Cineform RAW

• FourCC: CFHD (avi)
• Samples:
  • http://samples.mplayerhq.hu/V-codecs/CFHD/
  • http://www.siliconimaging.com/DigitalCinema/gallery_footage.html
• Website: http://www.cineform.com
• Decoder: http://www.cineform.com/products/Downloads/Downloads.htm
• Whitepaper: http://www.cineform.com/technology/CineForm_RAW.htm

Cineform is a wavelet codec optimized for high visual fidelity and fast CPU performace.

VC-5 is a separate codec that uses some components from Cineform but the two codecs are not backwards compatible (see https://medium.com/@kierank_/reverse-engineering-the-gopro-cineform-codec-7411312bfe1c)

Cineform covers a wide range of use-cases. Currently the FFmpeg implementation supports YUV 4:2:2 10-bit, RGB 10/12-bit, RGBA 10/12-bit.

The FFmpeg decoder is quite slow - here are things that need to be done to make it fast:

• Add SIMD transform with different versions for clip and shift (see below)
• Merge prescale shift into transform (where necessary)
• Merge decompanding with VLC Tables or use a LUT
• Make transform happen inplace

Other TODOs:

• Bayer files
• Transform-type=2 files - seem to have more subbands and are different to normal (Cineform RAW and others)