Breaking Eggs And Making Omelettes

Topics On Multimedia Technology and Reverse Engineering


Microsoft Video-1 Based on DCT?

November 15th, 2005 by Multimedia Mike

I recently learned that Wikipedia has an entry for Microsoft Video-1. The entry makes two assertions of which I was heretofore unaware:

  1. the codec was licensed from Media Vision and is based on a codec called MotiVE
  2. the codec was based on the discrete cosine transform (DCT)

I can accept assertion #1 but I have trouble with the second. I just don’t see it. Per my understanding Video-1 falls into the category of vector quantizer. I did a quick Google search for “media vision motive cosine” to search for supporting details. This page supports the DCT claim. But it also claims that Duck TrueMotion 1 is a vector quantizer (nope). Here is another page that mentions the MotiVE connection but pegs Video-1 as a vector quantizer.

At least the Wikipedia article links to my Video-1 description so interested parties can investigate the details for themselves.

Posted in Codec Technology | 1 Comment »

One Response

  1. Multimedia Mike Says:

    Thanks to Trixter and another individual for rectifying the DCT error. This blog gets results! And yes, I know I could have just done it myself but I’m just so lazy. Plus, I wanted to be sure Video-1 was not DCT-based.