FAQ: Why are some codecs and sequence presets missing from my installation of Premiere Pro?
If you’re having problems with sequence presets and codecs missing from Premiere Pro, see this document for solutions for this activation issue.
This document relates to the following problems:
– missing sequence presets when creating a new sequence
– Encore error: “Encore will not launch in non-royalty bearing mode. The application needs to be serialized with a royalty bearing serial number.”
– When opening a project in Premiere Pro: “Error Adobe Premiere Pro: This project contained a sequence that could not be opened. No sequence preview preset file or codec could be associated with this sequence type.”
– When importing footage, the footage is missing audio or video.
These failures are all because Premiere Pro and Encore use some codecs that require activation before they can be used. If activation of these codecs has failed, these codecs will not be available to use.
via Adobe Community : Popular Discussions – Adobe Premiere Forums http://forums.adobe.com/thread/1050730