SageTV Community  

Go Back   SageTV Community > Hardware Support > Hardware Support

Notices

Hardware Support Discussions related to using various hardware setups with SageTV products. Anything relating to capture cards, remotes, infrared receivers/transmitters, system compatibility or other hardware related problems or suggestions should be posted here.

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 02-20-2006, 05:01 PM
disgust disgust is offline
Sage User
 
Join Date: Jan 2005
Posts: 59
need hd screenshots-- hardware advice?

I'm working on a Lost site. I need to capture high def screenshots to have on the site. right now I have a standard PVR-250. however, right now I'm just set up to recieve standard def signals.

here's an example of one of the screens (direct from source, I didn't change the dimensions, etc):



at first I was mostly content with this quality, but then I saw the screens from another site.



how are they achieving that sort of resolution? I thought "true" hd capture wasn't even possible? are they just upscaling the resolution of images?

in short: if I want to get the highest quality possible, should I be looking at hardware to capture in hd? can hardware capture in true hd-- ie, will I have a video that's 720/1080 pixels tall? what kind of hardware would you suggest for that? how much would I be looking at?
Reply With Quote
  #2  
Old 02-20-2006, 05:10 PM
stanger89's Avatar
stanger89 stanger89 is offline
SageTVaholic
 
Join Date: May 2003
Location: Marion, IA
Posts: 15,186
Grabbing screenshots out of a transport stream is trival. Just get yourself an OTA HD card, record the show, and grab some frames.

http://www.pcalchemy.com/index.php/c...e59d2a26081394

-edit

FWIW, I don't think either of those is HD.
Reply With Quote
  #3  
Old 02-20-2006, 05:13 PM
disgust disgust is offline
Sage User
 
Join Date: Jan 2005
Posts: 59
what is a "transport stream"? and "OTA"? sorry, some of this may be over my head.

if I buy one of those cards, will the quality of the screens improve significantly? can I record true hdtv with them, at the native 1080/720 resolution? how big are episodes like that?
Reply With Quote
  #4  
Old 02-20-2006, 05:28 PM
stanger89's Avatar
stanger89 stanger89 is offline
SageTVaholic
 
Join Date: May 2003
Location: Marion, IA
Posts: 15,186
Quote:
Originally Posted by disgust
what is a "transport stream"? and "OTA"? sorry, some of this may be over my head.
Transport Stream - a holder for MPEG-2 video and audio. It's like the MPGs Sage records, but designed for broadcast.

OTA - Over The Air, broadcast TV.

Quote:
if I buy one of those cards, will the quality of the screens improve significantly?
The quality will be better, I'll leave the qualifiers up to you:

Ignore the combing, this is video so better than film sharpness wise (Lost would be Film), the combing would be cleaned up by the deinterlacer.

Quote:
can I record true hdtv with them, at the native 1080/720 resolution?
Yes you can record the full 1080i/720p.

Quote:
how big are episodes like that?
About 9GB/hour.
Reply With Quote
  #5  
Old 02-20-2006, 05:43 PM
ToxMox's Avatar
ToxMox ToxMox is offline
Sage Icon
 
Join Date: Oct 2003
Location: NJ
Posts: 1,980
Looks to me like they scaled it up. I scaled your original file up to roughly the same size as the second image and the one I scaled looks a little better than the larger one from the other site.
Attached Images
File Type: jpg lostscaled.jpg (138.8 KB, 247 views)
Reply With Quote
  #6  
Old 02-20-2006, 05:48 PM
disgust disgust is offline
Sage User
 
Join Date: Jan 2005
Posts: 59
thank you both. I'm still a bit torn on whether or not it'd be worth updating to an hdtv card.

another question: I don't have an hdtv capable tv. if I get an hdtv card in my htpc, is that enough? or do I need additional equipment?
Reply With Quote
  #7  
Old 02-20-2006, 06:01 PM
Wheemer's Avatar
Wheemer Wheemer is offline
Sage Icon
 
Join Date: Dec 2004
Location: Deer Lake, NL, Canada
Posts: 1,493
What are these screenshots for? Seems like a lot of work, when that screenshot you grabbed looks pretty good to me.
Reply With Quote
  #8  
Old 02-20-2006, 06:03 PM
disgust disgust is offline
Sage User
 
Join Date: Jan 2005
Posts: 59
for a lost fansite I realize it's a decent bit of work, but considering that I'm doing all this work, I'd like them to look as good as possible
Reply With Quote
  #9  
Old 02-20-2006, 06:05 PM
stanger89's Avatar
stanger89 stanger89 is offline
SageTVaholic
 
Join Date: May 2003
Location: Marion, IA
Posts: 15,186
Quote:
Originally Posted by ToxMox
Looks to me like they scaled it up. I scaled your original file up to roughly the same size as the second image and the one I scaled looks a little better than the larger one from the other site.
Plus it's 1.33:1, not 1.78:1 like an HD capture should be. It really should be 1280x720 if it's a true HD capture from ABC.

Quote:
Originally Posted by disgust
thank you both. I'm still a bit torn on whether or not it'd be worth updating to an hdtv card.

another question: I don't have an hdtv capable tv. if I get an hdtv card in my htpc, is that enough? or do I need additional equipment?
It's enough to record HD (don't want to use the term "capture"*), and grab screenshots. But without an HDTV, you won't be able to watch it in HD (unless you're watching on your monitor).

*Capture, to me implies the grabbing of raw, uncompressed video from an external source. Capturing HD is completely impractical at the moment.
Reply With Quote
  #10  
Old 02-20-2006, 06:15 PM
Wheemer's Avatar
Wheemer Wheemer is offline
Sage Icon
 
Join Date: Dec 2004
Location: Deer Lake, NL, Canada
Posts: 1,493
Make sure you post a link to the site when it's ready... I love lost.
Reply With Quote
  #11  
Old 02-21-2006, 09:14 AM
clmolnar clmolnar is offline
Sage Advanced User
 
Join Date: Nov 2005
Posts: 129
Yes, looking for link!
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -6. The time now is 08:45 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Copyright 2003-2005 SageTV, LLC. All rights reserved.