Daala

Daala
扩展名	.ogv
互联网媒体类型	video/ogg
开发者	Xiph.Org、Mozilla、IETF
格式类型	视频压缩
使用容器	Ogg
扩展为	AV1
免费格式？	是
网站	xiph.org/daala

Daala是一个免专利使用费的影像编码格式，由Xiph.Org基金会和主要的赞助者Mozilla进行开发，开发者领导者为Timothy B. Terriberry^[1]。Daala的命名来源是星际大战中的女性角色Admiral Natasi Daala。

参考实做为C语言，以BSD授权条款的形式开放原始码，使用的专利可以让任何人在任何情况下使用^[2]。自2013年6月20日开始，Xiph.Org基金会陆续发布了一些开发进度报告，以及使用到的技术介绍于网站上^[3]^[4]^[5]。目前Daala为IETF的NETVC专案和开放媒体联盟的AOMedia Video 1（AV1）其中一个候选技术^[6]^[7]^[8]^[9]^[10] 。

参考资料

^ Roettgers, Janko. Open codec pioneer leaves Red Hat, joins Mozilla to work on next-generation video codec. GigaOm. 2013-10-15 [2014-04-20]. （原始内容存档于2014-03-29）.
^ Sebastian Grüner (golem.de), February 1, 2015: Freier Videocodec: Daala muss Technik patentieren (german)
^ Monty. Introducing Daala. Xiph.Org Foundation. 2013-06-20 [2013-06-21]. （原始内容存档于2013-06-23）.
^ Lapped Transform via Time-Domain Pre- and Post-Filtering （页面存档备份，存于互联网档案馆）, Trac D. Tran, Jie Liang, Chengjie Tu, IEEE Transactions on Signal Processing, vol. 51, no. 6, June 2003, accessed 2013-06-22.
^ 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.
^ Lucian Armasu. IETF Begins Standardization Process For Next-Generation 'NETVC' Video Codec (Daala). Tom's Hardware. 2015-03-25 [2015-08-05].
^ Birds of a Feather Meetings (IETF Pre-WG Efforts). Internet Engineering Task Force. [2015-08-05]. （原始内容存档于2015-08-09）.
^ NETVC BoF (PDF). Internet Engineering Task Force. 2015-03-24 [2015-08-06]. （原始内容存档 (PDF)于2015-03-25）.
^ New open standard for Ultra High Definition video will enable enhanced video playback. Alliance for Open Media. 2015-09-01 [2015-09-01]. （原始内容存档于2015-09-03）.
^ Stephen Shankland. Tech giants join forces to hasten high-quality online video. CNET. 2015-09-01 [2015-09-01]. （原始内容存档于2015-09-01）.

[GigaOm-1] Roettgers, Janko. Open codec pioneer leaves Red Hat, joins Mozilla to work on next-generation video codec. GigaOm. 2013-10-15 [2014-04-20]. （原始内容存档于2014-03-29）.

[patents-2] Sebastian Grüner (golem.de), February 1, 2015: Freier Videocodec: Daala muss Technik patentieren (german)

[IntroducingDaalaJune2013Xiph-3] Monty. Introducing Daala. Xiph.Org Foundation. 2013-06-20 [2013-06-21]. （原始内容存档于2013-06-23）.

[Tran_et_al-4] Lapped Transform via Time-Domain Pre- and Post-Filtering （页面存档备份，存于互联网档案馆）, Trac D. Tran, Jie Liang, Chengjie Tu, IEEE Transactions on Signal Processing, vol. 51, no. 6, June 2003, accessed 2013-06-22.

[Malvar-5] 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.

[NETVCMarch2015Toms-6] Lucian Armasu. IETF Begins Standardization Process For Next-Generation 'NETVC' Video Codec (Daala). Tom's Hardware. 2015-03-25 [2015-08-05].

[NETVCMarch2015BOF92-7] Birds of a Feather Meetings (IETF Pre-WG Efforts). Internet Engineering Task Force. [2015-08-05]. （原始内容存档于2015-08-09）.

[NETVCMarch2015PDF-8] NETVC BoF (PDF). Internet Engineering Task Force. 2015-03-24 [2015-08-06]. （原始内容存档 (PDF)于2015-03-25）.

[AOMPR2015September-9] New open standard for Ultra High Definition video will enable enhanced video playback. Alliance for Open Media. 2015-09-01 [2015-09-01]. （原始内容存档于2015-09-03）.

[AOMCNet2015September-10] Stephen Shankland. Tech giants join forces to hasten high-quality online video. CNET. 2015-09-01 [2015-09-01]. （原始内容存档于2015-09-01）.

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