No, the different TV/DVD standards have different frame sizes. NTSC is 720 x 480 I believe (I'm in PAL land) PAL has 720 x 576.
There is also the so called "overscan" area of between 10 - 15%. In other words: around 10 to 15% of the outer edge of your image is actually not shown on your TV screen.
To have the images show well on the TV you don't need to crop them to the exact size in pixels but to the right aspect ratio. It is also advisable to resize your large images taken with multi megapixel cameras to somewhat closer to the actual TV screen resolution. I personally found an image width of 1200 pixels to show in good quality. Smaller or larger tends to show more grainy. The video mpeg encoder is not the best tool to resize still images, a good image processing software like PI or PS does a better job.
I've make 1 image on 720x576 and marked 4 corner with blue points.
When I put on my dvd point is out of screen, I can't view it..
??
there are setting I must set on ps4 ?
I live in Italy (pal)
thks for help
As I said before, 10 to 15% of your image size 720x576 are in the so called overscan or save zone and will not show up on your TV. This area varies with different TV's and is not equal on all sides. Even if you make your image 1200x900 (4:3), any part of the image around the edges are not shown, the software you use to burn the DVD is going to resize the image according to your TV standard.
If you want the whole image shown on the TV then you'll have to put a frame around your image = to the amount of overscan on your TV. This you will have to do in your image editing software. In PI you could set a batch task to put a frame around all your images you want to use in one single action.
Hi heinz-oz, thks for your help .. now is more clear
but I'have not understand 1 thing: I have take old dvd make from friends with dvd picture show 2 where image is 768x576. In this dvd image is 1:1 in my TV
The same with dvd picture show 4 is out of screen .. ?
It's got nothing to do with PictureShow. Your TV picture is limited to the TV standard frame size. Try not to confuse frame size with resolution, these are different terms. If I have a picture of 1600 x 1200 pixels it will show on my TV full screen because the aspect ratio is 4:3, same as the TV aspect ratio. However, I will lose some of the picture detail to the overscan area.
If I don't want to lose nothing from my image, I will have to increase the image canvas, not the image itself, to compensate for the overscan.
If my image is not 4:3 aspect ratio, some cropping will occur on the TV screen. My picture will either fill the screen horizontally or vertically and show black bars where the image doesn't fill the screen or, if the software used to make the slide show allows it, I can select to "Stretch" the image. It will fill the screen either vertically or horizontally and the other direction is either stretched or squashed. If the discrepancy is not much, you may not notice. However, if you have a picture taken in portrait mode you will notice it because the picture will be distorted to such a degree that you would not want to look at it.
A manual from ULead states that, if you are importing an image into video for NTSC, you should crop and save the image in 720x576, not 720x480-- supposedly to prevent distortion resulting from the fact that DV pixels are rectangular and image pictures from a digital camera have square pixels. Is this correct or should I import images that have been cropped and saved in 720x480 aspect ratio? Thanks.
You got me there, I have no experience whatsoever with NTSC, always worked to PAL. You are right with the non-sqare pixel issue though. Just don't know how it will affect still images.
You may have to experiment a little. No need in either case to crop to the exact pixel size of your TV standard, as long as you maintain the aspect ratio.
Come to think of it, neither 720 x 480 nor 720 x 576 is exactly 4:3 aspect ratio. 720 x 576 comes the closest at 4:3.2; never realised that before
So I guess what you are saying is that I should first crop the photo image to a 720x480 aspect ratio, then distort the picture by changing the aspect ratio to 720x576 for NTSC and save.
decfde wrote:So I guess what you are saying is that I should first crop the photo image to a 720x480 aspect ratio, then distort the picture by changing the aspect ratio to 720x576 for NTSC and save.
No, I'm not saying that. I would stick with the frame size of your project and let the program do the distorting with non-square pixel rendering. If that result was no good, I'd follow the ULEAD suggestions to size to 720x576.
thks