# Reducing flv CPU usage

**URL:** <https://forum.kirupa.com/t/reducing-flv-cpu-usage/295721>\
**Category:** flash\
**Created:** [September 3, 2009, 1:42pm UTC](https://forum.kirupa.com/t/reducing-flv-cpu-usage/295721 "2009-09-03T13:42:12Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![anemor2000](https://avatars.discourse-cdn.com/v4/letter/a/7feea3/32.png) [@anemor2000](https://forum.kirupa.com/u/anemor2000)\
**Post date:** [September 3, 2009, 1:42pm UTC](https://forum.kirupa.com/t/reducing-flv-cpu-usage/295721/1 "2009-09-03T13:42:12Z")

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Hi, I am making a websites with fairly large videos in the background.  
The site is extremely heavy for the cpu and I was wondering if any of you guys know a trick on how to make flv streaming less heavy.

Here are all my specs :  
Large flv (920 x460), with alpha channel (transparent background), Max data rate:300kbs,  
codec : On2 VP6 encode alpha channel, framerate : same as source.

Using progressive download  
Video plays in a flvplayback instance nested in a swf that is loaded and added to the stage by an other swf.

Embed in the html page with swfobject, wmode = opaque.  
Movie playing at 31 fps.

You got any clues?  
Thanks!