Storage Formula?

I read with interest the Jeanne Rawlings excellent article, Stellar Video, Just Smaller (December 2008). The sidebar at the bottom described various storage requirements. Can you please share the formula to determine file size given the various variables?

Thanks.
Art Kirsch
Producer, Cat Herder
Member: OC Ad Club; Media Alliance of Orange County; Public Relations Society of America

Nice as it would be to have a grand unified formula that covers every destination format, there are far too many variables to cover, e.g., constant or variable bitrate, audio formats, etc. The closest we can offer is the formula for calculating bitrates for DVDs (Save As: MPEG-2 Encoding Tips for DVD Authors). The very best way to handle bitrate calculations is to use the calculation tools included with many encoding applications.
-The Editors

Correction

In the January 2009 issue of Videomaker, we inadvertently listed the wrong price on the Adobe Premiere Elements 7 review. The correct pricing is the following:

Premiere Elements 7

  • Buy: $99.99
  • Upgrade: $79.99

Premiere Elements 7 with Photoshop.com Plus Membership

  • Buy: $139.99
  • Upgrade: $119.99

Premiere Elements 7 & Photoshop Elements 7 Bundle

  • Buy: $149.99
  • Upgrade: $119.99

Premiere Elements 7 & Photoshop Elements 7 Bundle with Photoshop.com Plus Membership

  • Buy: $179.99
  • Upgrade: $149.99

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