Dynamic Adaptive Streaming over HTTP

Bit rate

Real-time computing

Streaming algorithm

Quality of experience

Operating system

Dash

Quality of service

Telecommunications

Economics

Computer science

Constant bitrate

Variable bitrate

Computer network

Physics

Latency (audio)

Upper and lower bounds

Mathematics

Optics

Video streaming

Low latency (capital markets)

Mathematical analysis

Operations management

Video quality

Metric (unit)

Wireless

Throughput

Adaptation (eye)

Multimedia

Modern video streaming uses adaptive bitrate (ABR) algorithms than run inside video players and continually adjust the quality (i.e., bitrate) of the video segments that are downloaded and rendered to the user. To maximize the quality-of-experience of the user, ABR algorithms must stream at a high bitrate with low rebuffering and low bitrate oscillations. Further, a good ABR algorithm is responsive to user and network events and can be used in demanding scenarios such as low-latency live streaming. Recent research papers provide an abundance of ABR algorithms, but fall short on many of the above real-world requirements.

From theory to practice