VirtualMV/Flash12 (CS6)/Journal/Content/Alpha Channels

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The On2 VP6 codec supports Alpha channels, or the ability to have a transparent area on your movie

According to Reinhardt and Dowd (2007, p.572)[1] to create video with an Alpha Channel generally requires 4 steps

  1. Acquire video footage
  2. Import video into a video effect application. Example, Adobe after effects
  3. Render the footage with the alpha channel (in After Effects: Video Outupt > Channels > RGB + Alpha)
  4. Encode with On2 VP6 codec. Use FLV Video Encoder supplied with Flash. Make sure you check Encode alpha channel check box.

Anderson(2007)[2] demonstrates this effect, and shows how far Flash can go by including it in a transparent popup window.
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