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Icecast
Icecast is a streaming media project released as free software maintained by the Xiph.Org Foundation. It also refers specifically to the Server (computing), server program which is part of the project. Icecast was created in December 1998/January 1999 by Jack Moffitt (computer scientist), Jack Moffitt and Barath Raghavan to provide an open-source software, open-source audio streaming server that anyone could modify, use, and tinker with. Version 2, a Rewrite (programming), ground-up rewrite aimed at multi-format support (initially targeting Vorbis, Ogg Vorbis) and scalability, was started in 2001 and released in January 2004. History Icecast was originally developed by Moffitt in 1998 for Southern Methodist University, SMU's radio station. At the time, the station was constantly losing its FCC license and was at the time only able to reach listeners in the same building. Given that all of the dorms throughout campus had Ethernet connectivity, using streaming audio to broadcast ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opus (audio Format)
Opus is a Lossy audio compression, lossy audio coding format developed by the Xiph.Org Foundation and standardized by the Internet Engineering Task Force, designed to efficiently speech coding, code speech and general audio in a single format, while remaining latency (audio), low-latency enough for real-time interactive communication and low-complexity enough for low-end embedded processors. Opus replaces both Vorbis and Speex for new applications. Opus combines the speech-oriented Linear predictive coding, LPC-based SILK algorithm and the lower-latency Modified discrete cosine transform, MDCT-based CELT algorithm, switching between or combining them as needed for maximal efficiency. Bitrate, audio bandwidth, complexity, and algorithm can all be adjusted seamlessly in each frame. Opus has the low algorithmic delay (26.5 ms by default) necessary for use as part of a real-time communication link, networked music performances, and live lip sync; by trading off quality or bitrat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edcast
Altacast (formerly known as Edcast and Oddcast) is a free and open-source audio encoder that can be used to create Internet streams of varying types. Many independent and commercial broadcasters use Altacast to create Internet radio stations, such as those listed on the Icecast, Loudcaster and Shoutcast station directories. Development The original streaming software, Oddcast, was developed from 2000 to 2010. The official site at Oddsock.org hosted streaming media tools, which included Oddcast, Stream Transcoder, Icecast Station Browser plugin, Song Requester plugin and Do Something plugin. In late November 2010, Oddsock.org was shut down. Edcast, a fork of Oddcast, is being updated and hosted at Club RIO. In early 2012, development of Edcast was moved to Google Code and SourceForge. As of October 30, 2011, the latest stable version is ''3.33.2011.1026'' and the latest beta version is ''3.37.2011.1214''. In September 2012, a second fork, Altacast was released. The Standa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liquidsoap
Liquidsoap is a scripting language oriented toward the creation of audio and video streams, the manipulation of multimedia files, automation, serving as webserver back-end and more. The language is Functional programming, functional, statically typed with type inference. The language is an original one, but the interpreter is programmed in OCaml and provided as free software. Streams can be created from various sources such as soundcard captures, playlists, dynamic requests, or online streams. On those signal processing effects can be applied. The streams can be encoded in various formats such as MP3 or Opus (audio format), Opus, and the actual streaming is performed by serving generated HTTP Live Streaming, HLS playlists or by using streaming software such as Icecast. Although originally targeted at audio streams, the generation of video stream is also supported. Usage Liquidsoap is used as a back-end for radio streaming software such as Airtime (software), Airtime, AzuraCast ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WebM Project
WebM is an audiovisual media file format. It is primarily intended to offer a royalty-free alternative to use in the HTML video and the HTML audio elements. It has a sister project, WebP, for images. The development of the format is sponsored by Google, and the corresponding software is distributed under a BSD license. The WebM container is based on a profile of Matroska. WebM initially supported VP8 video and Vorbis audio streams. In 2013, it was updated to accommodate VP9 video and Opus audio. It also supports the AV1 codec. Vendor support Software Native WebM support by Mozilla Firefox, Opera, and Google Chrome was announced at the 2010 Google I/O conference. Internet Explorer 9 requires third-party WebM software. In 2021, Apple released Safari 14.1 for macOS, which added native WebM support to the browser. , QuickTime does not natively support WebM, but does with a suitable third-party plug-in. In 2011, the Google WebM Project Team released plugins for Internet Explor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xiph
The Xiph.Org Foundation is a nonprofit organization that produces free software, free multimedia formats and software tools. It focuses on the Ogg family of formats, the most successful of which has been Vorbis, an open and freely licensed audio format and codec designed to compete with the patented Windows Media Audio, WMA, MP3 and Advanced audio coding, AAC. As of 2013, development work was focused on Daala, an open and patent-free video format and codec designed to compete with VP9 and the patented High Efficiency Video Coding. In addition to its in-house development work, the foundation has also brought several already-existing but complementary free software projects under its aegis, most of which have a separate, active group of developers. These include Speex, an audio codec designed for speech, and Free Lossless Audio Codec, FLAC, a lossless audio codec. The Xiph.Org Foundation has criticized Microsoft and the Recording Industry Association of America, RIAA for their ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Streaming Media Systems
This is a list of streaming media systems. A more detailed comparison of streaming media systems is also available. Servers * Ampache – GPL/LGPL Audio streaming **atmosph3re – responsive web-based streaming audio server for personal music collection *Darwin Streaming Server – Apple Public Source License * dyne:bolic – Linux live CD ready for radio streaming * emby – a media server/client that runs on Linux/Mac/Windows/freeBSD/docker & NAS devices with clients on Android TV/fireTV/Apple TV/Roku/Windows/PlayStation/Xbox/iOS & HTML5 Capable devices * FFserver included in FFmpeg (discontinued) * Firefly Media Server – GPL * Flash Media Server * FreeJ – video streamer for Icecast – GPL * Helix Universal Server – delivers MPEG-DASH, RTSP, HTTP Live Streaming (HLS), RTMP; developed by RealNetworks, discontinued since October 2014 [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AAC+
High-Efficiency Advanced Audio Coding (HE-AAC) is an audio coding format for lossy data compression of digital audio as part of the MPEG-4 standards. It is an extension of Low Complexity AAC (AAC-LC) optimized for low-bitrate applications such as streaming audio. The usage profile HE-AAC v1 uses spectral band replication (SBR) to enhance the modified discrete cosine transform (MDCT) compression efficiency in the frequency domain. The usage profile HE-AAC v2 couples SBR with Parametric Stereo (PS) to further enhance the compression efficiency of stereo signals. HE-AAC is defined as an MPEG-4 Audio profile in ISO/IEC 14496–3. HE-AAC is used in digital radio standards like HD Radio, DAB+ and Digital Radio Mondiale. History The progenitor of HE-AAC was developed by Coding Technologies by combining MPEG-2 AAC-LC with a proprietary mechanism for spectral band replication (SBR), to be used by XM Radio for their satellite radio service. Subsequently, Coding Technologies submitt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peercasting
Peercasting is a method of multicasting Streaming media, streams, usually audio and/or video, to the Internet via peer-to-peer technology. It can be used for commercial, independent, and amateur multicasts. Unlike traditional IP multicast, peercasting can facilitate Video on demand, on-demand content delivery. Operation Peercasting usually works by having peers automatically relay a stream to other peers. The P2P overlay network helps peers find a relay for a specified stream to connect to. This method suffers from poor quality of service during times when relays disconnect or peers need to switch to a different relay, referred to as "churn". Another solution used is minute swarming, wherein a live stream is broken up into minute length files that are swarmed via P2P software such as BitTorrent (protocol), BitTorrent or Dijjer. However, this suffers from excessive overhead for the formation of a new swarm every minute. A new technique is to stripe a live stream into multiple subs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FLAC
FLAC (; Free Lossless Audio Codec) is an audio coding format for lossless compression of digital audio, developed by the Xiph.Org Foundation, and is also the name of the free software project producing the FLAC tools, the reference software package that includes a codec implementation. Digital audio compressed by FLAC's algorithm can typically be reduced to between 50 and 70 percent of its original size and decompresses to an identical copy of the original audio data. FLAC is an open format with royalty-free licensing and a reference implementation which is free software. FLAC supports metadata tagging, album cover art, and fast seeking. History Development was started in 2000 by Josh Coalson. The bitstream format was frozen with the release of version 0.9 of the reference implementation on 31 March 2001. Version 1.0 was released on 20 July 2001. On 29 January 2003, the Xiph.Org Foundation and the FLAC project announced the incorporation of FLAC under the Xiph.org banner. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theora
Theora is a free lossy video compression format. It was developed by the Xiph.Org Foundation and distributed without licensing fees alongside their other free and open media projects, including the Vorbis audio format and the Ogg container. The libtheora video codec is the reference implementation of the Theora video compression format developed by the Xiph.Org Foundation. Theora was derived from the formerly proprietary VP3 codec, released into the public domain by On2 Technologies. It is broadly comparable in design and bitrate efficiency to MPEG-4 Part 2, early versions of Windows Media Video, and RealVideo while it lacked some of the features present in some of these other codecs. It is comparable in open standards philosophy to the BBC's Dirac codec. Theora was named after Theora Jones, Edison Carter's Controller on the '' Max Headroom'' television program. Technical details Theora is a variable-bitrate, DCT-based video compression scheme. Like most ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vorbis
Vorbis is a free and open-source software project headed by the Xiph.Org Foundation. The project produces an audio coding format and software reference encoder/decoder ( codec) for lossy audio compression, libvorbis. Vorbis is most commonly used in conjunction with the Ogg container format and it is therefore often referred to as Ogg Vorbis. Version 1.0 of Vorbis was released in May 2000. Since 2013, the Xiph.Org Foundation has stated that the use of Vorbis should be deprecated in favor of the Opus codec, an improved and more efficient format that has also been developed by Xiph.Org. Name Vorbis is named after the character Exquisitor Vorbis in the '' Discworld'' novel '' Small Gods'' by Terry Pratchett. The Ogg format is named after ''ogging'', jargon from the computer game '' Netrek''. Development Vorbis is a continuation of audio compression development started in 1993 by Chris Montgomery. Intensive development began following a September 1998 letter from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
