What’s new in Cool-chic 4.1?

Cool-chic 4.1 focuses on video coding, improving particularly the temporal prediction through better and lighter sub-pixel motion compensation. This release is linked to the following paper: Efficient Sub-pixel Motion Compensation in Learned Video Codecs, Ladune et al.

  • Replace 2-tap bilinear filtering with sinc-based 8-tap filters

  • Downsampled motion fields for lighter decoding

  • Improved video compression performance: -23.6% rate versus Cool-chic 4.0

  • Decrease motion-related complexity by 45%, from 391 to 214 MAC / decoded pixel

Check-out the release history to see previous versions of Cool-chic.