Re: Vista media center, ATSC HDTV, and 853x480
- From: "JW" <JW@xxxxxxxxxxxx>
- Date: Thu, 6 Sep 2007 10:31:15 -0700
As I stated before all digital OTA channels are not broadcast in HD and each network such as ABC uses may use multiple channels ABC-1, ABC-2
It appears that you are either using your analog tuner( channel number not grater then 1000) or you are using a SD Digital channel broadcasting in 843x480
CBS,NBC and the PBS channels broadcast in 1080i when broadcasting HD resolutions OTA. ABC and FOX broadcast in 720P when broadcasting HD resolutions OTA.
I also have a 4:3 aspect ratio 1280x1024 19" monitor and my graphics card upscales all graphic and video inputs to that output resolution over either my VGA or my DVI connection.
I assume that your graphics card is also upscaling all of your outputs to your 16:10 aspect ratio 24" monitor.
"rcme" <rcme@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message news:45404F15-B1FC-44C1-8302-6EA13866DF08@xxxxxxxxxxxxxxxx
These shows were all recorded using Vista MC from the digital OTA channels
for the respective broadcasts (i.e. ABC, NBC, CBS, PBS, etc.).
The Vista MC computer has a 19" LCD (1280x1024) via VGA connector and the
Windows XP computer has a 24" LCD (1920x1200) via DVI connector. Although, I
am not clear what impact this would have in this case.
When viewing the shows from the Vista MC interface, they all fill the
horizontal dimension on the 19" monitor (i.e. 1280). As such, my expectation
was that they were all broadcast/recorded as 720p.
However, when viewing in WMP (in either Vista or XP), since WMP is able to
scale the image, it is not clear what the "actual" image size is. When I
started viewing these recorded TV shows on my Windows XP computer
(1920x1200), I would "fullscreen" the shows to 1080p (1920 wide with expected
black bars on top and bottom due to 1200 vs 1080), at which point they would
appear to be slightly "blurry". I suspected that WMP must be scaling the 720p
shows to create a 1080p image on the 24" monitor, thus creating the less than
optimal image.
I then tried to get WMP to resize its window to the expected 720p dimension
(to get the optimal image on a smaller window), and found that setting WMP to
"100%", didn't do anything (the WMP window just stayed where it was last). At
which point I checked the WMP properties for the recorded TV shows and found
that they are all 853x480 (according to WMP).
I have downloaded other 720p video (i.e. movie trailers, etc.) and the WMP
properties show the resolution on those to be the expected 1280x720.
Also, when viewing the downloaded 720p videos, they can be set to fullscreen
(1080p, creating some blur), however, setting WMP to "100%" will resize the
WMP window to the expected 720p window size. However, this doesn't seem to
work with the Vista MC recorded TV shows, setting them to "100%" doesn't
change the WMP window to the expected 720p size. In fact, setting WMP to 100%
doesn't seem to work at all with the Vista MC recorded TV shows, as the WMP
window just remains at whatever size it was last set to.
Is there some other way to determine the video properties for the Vista MC
recorded TV shows? The Windows Explorer (Vista and XP) file properties don't
provide any video details for these Vista MC recorded TV shows.
-rcme
"JW" wrote:
No all OTA digital channels are HD channels there is enough bandwidth
available for the networks to transmit both HD and SD digital broadcasts
simultaneously using sub channels.
Check with Titan TV.com to make sure what the schedule for actual HD
programs is on the individual channels and sub-channels in your area. Just
because the HDTV watermark is present does not mean that you are watching
the program in HD It may just mean that it is "filmed" in HD and then of
course it will only actually be in HD resolution on an HD resolution capable
digital channel and will be in SD resolution on a regular analog digital
channel or possibly in SD on a digital sub channel.
The normal clue that you are watching an actual HD program is that there are
no black or gray sidebars showing on widescreen display.
What type of display are you using with what resolution over what interface?
"RCMe" <rcme_1_nospam@xxxxxxxxxxx> wrote in message
news:uJIdbMD8HHA.3916@xxxxxxxxxxxxxxxxxxxxxxx
>I have a Vista Home Premium box with an HVR-950 HDTV tuner. The Vista MC
>works fine and I have recorded a bunch of OTA HDTV shows (or what I >thought
>were HDTV). Shows like Lost, Survivor, CSI, Dancing with the Stars, >Leno,
>Letterman, Warplane, etc. However, when playing them back in Windows >Media
>Player (Windows Vista and Windows XP), the WMP video properties for ALL
>these recorded TV shows indicates a resolution of 853x480. That's not >HDTV.
>What's up? I had thought that these shows would have been broadcast in >at
>least 720p, as almost all have a "HDTV" watermark in the corner.
>
> When watching these recorded shows in Vista MC and with WMP on my > Windows
> XP computers, they do look to be better than 480p, however, now I am > not
> so certain.
>
> Are the shows being broadcast in 853x480? Is Vista MC for some reason
> down-converting these shows to this non-HDTV resolution? Or has Vista > MC
> somehow tagged the file incorrectly? Or is WMP getting the resolution
> wrong?
>
> -rcme
>
.
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