Difference between revisions of "Cineform RAW"

From MultimediaWiki
Jump to navigation Jump to search
(Add to Formats missing in FFmpeg category.)
 
(2 intermediate revisions by 2 users not shown)
Line 1: Line 1:
*FourCC: CFHD (avi)
*FourCC: CFHD (avi)
*Samples: http://www.siliconimaging.com/DigitalCinema/gallery_footage.html
*Samples:  
** http://samples.mplayerhq.hu/V-codecs/CFHD/
** http://www.siliconimaging.com/DigitalCinema/gallery_footage.html
*Website: http://www.cineform.com
*Website: http://www.cineform.com
*Decoder: http://www.cineform.com/products/Downloads/Downloads.htm
*Decoder: http://www.cineform.com/products/Downloads/Downloads.htm
*Whitepaper: http://www.cineform.com/technology/CineForm_RAW.htm
*Whitepaper: http://www.cineform.com/technology/CineForm_RAW.htm


Cineform RAW is a [[wavelet]] codec optimized for high visual fidelity and fast CPU performace.
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)
 


[[Category:Video Codecs]]
[[Category:Video Codecs]]
[[Category:Wavelet Video Codecs]]
[[Category:Wavelet Video Codecs]]
[[Category:Formats missing in FFmpeg]]

Latest revision as of 07:07, 7 February 2016

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)