Here you can define a list of animation bone compression codes to try. To add a new Codec array, use Add (+) in the Codecs property. After adding a codec, additional properties will populate the field, relevant to the codec you have selected. Empty entries in the list are ignored when running bone compression on the animation sequence. However, the list must contain at least one codec in order to compress bone data. For a detailed description of each available codec, and a description of their additional properties, see the Bone Compression Codec Reference documentation.