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When your frame rate goes down, and the video starts lagging, it is important to be able to analyse where it can come from. Today we’re going to look at some information we can use to troubleshoot this. Roughly, the way our application works is the following: at each pass, we read  a video frame from the disk if needed, decode it and then send it to the GPU (the Graphic card’s CPU) together with all blending and effect operations. Then we ask the graphic card to flush all operations (that is actually processing all pending graphical instructions) and present it to the display. If you look at the bottom of the user interface window in either NuVJ, GrandVJ or MediaMaster, you will notice that there are two numbers constantly updated. Something like:Graph: 400.00 Total: 60.00 These numbers indicate the speed at which the engine does its rendering.
By ArKaos Team
on 30 Jun 2009 12:00 AM
  • optimization
  • troubleshooting
  • video
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Fraktus used the opportunity of having the compatibility lab at WWDC to put his synced visual network player at test with Snow Leopard and 6 computers (1 server, 5 clients). The clients are some low end Macs, Mac Mini, iMacs and a MacBook Pro. Here is the result: Ok there is a black frame when switching queues but hey, it’s a prototype :) It’s fully multithreaded so development is moving forward carefully. There are threads for the network synchronization, video decompression, OpenGL rendering and status update to the server
By ArKaos Team
on 12 Jun 2009 12:00 AM
  • development
  • mac
  • network
  • prototype
  • synchronization
  • video
  • visuals
  • wwdc
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Richard Shipman – professional lighting designer and long-time ArKaos supporter – has just accomplished another successful performance, this time for Prodigy during their UK Arena Tour in April. Check out the full article at Digital Production Middle East, and if you want to know more about Richard Shipman, have a look at hisLighting Designer interview we published back in 2006.
By ArKaos Team
on 19 May 2009 12:00 AM
  • article
  • concert
  • show
  • tour
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Here’s the latest idea from Fraktus (our Code Guru); a way to distribute visual content over a network of players. Note that it’s just a prototype and will not necessarily become a software feature or product.
By ArKaos Team
on 16 May 2009 12:00 AM
  • development
  • network
  • prototype
  • synchronization
  • video
  • visuals