Daala

Daala
副檔名	.ogv
網路媒體型式	video/ogg
開發者	Xiph.Org、Mozilla、IETF
格式類型	視頻壓縮
使用容器	Ogg
延伸為	AV1
免費格式？	是
網站	xiph.org/daala

Daala是一個免專利使用費的影像編碼格式，由Xiph.Org基金會和主要的贊助者Mozilla進行開發，開發者領導者為Timothy B. Terriberry^[1]。Daala的命名來源是星際大戰中的女性角色Admiral Natasi Daala。

參考實做為C語言，以BSD授權條款的形式開放原始碼，使用的專利可以讓任何人在任何情況下使用^[2]。自2013年6月20日開始，Xiph.Org基金會陸續發布了一些開發進度報告，以及使用到的技術介紹於網站上^[3]^[4]^[5]。目前Daala為IETF的NETVC專案和開放媒體聯盟的AOMedia Video 1（AV1）其中一個候選技術^[6]^[7]^[8]^[9]^[10] 。

參考資料

^ Roettgers, Janko. Open codec pioneer leaves Red Hat, joins Mozilla to work on next-generation video codec. GigaOm. 2013-10-15 [2014-04-20]. （原始內容存檔於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]. （原始內容存檔於2013-06-23）.
^ Lapped Transform via Time-Domain Pre- and Post-Filtering （頁面存檔備份，存於網際網路檔案館）, 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]. （原始內容存檔於2015-08-09）.
^ NETVC BoF (PDF). Internet Engineering Task Force. 2015-03-24 [2015-08-06]. （原始內容存檔 (PDF)於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]. （原始內容存檔於2015-09-03）.
^ Stephen Shankland. Tech giants join forces to hasten high-quality online video. CNET. 2015-09-01 [2015-09-01]. （原始內容存檔於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]. （原始內容存檔於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]. （原始內容存檔於2013-06-23）.

[Tran_et_al-4] Lapped Transform via Time-Domain Pre- and Post-Filtering （頁面存檔備份，存於網際網路檔案館）, 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]. （原始內容存檔於2015-08-09）.

[NETVCMarch2015PDF-8] NETVC BoF (PDF). Internet Engineering Task Force. 2015-03-24 [2015-08-06]. （原始內容存檔 (PDF)於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]. （原始內容存檔於2015-09-03）.

[AOMCNet2015September-10] Stephen Shankland. Tech giants join forces to hasten high-quality online video. CNET. 2015-09-01 [2015-09-01]. （原始內容存檔於2015-09-01）.

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