VorbisRTP: Difference between revisions

From XiphWiki
Jump to navigation Jump to search
(rm -f spam)
No edit summary
Line 33: Line 33:


Tor-Einar Jarnbjo has an [http://www.j-ogg.de/rtp/index.html example implementation] that extends the ideas in the 03 draft a bit.
Tor-Einar Jarnbjo has an [http://www.j-ogg.de/rtp/index.html example implementation] that extends the ideas in the 03 draft a bit.
Host English Website Navigate:
[http://www.9993339.com/01index.htm Beverages]
[http://www.9993339.com/02index.htm Bicycle Parts]
[http://www.9993339.com/03index.htm Bicycles]
[http://www.9993339.com/04index.htm Bidets]
[http://www.9993339.com/05index.htm Billiards]
[http://www.9993339.com/06index.htm Binoculars]
[http://www.9993339.com/07index.htm Bio-technology Products]
[http://www.9993339.com/08index.htm Biscuit]
[http://www.9993339.com/09index.htm Bitumen]
[http://www.9993339.com/10index.htm Blank Records]
[http://www.9993339.com/11index.htm Blanket]
[http://www.9993339.com/12index.htm Blender]
[http://www.9993339.com/13index.htm Blister Cards]
[http://www.9993339.com/14index.htm Boards]
[http://www.9993339.com/15index.htm Boats]
[http://www.9993339.com/16index.htm Body Building]
[http://www.9993339.com/17index.htm Bodyguard]
[http://www.9993339.com/18index.htm Boilers]
[http://www.9993339.com/19index.htm Books]
[http://www.9993339.com/20index.htm Bottles]
[http://www.9993339.com/21index.htm Bowling]
[http://www.9993339.com/22index.htm Boxing]
[http://www.9993339.com/23index.htm Brakes]
[http://www.9993339.com/24index.htm Bread]
[http://www.9993339.com/25index.htm Breast]
[http://www.9993339.com/26index.htm Bricks]
[http://www.9995555.com/01index.htm Ballast]
[http://www.9995555.com/02index.htm Bamboo]
[http://www.9995555.com/03index.htm Bare Wire]
[http://www.9995555.com/04index.htm Barrels]
[http://www.9995555.com/05index.htm Baseball]
[http://www.9995555.com/06index.htm Basketball]
[http://www.9995555.com/07index.htm Basketry]
[http://www.9995555.com/08index.htm Bath]
[http://www.9995555.com/09index.htm Bath Mirror]
[http://www.9995555.com/10index.htm Bath Racks]
[http://www.9995555.com/11index.htm Bathrobe]
[http://www.9995555.com/12index.htm Bathroom & Kitchen Fixture]
[http://www.9995555.com/13index.htm Bathroom Cabinets]
[http://www.9995555.com/14index.htm Bathtub]
[http://www.9995555.com/15index.htm Batteries and Chargers]
[http://www.9995555.com/16index.htm Battery Packs]
[http://www.9995555.com/17index.htm Battery Testers]
[http://www.9995555.com/18index.htm Bean Products]
[http://www.9995555.com/19index.htm Bearing Accessories]
[http://www.9995555.com/20index.htm Bearings]
[http://www.9995555.com/21index.htm Beauty]
[http://www.9995555.com/22index.htm Beauty Equipment]
[http://www.9995555.com/23index.htm Bedding]
[http://www.9995555.com/24index.htm Bedding Set]
[http://www.9995555.com/25index.htm Benzene]
[http://www.9995555.com/26index.htm Beverage Processing Machinery]
[http://www.9995556.com/01index.htm Assembly]
[http://www.9995556.com/02index.htm Athletic Wear]
[http://www.9995556.com/03index.htm ATV]
[http://www.9995556.com/04index.htm Audio]
[http://www.9995556.com/05index.htm Auto Accessories]
[http://www.9995556.com/06index.htm Auto Batteries]
[http://www.9995556.com/07index.htm Auto Bearing]
[http://www.9995556.com/08index.htm Auto Electrical System]
[http://www.9995556.com/09index.htm Auto Electronics]
[http://www.9995556.com/10index.htm Auto Filter]
[http://www.9995556.com/11index.htm Auto Ignition System]
[http://www.9995556.com/12index.htm Auto Lighting System]
[http://www.9995556.com/13index.htm Auto Maintenance]
[http://www.9995556.com/14index.htm Auto Meter]
[http://www.9995556.com/15index.htm Auto Parts]
[http://www.9995556.com/16index.htm Auto Production Line Equipment]
[http://www.9995556.com/17index.htm Auto Starter System]
[http://www.9995556.com/18index.htm Automobile]
[http://www.9995556.com/19index.htm Automobile Stocks]
[http://www.9995556.com/20index.htm Auxiliary]
[http://www.9995556.com/21index.htm Aviation]
[http://www.9995556.com/22index.htm Baby Food]
[http://www.9995556.com/23index.htm Badminton]
[http://www.9995556.com/24index.htm Bag]
[http://www.9995556.com/25index.htm Ball]
[http://www.9995556.com/26index.htm Ball Bearings]
[http://www.9995558.com/01index.htm Alarm]
[http://www.9995558.com/02index.htm Alcohol]
[http://www.9995558.com/03index.htm Aldehyde]
[http://www.9995558.com/04index.htm Alkali]
[http://www.9995558.com/05index.htm Alkene]
[http://www.9995558.com/06index.htm Alkyl]
[http://www.9995558.com/07index.htm Alkyne]
[http://www.9995558.com/08index.htm Alternator]
[http://www.9995558.com/09index.htm Aluminum Pipes]
[http://www.9995558.com/10index.htm Amine]
[http://www.9995558.com/11index.htm Amplifier]
[http://www.9995558.com/12index.htm Amusement Park]
[http://www.9995558.com/13index.htm Angular Contact Ball Bearing]
[http://www.9995558.com/14index.htm Animal Husbandry]
[http://www.9995558.com/15index.htm Antique Imitation Crafts]
[http://www.9995558.com/16index.htm Antiques]
[http://www.9995558.com/17index.htm Anti-static Packaging]
[http://www.9995558.com/18index.htm Apartment]
[http://www.9995558.com/19index.htm Apparel
[http://www.9995558.com/20index.htm Apparel Stocks]
[http://www.9995558.com/21index.htm Aquatic Products]
[http://www.9995558.com/22index.htm Art Set]
[http://www.9995558.com/23index.htm Artificial Crafts]
[http://www.9995558.com/24index.htm Arts]
[http://www.9995558.com/25index.htm Asbestos Products]
[http://www.9995559.com/02index.htm Air Treatment]
[http://www.9995559.com/03index.htm Air-Compressing]
[http://www.9995559.com/04index.htm Air-conditioner]
[http://www.9995559.com/05index.htm Air-Separation]
[http://www.9995559.com/06index.htm Alarm]
[http://www.9995559.com/07index.htm Alcohol]
[http://www.9995559.com/08index.htm Aldehyde]
[http://www.9995559.com/09index.htm Alkali]
[http://www.9995559.com/10index.htm Alkene]
[http://www.9995559.com/11index.htm Alkyl]
[http://www.9995559.com/12index.htm Alkyne]
[http://www.9995559.com/13index.htm System]
[http://www.9995559.com/14index.htm Air Freshener]
[http://www.9995559.com/15index.htm Air Conditioning]
[http://www.9995559.com/16index.htm Product Stocks]
[http://www.9995559.com/17index.htm Agrochemicals]
[http://www.9995559.com/18index.htm Abrasives]
[http://www.9995559.com/19index.htm Adapter]
[http://www.9995559.com/20index.htm Accessories]
[http://www.9995559.com/21index.htm Acrylic Fabric]
[http://www.9995559.com/22index.htm Activated Carbon]
[http://www.9995559.com/23index.htm Adapter]
[http://www.9995559.com/24index.htm Adhesive Tape]
[http://www.9995559.com/25index.htm Adhesives]
[http://www.9995559.com/26index.htm Advertising]
[http://www.9995559.com/jianjie.htm Advertising]
[http://www.9995559.com/lianxi.htm Materials]
[http://www.9995559.com/products.htm Aerosols]
[http://www.9995559.com/rongyu.htm Aggregate]
[http://www.9995559.com/shiyong.htm Agricultural
[http://www.9995559.com/tuijian.htm Packaging]
[http://www.9995559.com/zhuyao.htm Agriculture]
[http://www.9995559.com/index.htm Agriculture]
[http://www.apicalsoft.com website monitor]
[http://www.apicalsoft.com website monitoring]
[http://www.apicalsoft.com server monitor]
[http://www.apicalsoft.com host monitor]
[http://www.apicalsoft.com website performance]
[http://www.a688.net/amarketingsoft1.htm Fireworks]
[http://www.a688.net/amarketingsoft3.htm gemstone globe]

Revision as of 23:39, 3 November 2004

Vorbis over RTP

This page documents current consensus on the RTP payload format for Vorbis audio. This encapsulation is useful for interactive and multicast streaming.

Drafts

draft-kerr-avt-vorbis-rtp-03 (now expired) was the last spec attempt and serves as the baseline for current work.

Version 04 of the draft is being written using the XML markup defined in RFC2629. Text and HTML versions of the current draft state are available here:

Issues

Basically, we pack Vorbis packets into RTP packets; that's been part of the draft for some time. The hard part is achieving reliable header transmission, since RTP is usually used in combination with a no-guaranteed-delivery networking mechanism. Equally important, in multicast the headers can't be prepended on connection the way icecast does with HTTP streams.

The current suggestion (due to Jack) is that we dispense with the chaining feature of Ogg streams, and only allow a single set of vorbis headers per RTP stream. Since RTP is most often used to stream live or at least individual events, this is not a serious limitation. Even in the "simulated live" case encoded files often have the same set of codebooks, and those that do not can be re-encoded on the fly.

The only real drawback is the loss of a metadata update mechanism. This can be resolved either by using a completely separate metadata stream (which we've always wanted to do anyway) or by altering the spec to allow comment header packets to occur outside the headers. In the later case a recording application would need to insert chaining boundaries and duplicate headers at each metadata change. The former offers the client more control over the metadata stream bandwidth.

Design

  • Vorbis packets get packed into RTP packets
  • Header parameters are fixed per stream, so they can be passed in the SDP
 * inline in the SDP?
 * HTTP reference or other protocol?
 * some kind of hash so clients can cache codebooks/parameters
 * inline in the RTP stream should also be allowed
  • Granulepos becomes timestamp (still in samples)

Implementation

Tor-Einar Jarnbjo has an example implementation that extends the ideas in the 03 draft a bit. Host English Website Navigate:

Beverages Bicycle Parts Bicycles Bidets Billiards Binoculars Bio-technology Products Biscuit Bitumen Blank Records Blanket Blender Blister Cards Boards Boats Body Building Bodyguard Boilers Books Bottles Bowling Boxing Brakes Bread Breast Bricks Ballast Bamboo Bare Wire Barrels Baseball Basketball Basketry Bath Bath Mirror Bath Racks Bathrobe Bathroom & Kitchen Fixture Bathroom Cabinets Bathtub Batteries and Chargers Battery Packs Battery Testers Bean Products Bearing Accessories Bearings Beauty Beauty Equipment Bedding Bedding Set Benzene Beverage Processing Machinery Assembly Athletic Wear ATV Audio Auto Accessories Auto Batteries Auto Bearing Auto Electrical System Auto Electronics Auto Filter Auto Ignition System Auto Lighting System Auto Maintenance Auto Meter Auto Parts Auto Production Line Equipment Auto Starter System Automobile Automobile Stocks Auxiliary Aviation Baby Food Badminton Bag Ball Ball Bearings Alarm Alcohol Aldehyde Alkali Alkene Alkyl Alkyne Alternator Aluminum Pipes Amine Amplifier Amusement Park Angular Contact Ball Bearing Animal Husbandry Antique Imitation Crafts Antiques Anti-static Packaging Apartment [http://www.9995558.com/19index.htm Apparel Apparel Stocks Aquatic Products Art Set Artificial Crafts Arts Asbestos Products Air Treatment Air-Compressing Air-conditioner Air-Separation Alarm Alcohol Aldehyde Alkali Alkene Alkyl Alkyne System Air Freshener Air Conditioning Product Stocks Agrochemicals Abrasives Adapter Accessories Acrylic Fabric Activated Carbon Adapter Adhesive Tape Adhesives Advertising Advertising Materials Aerosols Aggregate [http://www.9995559.com/shiyong.htm Agricultural Packaging Agriculture Agriculture website monitor website monitoring server monitor host monitor website performance Fireworks gemstone globe

Retrieved from "https://wiki.xiph.org/index.php?title=VorbisRTP&oldid=585"