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Posted by Pat Horridge on 10/10/06 08:37
"EASTVANTRADING" <evanlee@shaw.ca> wrote in message
news:1160423674.925567.142180@h48g2000cwc.googlegroups.com...
Re: Help needed. DVD playback on TV warped and distorted
Hi there,
Here's hoping you experts can help me out. I am trying to make a
video sequence out of black and white photographic stills, each
transitioned by fade out/in. I have had success in making a file that
plays back on the computer and monitor.
The problem is, when I make a DVD of this sequence and play it back on
a DVD player to a TV, the image becomes distorted: the bottom half of
the image bulges, stretches out towards the left and right, as if one
took the two bottom corners and pulled them outwards and then back in.
One can see the pushing-pulling effect in motion through the duration
of the image. It looks as if the bottom half is underwater or is viewed
through a fisheye lens. It is driving me crazy!
-The file plays fine on the PC/Mac, both from DVD and hard drive on a
monitor.
-If I activate an onscreen menu from the DVD player (not a DVD menu),
over the distorted video, it too becomes distorted.
-My commercial DVDs play fine
I have:
-Corrected for aspect ratio of the pixels & tried without correction as
well (square vs. rectangular)
-Tried a huge range of different image resolutions to start
-used TIFF and JPEGs
Made the video on:
Different computers MAC/PC, Final Cut/Ulead
-I even tried using a slide show program that output to DVD
-Two different DVD authoring programs
-Played back through 2 DVD players, 2 TVs
Possible things I haven't tried:
Using different media (I used FUJI DVD-R)
Using a third DVD player (the 2 I used were Toshiba, old & new)
Does anyone have any advice, or know what's going on here? I'm
afraid I maybe missed something really simple. Any help would be
appreciated!
Thanks,
Evan
Reply
If this is an image with a large area of black at the top of the picture and
a large area of whit at the bottom . then it is the actual TV that is at
fault not the disk.
As the TV has to work harder to display the white it can affect the scan
process causing the image to distort. You'll find it's better on some CRT
screens than others. it should look fine on a Flatscreen CRT.
Of course a design choice like this is what is giving you the issue.
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