Decoder configuration

Inter frames (P or B) decoders involves two Cool-chic decoders, one for the residue and one for the motion while intra frames only requires a residue decoder. Each Cool-chic decoder has the same architecture as the one described in the image coding section.

Since the residue and motion Cool-chic decoders have the same design, they are parameters through similar arguments. For instance --arm_residue sets up the the ARM architecture for the residue decoder, while --arm_motion achieves the same thing for the motion decoder.

Similarly, it is possible to provide a decoder configuration file for the motion Cool-chic decoder through the --dec_cfg_motion arguments. Example configuration files are listed in cfg/dec/motion/.

Frame-wise decoder configuration

In a hierarchical coding structure, not all frames are equally important. As such, it is often interesting to use lighter architectures for not-so-important frames. The video coding example script provides an example of frame-wise decoder configuration automatically generated.