Daala

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This article is about the video codec. For the Star Wars character, see Admiral Natasi Daala.

Daala is the current working name of a video coding format and accompanying reference codec implementation under development by the Xiph.Org Foundation.[1] Daala is intended to be a high-efficiency video coding format for use cases similar to those of High Efficiency Video Coding (HEVC or H.265) and VP9.[2] Daala will use a lapped transform to reduce the blocking artifacts characteristic of other video codecs that use the discrete cosine transform directly.[3] In June 2013, Chris Montgomery (founder of Xiph.org) stated that the performance goal for Daala is to be a generation beyond HEVC and VP9.[4]

History[edit]

On May 30, 2013, an alpha prototype of Daala was used to stream video over the internet.[5]

On June 20, 2013, an introduction to Daala was added to the Xiph.Org Foundation website.[5][6][7]

On July 23, 2013, an introduction to frequency domain prediction in Daala was added to the Xiph.Org Foundation website.[8]

On August 12, 2013, an introduction to time/frequency resolution switching in Daala was added to the Xiph.Org Foundation website.[9]

On October 17, 2013, an introduction to Chroma from Luma in Daala was added to the Xiph.Org Foundation website.[10]

See also[edit]

References[edit]

  1. ^ Roettgers, Janko (2013-10-15). "Open codec pioneer leaves Red Hat, joins Mozilla to work on next-generation video codec". GigaOm. Retrieved 2014-04-20. 
  2. ^ Shankland, Stephen (2013-11-15). "VLC steps into next-gen video wars with VP9, HEVC support". CNet. Retrieved 2014-04-20. 
  3. ^ Willis, Nathan (2013-10-30). "Developing the Opus and Daala codecs". LWN.net. Retrieved 2014-04-20. 
  4. ^ Parfeni, Lucian (2013-10-30). "Mozilla Announces Next-Generation Video Codec to Leapfrog Google's VP9 and H.265". Softpedia. Retrieved 2014-04-20. 
  5. ^ a b Monty (2013-06-20). "Introducing Daala". Xiph.Org Foundation. Retrieved 2013-06-21. 
  6. ^ Lapped Transform via Time-Domain Pre- and Post-Filtering, Trac D. Tran, Jie Liang, Chengjie Tu, IEEE TRANSACTIONS ON SIGNAL PROCESSING, VOL. 51, NO. 6, JUNE 2003, accessed 20130622.
  7. ^ Extended Lapped Transforms: Properties, Applications, and Fast Algorithms, Henrique S. Malvar, Dept. of Electrical Engineering, Universidade de Brasília. in: IEEE Trans. on Signal Processing, vol. 40, no. 11, pp. 2703–2714, Nov. 1992.
  8. ^ Monty (2013-07-23). "Introducing Daala part 2: Frequency Domain Intra Prediction". Xiph.Org Foundation. Retrieved 2013-08-17. 
  9. ^ Monty (2013-08-12). "Introducing Daala part 3: Time/Frequency Resolution Switching". Xiph.Org Foundation. Retrieved 2013-08-17. 
  10. ^ Monty (2013-10-17). "Introducing Daala part 4: Chroma from Luma". Xiph.Org Foundation. Retrieved 2013-10-31. 

Further reading[edit]

External links[edit]