Daala: Difference between revisions

From XiphWiki

Latest revision as of 20:24, 25 May 2021

Daala is the codename for a new video compression technology.

The effort is a collaboration between the Mozilla Foundation, the Xiph.Org Foundation and any other contributors that wish to help.

The goal of the project is to provide a video format that's free to implement, use and distribute, and a reference implementation with technical performance superior to H.265.

Please see the links below or the main page for more information.

Wiki Pages

Daala Weekly Meetings

Intra-prediction within Daala

Digital Primers - educational videos about audio/video technology

Communication

You are encouraged to join the

Weekly Meetings

You are also welcome to attend the public weekly progress meetings by installing and using Mumble.
The address is mf4.xiph.org and the port is 64738 (you can run mumble://mf4.xiph.org:64738 within your browser as a shortcut).
The meetings occur on Tuesdays at 9AM Pacific Time (5PM UTC/GMT). The meeting agenda used to be available at this Etherpad, the October 13, 2015 meeting is available on Google Docs and, following the migration to Etherpad Lite, the meeting agenda and minutes are now available at this Etherpad.

Other

Doom9 Forum discussion - generic forum thread regarding Daala
~~Daala Etherpads - you can request a free account to view these. You should receive access within a few days.~~ Mozilla are transitioning to Etherpad Lite.
Daala Project Status Board - what Daala bits the Mozilla people are working on

Coding

You can get a copy of the latest Daala Source Code from git.xiph.org or GitHub. Please stick to the Coding Style Guide.

Xiph Code Reviews - there is a proposal on the review process here
Daala's issues - Issue/bug tracker on Github
Continuous Integration Tests - these run every time a new commit is made to the Daala git master, to make sure the new code hasn't broken existing functionality.
OggDaala - definitions for embedding Daala video within an Ogg container.

Demos

Daala Video Player - an example implementation of a Daala decoder and player, ported to Javascript using Emscripten.

Codec Techniques

Demo Articles - explanations on certain techniques used in Daala (and other Xiph.Org projects)
Edge-Directed Interpolation (source code)
More Edge-Directed Interpolation
Intra-prediction
Macroblock Coefficient Zigzag Graph - HTML page generated using tools/draw_zigzags.c from the Daala source code.
Still Image Screenshots - comparison between Daala's Lapped Transform and Haar methods, and JPEG/x264/x265.

Documents

Chroma from Luma (CfL)
Perceptual Vector Quantisation (PVQ) - see also Applying PVQ Outside Daala
Overlapped Block Motion Compensation (OBMC)
C API Documentation
Image Coding Thesis by Yushin Cho
Maximising Coding Efficiency Through Block Rotation and why it won't work well within Daala
JMSpeex' Journal of Dubious Theoretical Results - "take with an entire shaker-full of salt"
Using Daala Intra Frames for Still Picture Coding
The Daala Directional Deringing Filter
Daala: A Perceptually-Driven Still Image Codec(draft) - submitted at ICIP 2016.
SIMD Assembly Tutorial: ARM NEON
Daala Technologies Poster

IETF Drafts

Time-Domain Lapped Transforms (TDLT) - documents the Lapped Transform pre- and post-filters used for block-edge decorrelation
Perceptual Vector Quantisation (PVQ) -
Coding Tools - documents Entropy Coding, Integer Transforms and other techniques
Internet Video Codec (NetVC) Requirements - explains what requirements and use cases Daala is trying to cater for
Internet Video Codec (NetVC) Testing and Quality Measurement
Example IPR Licence Terms

Additional drafts can be found at the IETF DataTracker.

Presentations

For a more in-depth look at the IETF's NetVC Meetings, use the IETF DataTracker.

2017-11-15 - IETF 100 - Video - Slides
2017-05-25 - IETF 98 - NetVC Hackathon Slides, CDEF Slides
2017-02-05 - FOSDEM 2017 - Video - Slides
2017-01-17 - Linux Conf AU - Video - Slides

2016-11-15 - IETF 97 - Agenda - Video and Chat - Slides
2016-09-04 - VideoLAN Dev Days 2016 - Video - Slides
2016-08-31 - SPIE Royalty-free Video - Schedule and Abstracts - Video - Slides
2016-07-18 - IETF 96 - Agenda - Video and Chat - Slides
2016-06-27 - Daala's Entropy Coder - Slides
2016-04-07 - IETF 95 - Agenda - Video and Chat - Slides - Other Materials
2016-04-01 - DCC 2016 - Slides - Paper
2016-01-30 - FOSDEM 2016 - Summary - Video (MP4, 57MB) - Slides

2015-11-02 - IETF 94 - Agenda - Video and Chat - Other Materials
2015-10-24 - LinuxDay 24 (Turin) - Slides
2015-10-21 - MPEG 113 - Future Video Coding Workshop - Slides
2015-09-19 - VideoLAN Dev Days - YouTube Playlist - Daala Slides
2015-07-22 - IETF 93 - NetVC Session 2/2 - Agenda - Video and Chat - Slides - Jabber Log - Other Materials
2015-07-20 - IETF 93 - NetVC Session 1/2 - Agenda - Video and Chat - Slides - Jabber Log
2015-03-24 - IETF 92 - NetVC Session - Audio as Opus (29MB) or MP3 (119MB, action starts at 14:50) - Slides - Notes - Jabber Log
2015-02-11 - SPIE talks:
2015-01-31 - Daala Project Update at FOSDEM 2015 - summary - Slides
2015-01-14 - Linux Conf 2015 - presentation summary - Slides

2014-09-16 - Daala: Are We Compressed Yet?
2014-06-25 - Sparsity Induced Prediction for Images and Video
2014-06-06 - VP9 Summit (no video available) - Slides

2013-10-23 - Opus and Daala: State of the Art Royalty-free Codecs - Slides
2013-09-30 - Daala Coding Party 2 - Slides
2013-05-02 - Tim Terriberry Presents Daala

2012-01-24 - Introduction to Video Coding - Slides (no video for slides 1-50)

Other Websites

Daala Presentations on YouTube
Google's Compressor Head videos - a beginner's introduction to the world of data compression
Daala T-shirts - if you'd like a free one, help out with the project and ask the Mozilla guys nicely for one :-)
Donate to Xiph.Org
Historical Daala wiki page

Retrieved from "https://wiki.xiph.org/index.php?title=Daala&oldid=16774"

Category:

Daala

@@ Line 26: / Line 26: @@
 == Communication ==
 You are '''encouraged''' to join the
-* [irc://irc.freenode.net/daala '''#daala''' IRC channel at freenode.net] - if you don't have an IRC client, you can use Freenode's '''[https://webchat.freenode.net/?channels=%23daala webchat]''' instead.
+* [irc://irc.libera.chat/daala '''#daala''' IRC channel at libera.chat].
 * [http://lists.xiph.org/mailman/listinfo/daala Daala Email List]
@@ Line 57: / Line 57: @@
 * [https://people.xiph.org/~unlord/demo/intra.html Intra-prediction]
 * [https://people.xiph.org/~unlord/zigzags.html Macroblock Coefficient Zigzag Graph] - HTML page generated using [https://github.com/xiph/daala/blob/master/tools/draw_zigzags.c tools/draw_zigzags.c] from the Daala source code.
+* [https://jmvalin.ca/video/haar_example/ Still Image Screenshots] - comparison between Daala's Lapped Transform and Haar methods, and JPEG/x264/x265.
 == Documents ==
@@ Line 70: / Line 71: @@
 * [https://people.xiph.org/~unlord/icip2016.pdf Daala: A Perceptually-Driven Still Image Codec](draft) - submitted at [http://2016.ieeeicip.org/ ICIP 2016].
 * [http://people.xiph.org/~tterribe/daala/neon_tutorial.pdf SIMD Assembly Tutorial: ARM NEON]
+* [https://jmvalin.ca/video/mmsp2016_poster.pdf Daala Technologies Poster]
 === IETF Drafts ===
@@ Line 84: / Line 86: @@
 For a more in-depth look at the IETF's NetVC Meetings, use the [https://datatracker.ietf.org/wg/netvc/meetings/ IETF DataTracker].
+* 2017-11-15 - IETF 100 - [https://www.youtube.com/watch?v=_wRLR8ypCg0&t=4682s Video] - [https://docs.google.com/presentation/d/12BsMrcGo27bgf7OMpOmlIZUEBblMmBXESCeG3_FZ5cI/edit#slide=id.p Slides]
+* 2017-05-25 - IETF 98 - [https://datatracker.ietf.org/meeting/98/materials/slides-98-hackathon-netvc/ NetVC Hackathon Slides], [https://jmvalin.ca/video/cdef_slides.pdf CDEF Slides]
+* 2017-02-05 - FOSDEM 2017 - [https://video.fosdem.org/2017/K.3.401/om_av1.vp8.webm Video] - [https://fosdem.org/2017/schedule/event/om_av1/attachments/slides/1795/export/events/attachments/om_av1/slides/1795/av1_update.pdf Slides]
+* 2017-01-17 - Linux Conf AU - [https://www.youtube.com/watch?v=lzPaldsmJbk Video] - [https://people.xiph.org/~tterribe/pubs/lca2017/aom.pdf Slides]
+-------
 * 2016-11-15 - IETF 97 - [https://datatracker.ietf.org/meeting/97/agenda/netvc/ Agenda] - [http://recs.conf.meetecho.com/Playout/watch.jsp?recording=IETF97_NETVC&chapter=chapter_1 Video and Chat] - [https://datatracker.ietf.org/meeting/97/session/netvc/ Slides]
 * 2016-09-04 - VideoLAN Dev Days 2016 - [https://www.youtube.co.uk/watch?v=AOssZFJ0EdI Video] - [http://people.xiph.org/~tterribe/daala/vdd2016.pdf Slides]
@@ Line 105: / Line 112: @@
 ** [http://people.xiph.org/~tdaede/video/SPIE_Nathan.webm Chroma from Luma (CfL)] - [https://people.xiph.org/~unlord/SPIE-2015-CfL.pdf Slides] - [https://people.xiph.org/~unlord/spie_cfl.pdf Paper]
 ** [http://people.xiph.org/~tdaede/video/SPIE_PVQ.webm Perceptual Vector Quantisation (PVQ)] - [http://people.xiph.org/~tterribe/daala/spie_pvq_slides.pdf Slides] - [http://jmvalin.ca/papers/spie_pvq.pdf Paper]
-** [http://people.xiph.org/~tdaede/video/SPIE_Tim.webm Overlapped Block Motion Compensation (OBMC)] - [http://people.xiph.org/~tterribe/daala/spie_obmc_slides.pdf Slides] - [https://people.xiph.org/~tterribe/daala/vbsobmc.pdf Paper]
+** [http://people.xiph.org/~tdaede/video/SPIE_Tim.webm Adaptive Motion Compensation Without Blocking Artifacts] - [http://people.xiph.org/~tterribe/daala/spie_obmc_slides.pdf Slides] - [https://people.xiph.org/~tterribe/daala/vbsobmc.pdf Paper]
 * 2015-01-31 - [http://ftp.osuosl.org/pub/fosdem/2015/devroom-open_media/daala.mp4 Daala Project Update at FOSDEM 2015] - [https://fosdem.org/2015/schedule/event/daala/ summary] - [https://fosdem.org/2015/schedule/event/daala/attachments/slides/569/export/events/attachments/daala/slides/569/Daala_FOSDEM_2015.pdf Slides]
 * 2015-01-14 - [https://www.youtube.co.uk/watch?v=Dmho4gcRvQ4 Linux Conf 2015] - [http://lca2015.linux.org.au/schedule/30187/view_talk presentation summary] - [https://people.xiph.org/~tterribe/pubs/lca2015/daala.pdf Slides]