05-11-2016, 07:37 PM
Actual transmission is now mostly 1440 x 1080i
Some 720p and 1920x1080 on satellite (but not the main Terrestrial channels)
720i doesn't seem to exist.
The USA also calls 720 x 480p transmission "HD"!
HD is only WS, 16:9. But it's increasingly rare to have square pixel transmission.
SD has very many formats and strangely some allowed on Transmission, not in the DVD spec. It can be WS or 4:3 and WS is often 544 x 576 to save cost (Bandwidth).
Sadly what counts is transmission, and storage not Studio formats specified in a less penny pinching age, though they are USA centric in data rate compatibility.
Some 720p and 1920x1080 on satellite (but not the main Terrestrial channels)
720i doesn't seem to exist.
The USA also calls 720 x 480p transmission "HD"!
HD is only WS, 16:9. But it's increasingly rare to have square pixel transmission.
SD has very many formats and strangely some allowed on Transmission, not in the DVD spec. It can be WS or 4:3 and WS is often 544 x 576 to save cost (Bandwidth).
Sadly what counts is transmission, and storage not Studio formats specified in a less penny pinching age, though they are USA centric in data rate compatibility.
