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Dynamic Adaptive Streaming over HTTP (DASH), also known as MPEG-DASH, is an adaptive bitrate streaming technique that enables high quality streaming of media content over the Internet delivered from conventional HTTP web servers. Similar to Apple's HTTP Live Streaming (HLS) solution, MPEG-DASH works by breaking the content into a sequence of small segments, which are served over HTTP. An early HTTP web server based streaming system called SProxy was developed and deployed in the Hewlett Packard Laboratories in 2006.[1][2] It showed how to use HTTP range requests to break the content into small segments. SProxy shows the effectiveness of segment based streaming, gaining best Internet penetration due to the wide deployment of firewalls, and reducing the unnecessary traffic transmission if a user chooses to terminate the streaming session earlier before reaching the end. Each segment contains a short interval of playback time of content that is potentially many hours in duration, such as a movie or the live broadcast of a sport event. The content is made available at a variety of different bit rates, i.e., alternative segments encoded at different bit rates covering aligned short intervals of playback time. While the content is being played back by an MPEG-DASH client, the client uses a bit rate adaptation (ABR) algorithm[3] to automatically select the segment with the highest bit rate possible that can be downloaded in time for playback without causing stalls or re-buffering events in the playback.[4] The current MPEG-DASH reference client dash.js[5] offers both buffer-based (BOLA[6]) and hybrid (DYNAMIC[4]) bit rate adaptation algorithms. Thus, an MPEG-DASH client can seamlessly adapt to changing network conditions and provide high quality playback with few stalls or re-buffering events.
MPEG-DASH is the first adaptive bit-rate HTTP-based streaming solution that is an international standard.[7] MPEG-DASH should not be confused with a transport protocol — the transport protocol that MPEG-DASH uses is TCP. MPEG-DASH uses existing HTTP web server infrastructure that is used for delivery of essentially all World Wide Web content. It allows devices like Internet-connected televisions, TV set-top boxes, desktop computers, smartphones, tablets, etc. to receive multimedia content (video, TV, radio, etc.) delivered via the Internet, coping with variable Internet receiving conditions. Standardizing an adaptive streaming solution is meant to provide confidence to the market that the solution can be adopted for universal deployment, compared to similar but more proprietary solutions like Smooth Streaming by Microsoft, or HDS by Adobe. Unlike HDS, or Smooth Streaming, DASH is codec-agnostic, which means it can use content encoded with any coding format, such as H.265, H.264, VP9, etc.[8]
^Chen, Songqing; Shen, Bo; Tan, Wai-tian; Wee, Susie; Zhang, Xiaodong (2006-07-09). "A Case for Internet Streaming via Web Servers". 2006 IEEE International Conference on Multimedia and Expo. pp. 2145–2148. doi:10.1109/ICME.2006.262660. eISSN 1945-788X. ISBN 1-4244-0367-7. ISSN 1945-7871. S2CID 9202042.
^Chen, Songqing; Shen, Bo; Wee, Susie; Zhang, Xiaodong (2007-07-23). "SProxy: A Caching Infrastructure to Support Internet Streaming". IEEE Transactions on Multimedia. 9 (5): 1062–1072. CiteSeerX 10.1.1.74.4838. doi:10.1109/TMM.2007.898943. ISSN 1520-9210. S2CID 870854.
^"ABR Logic". GitHub.
^ ab"From Theory to Practice: Improving Bitrate Adaptation in the DASH Reference Player, by Spiteri, Sitaraman and Sparacio, ACM Multimedia Systems Conference, June 2018" (PDF).
their adaptive bit rate streaming (US patent number 7818444). DynamicAdaptiveStreamingoverHTTP (DASH), also known as MPEG-DASH, is the only adaptive bit-rate...
HTTP Live Streaming (also known as HLS) is an HTTP-based adaptive bitrate streaming communications protocol developed by Apple Inc. and released in 2009...
segment information in the streaming technique DynamicAdaptiveStreamingoverHTTP (DASH) Managed Pressure Drilling, an adaptive oil drilling process Markovian...
3 – 3D Audio. MPEG-DASH (2012): Information technology – DynamicadaptivestreamingoverHTTP (DASH). (ISO/IEC 23009) Part 1 – Media presentation description...
US "Architecture for Robust and Efficient Control of DynamicAdaptive Video StreamingoverHTTP" 2014 - Google Faculty Award, Google US for the research...
library which provides an object-oriented interface to the DynamicAdaptiveStreamingoverHTTP (DASH) standard. It is also the official reference implementation...
MPEG-DASH, HTTP Origin. Version 3.6 was released June 10, 2013. Wowza Media Server 3.6 added basic support for DynamicAdaptiveStreamingoverHTTP (DASH)...
"HTML5 Player for AdaptiveStreaming from Bitmovin". Bitmovin. January 22, 2016. "DASH-JS | ITEC – DynamicAdaptiveStreamingoverHTTP". "A reference client...
Flash Streaming of DRM protected content in HTML5 "ITEC – DynamicAdaptiveStreamingoverHTTP". aau.at. Eric Schumacher-Rasmussen (6 October 2014). "The...
Source Extensions (MSE), and DynamicAdaptiveStreamingoverHTTP (DASH). In addition, Widevine supports the HTTP Live Streaming (HLS) protocol, developed...
Microsoft, and other companies, DynamicAdaptiveStreaming, known as MPEG-DASH, was published as the new HTTP-based adaptivestreaming standard. The mid-2000s...
advance (i.e. because it was dynamically generated, etc.) then the header "Content-Length: number" was not present in HTTP headers and the client assumed...
support for X3D, W3C SVG Tiny 1.2, and OMA/3GPP/ISMA and MPEG DynamicAdaptiveStreamingoverHTTP (MPEG-DASH) features. 3D support is available on embedded...
balancing (computing) Country code URL redirection CNAME record DynamicAdaptiveStreamingoverHTTP S. Puopolo, M. Latouche, F. Le Faucheur, and J. Defour. Content...
a variety of Unix-based OSs and could serve dynamically generated content by implementing the POST HTTP method and the CGI to communicate with external...
switched dynamically and near-seamlessly at any time during the video viewing. The main protocols for adaptiveHTTPstreaming include Smooth Streaming (by...
street maps and updating in real-time. STREAMS implements adaptive traffic management through a feature called "Dynamic Plan Selection". Depending on the density...
commercially unsuccessful digital recording system based on adaptive delta modulation. See DBX 700. Adaptive delta modulation or Continuously variable slope delta...
transmission through features such as multi-path delivery, fail-over, and multi-streaming. "Stream Control Transmission Protocol (SCTP)". Hewlett-Packard Development...
nickname "TCP/2". QUIC works hand-in-hand with HTTP/3's multiplexed connections, allowing multiple streams of data to reach all the endpoints independently...
Netflix is an American subscription video on-demand over-the-top streaming service. The service primarily distributes original and acquired films and television...
Services. Media Stream Source API. The Media Stream Source is the API responsible for enabling adaptivestreaming of media. Adaptivestreaming allows the player...
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