Can someone explain to me how to rank the different high-definition video modes?
I understand the difference between progressive and interlaced but when it comes to determining how to rank them after that I’m lost.
For instance, at what point does 1080p stop being better than 1080i?
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1080p stops being better than 1080i when the picture stops moving.
The top broadcast modes for over-the-air networks are either 720p/60 or 1080i/30i, with networks deciding on their preference early on. It takes Blu-Ray or streaming to get 1080p, and for streaming, the quality is degraded by compression. For fast moving sports video, 720p is preferable despite the lower resolution because it has no tearing or combing effect of the picture from fast motion.
Progressive delivers a new complete picture every 1/60th of a second. Interlaced, made for old CRT TVs where the electron beam simply couldn’t draw the picture fast enough, only redraws half the lines every 1/60th of a second.
Streaming services like Netflix have native progressive programming, because that is the natural way for computers and digital displays to show a picture. They also can stream a movie at 24 frames per second (24p), the rate it was filmed.
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