Asset Formats

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There are many asset types in OpenSimulator (e.g. notecards, sounds, textures). Each of these has its own distinctive format.

On the whole, asset formats are identical to those used by the Second Life system, since they need to be sent to and understood by a second life client. You can find the details of many of those in the libopenmetaverse library that OpenSimulator uses. However, some are unique to OpenSimulator, in particular the object/prim serialization format.


  • Appearance Formats - The primary use of this format, apart from transferring appearance information between simulators and backend services, is to serve as the appearance format for NPCs.
  • Object Formats - Formats used to serialize prim/object and inventory item data for later restoration.
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