watch in analog ?

2005-05-09 Thread Mario Limonciello
My wonder is this downscaling of the HD, can a lower power machine
play these HD recordings after the downscaling?  So i guess the better
question is - which takes more power

Downscaling to 800x600 or 1024x768
or 
Outputing at 720p or 1080i

On 5/9/05, Joshua M. Thompson <[EMAIL PROTECTED]> wrote:
> On Mon, 2005-05-09 at 12:19 -0700, Mudit Wahal wrote:
> > I'm building a backend where I'm going to put one HD3000 card. My
> > frontend is still up in the air (several variables). In the meantime,
> > I still want to connect a basic frontend with tv-out (svideo) to
> > analog TV.
> >
> > Will I be able to play the programs recorded in HD in the backend on
> > an analog TV (connected via a frontend-svideo) ?
> >
> > Any gotachs/magic incantations/etc I need to do at the backend so the
> > transition from the HD recorded(or live) plays fine on analong
> > frontend ?
> 
> I have that exact setup at my house. My main frontend downstairs is a P4
> 3.06 that is also the master backend, and has a ivtv card connected to
> my Dish receiver for watching satellite channels. It is connected with
> svideo+spdif to my AV receiver and TV. Upstairs I have another
> front/backend combo with the pcHDTV in it that records OTA HDTV using my
> attic antenna (though sadly it's not fast enough to watch HD). Even on
> my 10 year old trinitron TV the HDTV recordings are still very
> noticeably better than anything I ever got even directly off my sat
> receiver, let alone through the capture card.
> 
> I often sit in my home office and watch the HDTV recordings on my Linux
> workstation, because once you've watched real HD it's hard to go back.
> Hell even Family Guy looks better in HD! :)
> 
> The only annoyance I've found so far is that some stations like to
> transmit 4:3 programs in a 16:9 signal with black bars and I'll have to
> manually adjust the aspect ratio on those to make it fill the screen. On
> the bright side, my local Fox station does this sometimes but keeps the
> Fox network logo off in the right hand side bar, so it doesn't obscure
> the video at all. :)
> 
> --
> Joshua M. Thompson <[EMAIL PROTECTED] >
> 
> 
> ___
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> mythtv-users@mythtv.org 
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> 
> 
>
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Re: [mythtv-users] record in HD, but watch in analog ?

2005-05-09 Thread David George
On 5/9/2005 3:40 PM, Trey Boudreau wrote:
On Mon, May 09, 2005 at 03:24:38PM -0400, David George wrote:
 

On 5/9/2005 3:19 PM, Mudit Wahal wrote:
   

Will I be able to play the programs recorded in HD in the backend on
an analog TV (connected via a frontend-svideo) ?
 

Yes, no problem.  One of my frontends has an MX-4000 card using S-Video 
out.  You won't get HD res, but you can display HD programs on an analog TV.
   

Out of curiosity, do you have performance issues down-scaling 1080i or
720p content?
 


Nope, no performance issues.  Of course this particular frontend is a P4 
2.8 w/1Meg cache so I probably wouldn't notice performance problems 
anyway.  It isn't hyperthreaded, but I had no problems displaying 1080i 
or 720p (actually scaling 720p to 540p as my TV doesn't support 720p) 
back when I was using it with a 9A60 to convert VGA to component video.

--
David
HDTV frontend I'm working on (pictures, mythmon source)
 http://mythhd.info
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Re: [mythtv-users] record in HD, but watch in analog ?

2005-05-09 Thread Joshua M. Thompson
On Mon, 2005-05-09 at 12:19 -0700, Mudit Wahal wrote:
> I'm building a backend where I'm going to put one HD3000 card. My
> frontend is still up in the air (several variables). In the meantime,
> I still want to connect a basic frontend with tv-out (svideo) to
> analog TV.
> 
> Will I be able to play the programs recorded in HD in the backend on
> an analog TV (connected via a frontend-svideo) ?
> 
> Any gotachs/magic incantations/etc I need to do at the backend so the
> transition from the HD recorded(or live) plays fine on analong
> frontend ?

I have that exact setup at my house. My main frontend downstairs is a P4
3.06 that is also the master backend, and has a ivtv card connected to
my Dish receiver for watching satellite channels. It is connected with
svideo+spdif to my AV receiver and TV. Upstairs I have another
front/backend combo with the pcHDTV in it that records OTA HDTV using my
attic antenna (though sadly it's not fast enough to watch HD). Even on
my 10 year old trinitron TV the HDTV recordings are still very
noticeably better than anything I ever got even directly off my sat
receiver, let alone through the capture card.

I often sit in my home office and watch the HDTV recordings on my Linux
workstation, because once you've watched real HD it's hard to go back.
Hell even Family Guy looks better in HD! :)

The only annoyance I've found so far is that some stations like to
transmit 4:3 programs in a 16:9 signal with black bars and I'll have to
manually adjust the aspect ratio on those to make it fill the screen. On
the bright side, my local Fox station does this sometimes but keeps the
Fox network logo off in the right hand side bar, so it doesn't obscure
the video at all. :)

-- 
Joshua M. Thompson <[EMAIL PROTECTED]>

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Re: [mythtv-users] record in HD, but watch in analog ?

2005-05-09 Thread Trey Boudreau
On Mon, May 09, 2005 at 03:24:38PM -0400, David George wrote:
> 
> On 5/9/2005 3:19 PM, Mudit Wahal wrote:
> 
> >I'm building a backend where I'm going to put one HD3000 card. My
> >frontend is still up in the air (several variables). In the meantime,
> >I still want to connect a basic frontend with tv-out (svideo) to
> >analog TV.
> >
> >Will I be able to play the programs recorded in HD in the backend on
> >an analog TV (connected via a frontend-svideo) ?
> > 
> >
> Yes, no problem.  One of my frontends has an MX-4000 card using S-Video 
> out.  You won't get HD res, but you can display HD programs on an analog TV.
> 
Out of curiosity, do you have performance issues down-scaling 1080i or
720p content?

-- Trey
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Re: [mythtv-users] record in HD, but watch in analog ?

2005-05-09 Thread David George
On 5/9/2005 3:19 PM, Mudit Wahal wrote:
I'm building a backend where I'm going to put one HD3000 card. My
frontend is still up in the air (several variables). In the meantime,
I still want to connect a basic frontend with tv-out (svideo) to
analog TV.
Will I be able to play the programs recorded in HD in the backend on
an analog TV (connected via a frontend-svideo) ?
 

Yes, no problem.  One of my frontends has an MX-4000 card using S-Video 
out.  You won't get HD res, but you can display HD programs on an analog TV.

Any gotachs/magic incantations/etc I need to do at the backend so the
transition from the HD recorded(or live) plays fine on analong
frontend ?
 

Nope, as long as your S-Video output is configured to display SD it 
should scale the HD to whatever your output supports.

Thanks in Advance!
 

Your welcome.
--
David
HDTV frontend I'm working on (pictures, mythmon source)
 http://mythhd.info
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