GeoffQ said:
1080p is an ATSC spec just the 24fps variant.
I believe the 1080p/30fps is also.
The problem then becomes the bandwidth requirements to transfer so much data:
* 720p60: 1280×720 gives 0.92 megapixels per frame. If we take a 24-bit color value per pixel (RGB), this means 2.76 MB data per frame, which multiplied with the 60fps gives 1.3 Gbps or 165 MB/s.
* 1080i60: 1920×1080 means a 2 megapixel frame which translates into 6.2MB per frame. The interlacing cuts the bitrate in half: 6.2MB x 60 / 2 = 1.49 Gbps or 186 MB/s.
* 1080p60 is obviously double the throughput of 1080i: 2.98 Gbps or 373 MB/s
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