Sirannon is a

free Free may refer to: Concept * Freedom, the ability to act or change without constraint or restriction * Emancipate, attaining civil and political rights or equality * Free (''gratis''), free of charge * Gratis versus libre, the difference betw ...

open-source Open source is source code that is made freely available for possible modification and redistribution. Products include permission to use and view the source code, design documents, or content of the product. The open source model is a decentrali ...

media server A media server is a computer appliance or an application software that stores digital media (video, audio or images) and makes it available over a network. Media servers range from servers that provide video on demand to smaller personal compu ...

and client. The goal is to aid in video research and experimental

streaming Streaming media refers to multimedia delivered through a network for playback using a media player. Media is transferred in a ''stream'' of packets from a server to a client and is rendered in real-time; this contrasts with file downl ...

. Sirannon allows the programmer to create a wide variety of media-handling components such as

, reading, writing, packetizing. By organizing these components in a workflow the programmer can create many applications such as a

, media proxy or video tool. Sirannon was introduced at the ACM multimedia conference in October 2009 under its former name xStreamer. Sirannon has been accepted as part of the reference toolchain, defined in the final testplan of the Video Quality Experts Group (VQEG) Hybrid Perceptual/Bitstream project, for streaming video sequences and simulating network impairments.

Features

* Protocol transcoding – universal server – universal client The main feature is the combination of universal server (RTSP, HTTP, RTMP, RTMPT) and universal client (RTSP, HTTP, RTMP, RTMPT). This combination gives Sirannnon the ability to transcode one protocol to another in real-time, dynamically and for many users. A request of the form rtmp://mysirannon.com/RTSP-proxy/www.mystreams.net/content/AJa3cdW.mov in a

Flash Player Adobe Flash Player (known in Internet Explorer, Firefox, and Google Chrome as Shockwave Flash) is a discontinuedExcept in China, where it continues to be used, as well as Harman for enterprise users. computer program for viewing multimedia c ...

will make it connect to a Sirannon server that will in its turn connect to the fictional site www.mystreams.net using RTSP, request the stream and in real-time change to protocol and packetization to send it to the client using RTMP. The translation works for all the combinations from and to RTSP, HTTP, RTMPT and RTMPT. * HTML 5 – WebM Sirannon supports

HTML 5 HTML5 (Hypertext Markup Language 5) is a markup language used for structuring and presenting hypertext documents on the World Wide Web. It was the fifth and final major HTML version that is now a retired World Wide Web Consortium (W3C) recommend ...

by streaming Google's

WebM 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 ...

content. In addition, Sirannon can transcode in real-time non-WebM ingested content to WebM and stream it. * H.264/SVC and H.264/MVC – Support for streaming H.264 Scalable Video Coding and H.264 Multiview Video Coding, typically over RTP, and H.264 Multi View Coding. * Apple Live HTTP streaming – Sirannon supports Apple's Live HTTP streaming to MacBook, iPhone and iPad (new in 0.6.0). * Impairment – Several components can impair a stream to simulate packet loss using different loss models (uniform, gilbert, predefined). The resulting stream can be written to a file or streamed.

Supported formats

*Supported codecs: **Video: H.264/AVC,

MPEG-4 MPEG-4 is a group of international standards for the compression of digital audio and visual data, multimedia systems, and file storage formats. It was originally introduced in late 1998 as a group of audio and video coding formats and related ...

MPEG-2 MPEG-2 (a.k.a. H.222/H.262 as was defined by the ITU) is a standard for "the generic coding of moving pictures and associated audio information". It describes a combination of lossy video compression and lossy audio data compression methods ...

MPEG-1 MPEG-1 is a Technical standard, standard for lossy compression of video and Audio frequency, audio. It is designed to compress VHS-quality raw digital video and CD audio down to about 1.5 Mbit/s (26:1 and 6:1 compression ratios respectively ...

VP8 VP8 is an open format, open and royalty-free Video coding format, video compression format released by On2 Technologies in 2008. Initially released as a Proprietary software, proprietary successor to On2's previous VP7 format, VP8 was released a ...

**Audio:

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 comm ...

AMR-NB The Adaptive Multi-Rate (AMR, AMR-NB or GSM-AMR) audio codec is an audio compression format optimized for speech coding. AMR is a multi-rate narrowband speech codec that encodes narrowband (200–3400 Hz) signals at variable bit rates rangin ...

AMR-WB Adaptive Multi-Rate Wideband (AMR-WB) is a patented Wideband audio, wideband speech coding, speech audio coding standard developed based on Adaptive Multi-Rate audio codec, Adaptive Multi-Rate encoding, using a similar methodology to algebraic cod ...

*Supported containers: MPEG-2 PS, MPEG-2 Transport Streams,

AVI Avi is a given name, usually masculine, often a diminutive of Avram (given name), Avram, Avraham, etc. It is sometimes feminine and a diminutive of the Hebrew spelling of Abigail (name), Abigail. People with the given name include: * Avi (author ...

, MOV/MP4, MKV,

, raw *Supported protocols: **

RTMP RTMP may refer to: * Real-Time Messaging Protocol, a multimedia streaming and remote procedure call protocol primarily used in Adobe Flash * Routing Table Maintenance Protocol, part of the AppleTalk network stack * Royal Tyrrell Museum of Palaeon ...

, RTMPT **

RTSP The Real-Time Streaming Protocol (RTSP) is an application-level network protocol designed for multiplexing and packetizing multimedia transport streams (such as interactive media, video and audio) over a suitable transport protocol. RTSP is ...

/ RTP / UDP **

HTTP HTTP (Hypertext Transfer Protocol) is an application layer protocol in the Internet protocol suite model for distributed, collaborative, hypermedia information systems. HTTP is the foundation of data communication for the World Wide Web, wher ...

** UDP ** TCP

References

External links

Official website
Free multimedia software Free software programmed in C++ Multimedia frameworks {{multimedia-software-stub

Features

Supported formats

See also

References

External links