Building an Optimized, Graphics-Intensive Silverlight Application

Summary of the 20min perf talk

SilverLite — Wed, 25 Mar 2009 04:30:01 GMT

The 20 minute talk is posted here . I spoke till the speaker timer started to flash at me (giant flashing

Building an Optimized, Graphics-Intensive Silverlight Application - Tim Sneath

DotNetShoutout — Wed, 25 Mar 2009 07:42:56 GMT

Thank you for submitting this cool story - Trackback from DotNetShoutout

re: Building an Optimized, Graphics-Intensive Silverlight Application

Ann_developer — Thu, 26 Mar 2009 13:34:47 GMT

Cool article! THANKS!

Hope this article I like also help you to better understand graphic-intensive applications. Here is direct link http://techzone.enterra-inc.com/architecture/algorythm-of-defining-plain-polygon-signature-point/

Good luck!

re: Building an Optimized, Graphics-Intensive Silverlight Application

Alex Zambelli — Tue, 14 Apr 2009 11:13:59 GMT

Hi Tim,

You say:

"For maximum throughput, make sure you encode the video at the minimum framerate that you need (typically 18-20fps)."

I understand what you're effectively trying to say ("Less frames to decode and render leads to lower CPU usage and smoother playback"), but it doesn't really work that way with video. You can't just arbitrarily decimate video frame rates to the point of "good enough." 18-20 fps is not an acceptable frame rate for video. There are really only 2 real-world cases where frame rate decimation is acceptable in video encoding:

1) Because film is shot at 24 fps and often converted to 60 Hz (30i or 60p) in the NTSC/ATSC world through the process of telecine, it is highly recommended that film-originated video content always be restored back to its original 24p cadence before being encoded for the Web.

2) Video content is actually typically shot at 60 Hz (NTSC/ATSC) or 50 Hz (PAL), but for Web video it is an acceptable practice to decimate half the frames and encode video content at 30 and 25 frames per second, respectively, in order to avoid playback performance issues.