What is High Definition?
HDV 720p uses a resolution of 1280x720 square pixels. HDV 1080i uses a resolution of 1440×1080 pixels, but is still displayed with an aspect ratio of 16:9
means it has lower horizontal resolution than true 1080 HD formats (1920x1080)
HDV resolution, while falling short of true 1080 HD, is still higher than that of standard DV.
Box area denotes relative perceived resolution, not the intended shape of the screen, which is why the 1080i box is not as tall as the 1080p box.
this, the perceived detail of HDV is so much higher than that of a PAL
or NTSC DV format.
times for HDV are the same as DV. A 60 minute MiniDV cassette can store
60 minutes of either DV or HDV footage. As of yet, no HDV cameras can
record HDV at LP speed, so the maximum record time on one tape is 80 minutes,
as opposed to 120 with an 80 minute tape at LP.