QUALITY ADJUSTMENT USING A FRAGMENTED MEDIA STREAM

摘要

Media files such as MPEG-4 files are fragmented to allow for media creation, delivery, quality adjustment, and place shifting. Playback on a device can begin upon receiving a first MPEG-4 file fragment. Playback stoppage is detected and media stream position information along with quality level information is maintained at a content server. Playback can continue using the same device and media stream quality, a different media stream quality, or with a different device and different media stream quality. Additional MPEG-4 file fragments requested may be fragments corresponding to a higher or lower bit-rate stream configured for a different device associated with the user to allow a user to resume playback on a different device.