Image resolution and DVD

I was making a slideshow of some of my images on DVD, but the images were being resampled and looked really dodgy (blocky & pixelated) when played Can anyone shed some light on the process?

Is there a "native" resolution for DVDs?

Is the resolution set by my software or by the DVD decoder?

Is there an image format the works best?

cheers

Lndr

720 x 482 is the highest resolution of standard NTSC DVDs that are visible, regardless if it's played on a progressive or non-progressive scan DVD player.

If you size your full screen images to something along those dimensions, you'll get rid of that blocky look that your slideshow/dvd-burning software is compressing (or stretching them) to.

The resolution, is set at the time you burn the DVD, you can burn disks with lower resolution, I guess if space were a huge commodity, but I can't imagine wanting to do that.

I haven't seen any difference between using a JPEG or a TIFF for my slideshows, they all end up in the DVD VOB format, so they are converted. A good piece of software (Photodex for example off the top of my head) will also apply some anti-flicker filtration when creating the final product, to keep photos from looking funny when displayed via television.

Also, when outputting, you'll want to use a color profile that is correct for the display hardware that you'll be displaying on. I haven't seen a TV yet that had a AdobeRGB color profile, so I use SMPTE-C which is supposidly the current color standard for North America, but it's very very similar to NTSC's color profile, so either is good in the US, where my slideshows are seen. PAL for Europe and everwhere else, etc. etc.

Hope this helps,

Joel

Thanks for the info. It helps

So 720 x 576 (PAL) is going to be the final size of my image no matter what goes into it . For some reason I always thought there had to be more (pixels) to it than that

Thanks for the tip on the colour profile as well.

cheers

Lndr

Most software allows you to set your resolution preverences, but if you don't do that it will default to the pre-set quality. What software are you using? and what resolution are your images to start off with...what is the file size?

Joe

Software is Power Producer 2 gold ... it has a high quality setting - which is 8mbps.

photos were 50mb tiff.

Lndr