MPEG-DASH and HLS both use segments. I think one reason is to allow for dynamic quality switching: if the bandwidth drops, the player can simply start pulling s

MPEG-DASH and HLS both use segments. I think one reason is to allow for dynamic quality switching: if the bandwidth drops, the player can simply start pulling segments encoded at a lower bitrate. This is harder to do with byte-range, since bytes don't map to time cleanly.