[rtcweb] Reference implementation of software codecs (was: Video codec selection - way forward)
cowwoc <cowwoc@bbs.darktech.org> Mon, 18 November 2013 17:45 UTC
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Date: Mon, 18 Nov 2013 12:38:15 -0500
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Subject: [rtcweb] Reference implementation of software codecs (was: Video codec selection - way forward)
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Okay, so I believe this is an open issue. I've changed the topic to avoid hijacking the old thread. Gili On 18/11/2013 12:14 PM, Maik Merten wrote: > Regarding H.261, apart from ffmpeg there's also a maintained > implementation over at > > http://sourceforge.net/p/opalvoip/code/29319/tree/opal/trunk/plugins/video/H.261-vic/h261vic.cxx > > > which is covered by the Mozilla Public License 1.0 > (http://www.mozilla.org/MPL/1.0/). > > "3.7. Larger Works. > You may create a Larger Work by combining Covered Code with other code > not governed by the terms of this License and distribute the Larger > Work as a single product. In such a case, You must make sure the > requirements of this License are fulfilled for the Covered Code." > > The H.261 *en*coder of that project looks rather primitive (only > generating I-frames), but the *de*coder should be feature-complete. > Perhaps that's something to build upon. > > I would also suspect that complete and battle-tested implementations > gather dust at some vendors of telco stuff, but nobody seems to have > open sourced one. > > > > Maik > > > Am 18.11.2013 17:44, schrieb cowwoc: >> >> Looks good! I'd like to get a clarification which affects multiple >> options, but #10 most of all. >> >> Does the WG commit to providing reference implementations that supports >> VP8, H.264, H.261 with a commercially-friendly license? I am talking >> strictly about the software license, not the codec IPR. Meaning, libx264 >> requires a GPL license and ffmpeg requires either a LGPL or GPL license. >> I would argue that libx264 is a non-starter for commercial use on any >> platform (due to GPL) and ffmpeg is not usable under iOS (since LGPL + >> static linking is equivalent to GPL). It is my understanding that the >> current WebRTC reference implementation is published under the BSD >> license. I am asking for the final reference implementation (supporting >> these codecs) to be published under the same license. >> >> I'm not saying that anyone has to ship a reference implementation >> supporting all 3 codecs, but rather that the WG should publish a >> reference implementation demonstrating how it can be done and proving >> interoperability actually works as expected. >> >> Thanks, >> Gili >> >> On 18/11/2013 7:45 AM, Magnus Westerlund wrote: >>> WG, >>> >>> The current list of proposed alternative are the following one: >>> >>> The following alternatives has been proposed: >>> >>> 1. All entities MUST support H.264 >>> 2. All entities MUST support VP8 >>> 3. All entities MUST support both H.264 and VP8 >>> 4. Browsers MUST support both H.264 and VP8, other entities MUST >>> support at least one of H.264 and VP8 >>> 5. All entities MUST support at least one of H.264 and VP8 >>> 6. All entities MUST support H.261 >>> 7. There is no MTI video codec >>> 8. 5+6, i.e. All entities MUST support H.261 and all entities MUST >>> support at least one of H.264 and VP8 >>> 9. All entities MUST support Theora. >>> 10. All entities SHOULD support both H.264 and VP8. All entities MUST >>> at least implement one of those. Entities that do not support >>> both >>> H.264 and VP8 MUST implement H.261. >>> >>> The deadline to propose additional alternatives are: 27th of November >>> 2013 >>> >>> Cheers >>> >>> Magnus >>> >>> On 2013-11-13 21:23, Gonzalo Camarillo wrote: >>>> Folks, >>>> >>>> I hope everybody had a safe trip back home after Vancouver. >>>> >>>> As you all know, we need to make progress regarding the selection >>>> of the >>>> MTI video codec. The following are some of the alternatives we have on >>>> the table: >>>> >>>> 1. All entities MUST support H.264 >>>> 2. All entities MUST support VP8 >>>> 3. All entities MUST support both H.264 and VP8 >>>> 4. Browsers MUST support both H.264 and VP8 >>>> 5. All entities MUST support either H.264 or VP8 >>>> 6. All entities MUST support H.261 >>>> 7. There is no MTI video codec >>>> >>>> If you want the group to consider additional alternatives to the ones >>>> above, please let the group know within the following *two weeks*. At >>>> that point, the chairs will be listing all the received >>>> alternatives and >>>> proposing a process to select one among them. >>>> >>>> Please, send your proposals in an email to the list. You do not >>>> need to >>>> write a draft; just send the text you would like to see in the final >>>> document regarding video codecs. >>>> >>>> Thanks, >>>> >>>> Gonzalo >>>> Responsible AD for this WG >>>> >>>> _______________________________________________ >>>> rtcweb mailing list >>>> rtcweb@ietf.org >>>> https://www.ietf.org/mailman/listinfo/rtcweb >>>> >>>> >>> >> >> _______________________________________________ >> rtcweb mailing list >> rtcweb@ietf.org >> https://www.ietf.org/mailman/listinfo/rtcweb > > _______________________________________________ > rtcweb mailing list > rtcweb@ietf.org > https://www.ietf.org/mailman/listinfo/rtcweb
- [rtcweb] Video codec selection - way forward Gonzalo Camarillo
- Re: [rtcweb] Video codec selection - way forward cowwoc
- Re: [rtcweb] Video codec selection - way forward Stephan Wenger
- Re: [rtcweb] Video codec selection - way forward Jonathan Rosenberg
- Re: [rtcweb] Video codec selection - way forward Bernard Aboba
- Re: [rtcweb] Video codec selection - way forward cb.list6
- Re: [rtcweb] Video codec selection - way forward Robin Raymond
- Re: [rtcweb] Video codec selection - way forward cowwoc
- Re: [rtcweb] Video codec selection - way forward cowwoc
- Re: [rtcweb] Video codec selection - way forward Gustavo Garcia
- Re: [rtcweb] Video codec selection - way forward Leon Geyser
- Re: [rtcweb] Video codec selection - way forward Gonzalo Camarillo
- Re: [rtcweb] Video codec selection - way forward Magnus Westerlund
- Re: [rtcweb] Video codec selection - way forward Magnus Westerlund
- Re: [rtcweb] Video codec selection - way forward Leon Geyser
- Re: [rtcweb] Video codec selection - way forward Gonzalo Camarillo
- Re: [rtcweb] Video codec selection - way forward Magnus Westerlund
- Re: [rtcweb] Video codec selection - way forward Magnus Westerlund
- Re: [rtcweb] Video codec selection - way forward Magnus Westerlund
- Re: [rtcweb] Video codec selection - way forward Jeremy Fuller
- Re: [rtcweb] Video codec selection - way forward Jonathan Rosenberg
- Re: [rtcweb] Video codec selection - way forward Gili
- Re: [rtcweb] Video codec selection - way forward David Singer
- Re: [rtcweb] Video codec selection - way forward Bjoern Hoehrmann
- Re: [rtcweb] Video codec selection - way forward Leon Geyser
- Re: [rtcweb] Video codec selection - way forward Harald Alvestrand
- Re: [rtcweb] Video codec selection - way forward cowwoc
- Re: [rtcweb] Video codec selection - way forward Magnus Westerlund
- Re: [rtcweb] Video codec selection - way forward cowwoc
- Re: [rtcweb] Video codec selection - way forward Eric Rescorla
- Re: [rtcweb] Video codec selection - way forward Magnus Westerlund
- Re: [rtcweb] Video codec selection - way forward cowwoc
- Re: [rtcweb] Video codec selection - way forward cowwoc
- Re: [rtcweb] Video codec selection - way forward Eric Rescorla
- Re: [rtcweb] Video codec selection - way forward Basil Mohamed Gohar
- Re: [rtcweb] Video codec selection - way forward Maik Merten
- Re: [rtcweb] Video codec selection - way forward Thomas Reisinger
- Re: [rtcweb] Video codec selection - way forward Basil Mohamed Gohar
- Re: [rtcweb] Video codec selection - way forward cowwoc
- Re: [rtcweb] Video codec selection - way forward Thomas Reisinger
- Re: [rtcweb] Video codec selection - way forward Ross Finlayson
- Re: [rtcweb] Video codec selection - way forward Leon Geyser
- Re: [rtcweb] Video codec selection - way forward Maik Merten
- Re: [rtcweb] Video codec selection - way forward Thomas Reisinger
- Re: [rtcweb] Video codec selection - way forward Maik Merten
- Re: [rtcweb] Video codec selection - way forward Magnus Westerlund
- Re: [rtcweb] Video codec selection - way forward Magnus Westerlund
- Re: [rtcweb] Video codec selection - way forward Magnus Westerlund
- [rtcweb] H.263 licensing situation Stephan Wenger
- Re: [rtcweb] Video codec selection - way forward cowwoc
- Re: [rtcweb] Video codec selection - way forward Maik Merten
- [rtcweb] Reference implementation of software cod… cowwoc
- Re: [rtcweb] Reference implementation of software… cowwoc
- Re: [rtcweb] Reference implementation of software… Maik Merten
- Re: [rtcweb] Video codec selection - way forward DRAGE, Keith (Keith)
- Re: [rtcweb] Video codec selection - way forward DRAGE, Keith (Keith)
- Re: [rtcweb] Video codec selection - way forward David Singer
- Re: [rtcweb] Video codec selection - way forward Bernard Aboba
- Re: [rtcweb] Video codec selection - way forward Maik Merten
- Re: [rtcweb] Video codec selection - way forward Gili
- Re: [rtcweb] Video codec selection - way forward Bernard Aboba
- Re: [rtcweb] Video codec selection - way forward Gili
- Re: [rtcweb] Video codec selection - way forward Maik Merten
- Re: [rtcweb] Video codec selection - way forward Bernard Aboba
- Re: [rtcweb] Video codec selection - way forward Maik Merten
- Re: [rtcweb] Video codec selection - way forward David Singer
- Re: [rtcweb] Video codec selection - way forward Magnus Westerlund
- Re: [rtcweb] Video codec selection - way forward Maik Merten
- Re: [rtcweb] Video codec selection - way forward Adam Roach
- Re: [rtcweb] Video codec selection - way forward David Singer
- Re: [rtcweb] Video codec selection - way forward Cullen Jennings
- Re: [rtcweb] Video codec selection - way forward David Singer
- Re: [rtcweb] Video codec selection - way forward Cullen Jennings
- Re: [rtcweb] Video codec selection - way forward Maik Merten
- Re: [rtcweb] Video codec selection - way forward Maik Merten
- Re: [rtcweb] Video codec selection - way forward Leon Geyser
- Re: [rtcweb] Video codec selection - way forward Eric Rescorla
- Re: [rtcweb] Video codec selection - way forward Martin Thomson
- Re: [rtcweb] Video codec selection - way forward Steve Kann
- Re: [rtcweb] Video codec selection - way forward Eric Rescorla
- Re: [rtcweb] Video codec selection - way forward Monty Montgomery
- Re: [rtcweb] Video codec selection - way forward Matt Fredrickson
- Re: [rtcweb] Video codec selection - way forward Eric Rescorla
- Re: [rtcweb] Video codec selection - way forward Martin Thomson
- Re: [rtcweb] Video codec selection - way forward Enrico Marocco
- Re: [rtcweb] Video codec selection - way forward Cullen Jennings
- Re: [rtcweb] Video codec selection - way forward Matthew Kaufman
- [rtcweb] cisco binary on ec2 Cullen Jennings
- Re: [rtcweb] cisco binary on ec2 Matt Fredrickson
- Re: [rtcweb] cisco binary on ec2 Lorenzo Miniero
- Re: [rtcweb] Video codec selection - way forward cb.list6
- [rtcweb] H.264 CBP (was: Video codec selection - … cowwoc
- Re: [rtcweb] H.264 CBP (was: Video codec selectio… Eric Rescorla
- Re: [rtcweb] H.264 CBP (was: Video codec selectio… Stefan Slivinski
- Re: [rtcweb] cisco binary on ec2 Cullen Jennings
- Re: [rtcweb] cisco binary on ec2 cowwoc
- Re: [rtcweb] cisco binary on ec2 Roman Shpount