Podcast: Play in new window | Download (Duration: 13:43 — 12.6MB)

DSCN0593-c2b4s3 by 12fh

HD and HDV are both high definition video formats. Instead of playback formats, HD and HDV are recording formats. HD describes an image that is 1920×1080 or 1280×720 pixel images. HDV describes an image that uses rectangular pixels at a size of 1440×1080 that displays the same size as a 1920×1080 square pixel image (The pixels are 1.33 times wider than an HD pixel).

Bit rates vary between the two also, HDV has a bit rate of as high as half and as low as a quarter of an HD bit rate. Both formats use compression, but HDV uses interpolation and groups of pictures (gops) to create the necessary compression. HD also uses compression, but you have an option as to what kind of CoDec you want to use.