HDTV and DVD Photos

Archived from groups: alt.tv.tech.hdtv,alt.video.dvd.tech,rec.video.dvd.tech (More info?)

"KSB" <nospam@nospam.net> wrote in news:f_SFd.6510$LR.3326@fe12.lga:

> Please tell me if my reasoning is correct so I will not continue to
> break my butt trying to get better pictures.
>
> I am using a Sony CRT HDTV capable of a max 1080i picture. I
> understand that is approximately equivalent to 1920x1080 resolution.
>
> I am also using a progressive scan DVD player capable of playing
> jpeg's as well as mpeg files. As I understand it, DVD output is about
> 640x480 max.
>
> Based on trial and error, the best pictures I seem to get are by
> burning jpegs and viewing them on my HDTV. It really doesn't seem to
> matter what resolution I burn to the DVD, as I can see no difference.
> While the picture is usually not that bad, it can best be described as
> adequate, not good (personal opinion).
>
> I have tried using several DVD slideshow authoring tools and, from a
> picture quality point of view, there is a serious degradation from
> jpegs.
>
> I get the impression that the greatest limiting factor is the DVD
> resolution. Nothing can be done until HD-DVD become available (along
> with burners) at a reasonable cost.
>
> Am I right?
>
> Does anybody have any suggestions to get better results then I am
> currently getting?
>
> By the way, the pictures look great on a computer screen, so it is not
> the picture itself.
>
> Thanks in advance.

DVD is limited to about 720 by 480. On my players all jpeg files are
scaled to fit my 4:3 screen which essentially means 640 by 480 is the
best I'm going to see.

Some hints, though. Work with 24 or 32-bit BMP, TGA or other non-
compressed format until you are ready to put the final image to JPG.
Jpeg is a lossy compression scheme and copying it into any kind of image
editing or processing software and back again will have overhead loss
(unless the jpeg was saved with zero compression).

Most of my stuff looks pretty reasonable on TV, though I've noticed that
some of my 3D anamorphs need a little tint and saturation adjustment to
work well with my Ultimate 3D glasses. On the other side of that, with a
little adjustment the 3D glasses from the Spy Kids movie work very well.

If a picture has a wider aspect than 4:3, you might try rescaling it to
an anamorphic 16:9 before viewing, but you'd have to make a whole CD of
them to make it work comfortably.

HD DVD recorders will undoubtedly improve on this!


--
Dave Oldridge+
ICQ 1800667

A false witness is worse than no witness at all.

Archived from groups: alt.tv.tech.hdtv,alt.video.dvd.tech,rec.video.dvd.tech (More info?)

In article <f_SFd.6510$LR.3326@fe12.lga>, nospam@nospam.net (KSB)
says...

> I get the impression that the greatest limiting factor is the DVD
> resolution. Nothing can be done until HD-DVD become available (along with
> burners) at a reasonable cost.
>
> Am I right?

You could always hook a high res laptop to your HDTV. They gave me a
Gateway at work that runs 1920 (or something near that) x 1054. If you
want the picture to look really good, photograph raw format in your
camera, and save it in lossless format, like TIFF instead of JPG, though
there is so much loss in the display that it probably won't make much
difference. Your TV is only about 2 megapixels.

--
http://home.teleport.com/~larryc