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Wednesday, May 03, 2006

ClearType makes bloated Screencasts

I've been making movies for ShowMeDo about Nose and PyWinAuto.  As a matter of course, I turn off Windows ClearType rendering. It looks pretty, but I don't think it's worth the bits.

I recorded the same movie with and without ClearType, capturing to Microsoft Video 1 at 100% (lossless) quality:

  • ClearType ON : 31,157 KB
  • ClearType OFF: 11,263 KB

The movie had audio, and things get even more interesting when looking at it with GSpot:

  • Cleartype ON Bitrate: 11743 kb/s
  • Cleartype OFF Bitrate: 3219 kb/s

So: Cleartype makes the video 264% bigger.  Is it really worth it?


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