Revisions for Streaming Quartz Composer

Comparing two revisions:

Fri, 2012-08-03 23:16 by leegrosbauer (493)Sat, 2013-02-16 14:11 by leegrosbauer (493)

Edited link to CamTwist video tutorials. Edited the description of the Streaming Related category.

Clarified availability circumstances for downloading Quartz Composer.

Changes to Body
 
While these tools don't directly input to broadcasting encoders, they are nonetheless capable of hosting and presenting live Quartz Compositions and are accessible for streaming via virtual camera using various screen capture techniques and/or Syphon:
 
While these tools don't directly input to broadcasting encoders, they are nonetheless capable of hosting and presenting live Quartz Compositions and are accessible for streaming via virtual camera using various screen capture techniques and/or Syphon:
 
 
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* [Quartz Composer](http://developer.apple.com/tools/xcode/) Freeware Xcode Developer tool from apple.com. Quartz Composer is now distributed as a supplementary download to Xcode. It can be found in the Graphics Tools for Xcode package on the [Downloads for Apple Developers](http://developer.apple.com/downloads/index.action) page (developer login required) as well as by downloading the graphics package from within Xcode itself. Syphon compatible.
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* [Quartz Composer](http://developer.apple.com/tools/xcode/) Freeware Xcode Developer tool from apple.com. Quartz Composer is now distributed as a supplementary download to Xcode. It is bundled into the Graphics Tools for Xcode package on the [Downloads for Apple Developers](http://developer.apple.com/downloads/index.action) page (developer login required). The Downloads for Apple Developers page can also be accessed from within Xcode itself. Syphon compatible.
 
* [VDMX](http://www.vidvox.net/) Commercial VJ software from vidvox.net. Syphon compatible.
 
* [VDMX](http://www.vidvox.net/) Commercial VJ software from vidvox.net. Syphon compatible.
 
* [CoGe](http://cogevj.hu/) Commercial VJ software from cogevj.hu. Syphon compatible.
 
* [CoGe](http://cogevj.hu/) Commercial VJ software from cogevj.hu. Syphon compatible.
 
* [Soundflower](http://cycling74.com/products/soundflower/) Open Source audio routing utility that allows applications to pass audio to other applications. Capable of making system audio available as an audio source to broadcasting encoders and other applications.
 
* [Soundflower](http://cycling74.com/products/soundflower/) Open Source audio routing utility that allows applications to pass audio to other applications. Capable of making system audio available as an audio source to broadcasting encoders and other applications.
 
* [BoinxTV](http://boinx.com/boinxtv/overview/) Commercial QC capable pre-streaming video accessory from boinx.com. Record and edit live QC enhanced video. Useful for pre-recorded broadcasts. Real-time broadcasting capabilities via secondary monitor and/or Syphon.
 
* [BoinxTV](http://boinx.com/boinxtv/overview/) Commercial QC capable pre-streaming video accessory from boinx.com. Record and edit live QC enhanced video. Useful for pre-recorded broadcasts. Real-time broadcasting capabilities via secondary monitor and/or Syphon.
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Revision of Sat, 2013-02-16 14:11:

Streaming Quartz Composer

Resources

The streaming of digital imagery, including imagery associated specifically with Quartz Composer, typically involves an integration of several related but separate items of third party software, third party services and a variety of broadcasting motivations and techniques. The purpose of this topic is to aggregate appropriately related internet broadcasting resource information and to provide a discussion venue for Quartz Composer streaming advocacy and activities, with a focus on Quartz Composer related internet broadcasting activities which showcase software from kineme.net.

Regarding streaming on OS X in general: It should be clearly understood that high definition streaming is processor intensive. Common application requirements for high definition streaming on OS X may well include the simultaneous use of an audio routing utility, a virtual camera and an HD capable broadcasting encoder as well as whichever application(s) may be involved in initial imagery and audio generation.

Broadcasting Encoders

Third party software which does the actual streaming. These tools access imagery provided by external cameras and built-in webcams, but they can also access output from virtual software cameras which are acting as hosts for Quartz Compositions and/or which are acting as capture tools for Quartz Composer related imagery generated by other applications.

Regarding Audio: Broadcasting encoders for OS X handle audio and video as separate entities. Audio from microphones is normally recognized by default but audio from other sources usually needs to be made available by either feeding the audio through the microphone or by utilizing an audio routing utility such as Soundflower (see Streaming Related).

Virtual Cameras

Virtual cameras are software applications that simulate hardware camera output. They are recognized as a camera source by most broadcasting encoders and by many other applications. Acting alone or as intermediaries between hardware cameras and other applications, virtual cameras can be used for screen captures and for the addition of video, still images and various digital effects. Some are capable of realtime presentation of live Quartz Compositions either by hosting the compositions as effects, in which circumstances they can also be utilized as stand-alone hosts for Quartz Compositions, or by frame sharing with other applications via Syphon (see Streaming Related).

  • CamTwist QC capable virtual camera software from allocinit.com. CamTwist is capable of layering multiple Quartz Compositions in user adjustable effects chains. Extensive mixing capabilities in the Studio section of the application. Video Tutorials Syphon compatible. Freeware.
  • ManyCam Virtual camera software from manycam.com. QC capable; a QC image filter containing a ManyCam plugin appears at /Library/Compositions for use in QC or elsewhere. Freeware.
  • CamCamX QC capable virtual camera software from b-l-a-c-k-o-p.com. Commercial.

All the virtual cameras for OS X rely on a specialized QuickTime Component to perform their mimicry of hardware camera output. It's worth observing that the need for stand-alone virtual camera applications seems to be primarily attributable to issues of non-viability, for most developers, of directly integrating a similar camera mimicing functionality into their own individual applications. That said, it's also worth observing that if there's a need to stream imagery other than output from a hardware cam or dedicated audio/video conferencing client, the use of a virtual camera will probably be required.

Live Video Broadcast Hosting Services

Broadcast hosting services receive the stream and make it available online for viewing, typically by rebroadcasting output from the browser based Adobe Flash Player. Most hosting services also accept high definition streams from Flash Media Live Encoder and/or QuickTime Broadcaster and Wirecast. Links to host-specific encoder instructions, if known, are noted for each service:

Audio Video Conferencing Clients

Using the virtual cameras listed above, live quartz compositions can also be streamed from the Mac via most common AV conferencing clients. iChat is an exception in that it utilizes a private application programming interface to access camera imagery. iChat therefor does not currently access virtual cameras directly, but there is potential for a work-around using the ManyCam plugin.

  • Skype Multi-user cross-platform AV conferencing.
  • Messenger for Mac One to one cross-platform AV conferencing with MSN Messenger.
  • Yahoo Messenger One to one cross-platform AV conferencing.
  • iChat/AIM Multi-user AV conferencing. Cross-platform via AIM and Yahoo.
  • ooVoo Multi-user cross-platform AV conferencing.
  • TinyChat.com There is a plethora of browser based, cross-platform, multi-party conferencing sites on the web. They come and go. Some allow for substantial numbers of participants in a single conference. Audio latency is an issue with many. TinyChat is listed here as a typical, currently existing example.

QC Capable Visualist Accessories

While these tools don't directly input to broadcasting encoders, they are nonetheless capable of hosting and presenting live Quartz Compositions and are accessible for streaming via virtual camera using various screen capture techniques and/or Syphon:

  • Quartz Composer Freeware Xcode Developer tool from apple.com. Quartz Composer is now distributed as a supplementary download to Xcode. It is bundled into the Graphics Tools for Xcode package on the Downloads for Apple Developers page (developer login required). The Downloads for Apple Developers page can also be accessed from within Xcode itself. Syphon compatible.
  • VDMX Commercial VJ software from vidvox.net. Syphon compatible.
  • CoGe Commercial VJ software from cogevj.hu. Syphon compatible.
  • ArKaos GrandVJ Commercial VJ software from arkaos.net. QC support in ArKaos GrandVJ is currently in beta. Syphon compatible.
  • Resolume Avenue 3.2 Commercial VJ software from resolume.com. Version 3.2 for Mac includes Quartz Composition playback.

Streaming Related

Additional resources which may be useful in association with web broadcasting:

  • Syphon Open Source technology that allows applications to share frames with one another in realtime. QC integration, amongst many others.
  • v002 Media Tools Contents include a CGDisplayStream based screen capture for OS X 10.8, reportedly based on a new API for that version of the operating system. It appears to require compilation in Xcode, as of this posting. Should probably be considered beta-ware for now.
  • Soundflower Open Source audio routing utility that allows applications to pass audio to other applications. Capable of making system audio available as an audio source to broadcasting encoders and other applications.
  • BoinxTV Commercial QC capable pre-streaming video accessory from boinx.com. Record and edit live QC enhanced video. Useful for pre-recorded broadcasts. Real-time broadcasting capabilities via secondary monitor and/or Syphon.