Video Quality

Standard Definition Video of PAL and NTSC.

When standard-definition television signals are transmitted in digital form, its pixels have rectangular shape, as opposed to square pixels that are used in modern computer monitors and modern implementations of HDTV. The table below summarizes pixel aspect ratios for various kinds of SDTV video signal. Note that the actual image (be it 4:3 or 16:9) is always contained in the center 704 horizontal pixels of the digital frame, regardless of how many horizontal pixels (704 or 720) are used. In case of digital video signal having 720 horizontal pixels, only the center 704 pixels contain actual 4:3 or 16:9 image, and the 8 pixel wide stripes from either side are called nominal analogue blanking and should be discarded before displaying the image. Nominal analogue blanking should not be confused with overscan, as overscan areas are part of the actual 4:3 or 16:9 image.

Video
Format
Resolution
Pixel Ratio
resolution
PAL
4:3
720×576
12:11
786×576
PAL
16:9
720×576
16:11
1048×576
NTSC
4:3
720×480
10:11
654×480
NTSC
16:9
720×480
40:33
872×480

The pixel aspect ratio is always the same for corresponding 720 and 704 pixel resolutions because the center part of a 720 pixels wide image is equal to the corresponding 704 pixels wide image. Links: TV Buying Guide | Difference of all types of TV

This gallery shows you how the video looks like on a 42'' Sony flat TV. In general, the smaller the TV, the better the video looks. The following photos are taken by Sony NEX-5.

Video Quality Gallery

The following photos were shot by iphone3GS, on 42" Sony Brava TV, as you can notice the difference of iphone photos and camera photos. The actually video quality is best displayed on flat TV of 29"-34". Check iphone photos here.