Standardized
interoperability specifications such as the
video coding standards produced by the
MPEG and the
ITU-T, and the audio coding standards produced by the MPEG, often specify only the
bitstream format and the decoding process. This allows encoder implementations to use any methods whatsoever that produce bitstreams which conform to the specified bitstream format. Normally, decoding of a bitstream can be initiated without having to start from the beginning of a
file, or the beginning of the data transmission. Some bitstreams are designed for this to occur, for example by using indexes or
key frames. Uses of
bit stream decoders (BSD): •
Graphics processing unit (GPU) •
H.264/MPEG-4 AVC •
Unified Video Decoder (UVD) the video decoding bit-stream technology from ATI Technologies/AMD •
PureVideo the video decoding bit-stream technology from Nvidia •
Quick Sync Video the video decoding and encoding bit-stream technology from Intel ==See also==