Jump to content

Sd Aspect Ratio


Recommended Posts

From what I can see (read) DVB-T SD video is claimed to be 16:9 (1.77:1) aspect ratio, yet is MPEG2 720x576 wich is actually 11.25:9 (1.25:1)

This is like 30% difference - a big rounding off.

I know it gets scaled to fit display or side barred but why the inaccurate aspect ratio quoted in much DVB-T documentation.

Link to comment
Share on other sites



  • 1 month later...

The two most common aspect ratios heard mentioned are 4:3 (1.33:1, or traditional TV) and 16:9 (1.77:1, "widescreen" TV). Film releases are usually somewhere between 1.85:1 and 2.35:1, with Cinerama coming in at 3:1 or wider,the physical dimension of the panel, or the optical image that a projector throws on the wall,the number of physical pixels,Normal places the 4:3 picture horizontally centered on the screen between 2 vertical black bars,Full linearly stretches the 4:3 picture horizontally to fill the entire 16:9 screen.

Link to comment
Share on other sites



that is not misquoted it .this specification at the maximum rate...normal rate could be diffrent...and the calculation used is wrong the technique in both format is different ...means the pixel represent is different..That is mind buckling calculation and hard algorithms used for it ..It is a part of digital image and signal processing.

Link to comment
Share on other sites

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...
To Top