ORTC Library – Introduction
The Object RTC initiative is a project supported by Hookflash, Microsoft, Google and others. The ORTC C++ Library is a project maintained by Hookflash. To sponsor ORTC Lib projects send an email to firstname.lastname@example.org
Do you really want a dual MTI video codec for WebRTC?
Update: There is now some healthy conversation in the IETF WG around what “compliant” and “compatible” actually mean. More on this as it unfolds.
We are now in the final throes of a consensus call in the IETF around which video codec should be made mandatory for those building WebRTC apps, services et al, who wish to be considered “WebRTC Compliant”. The codec contenders are VP8 and H.264, in many forms and combinations.
This latest consensus call is for both codecs to be mandated for all WebRTC endpoints, or “dual MTI codec”. I am sure I will catch hell from someone on language but that is the essence of it. As one might expect, there are some that are in favor and some that are against a dual MTI video codec. Those in favor seem motivated to accept this based on the promise of interoperability that might follow and other reasons. As one might expect, we are all quite eager to put this debate to bed so we could get on with other work.
This is not a decision that should be made lightly. Let’s consider the implications. Imposing a dual MTI suggests that every developer that wishes to produce a WebRTC compliant app must implement both codecs.
Coming from a co-founder of an RTC toolkit vendor I can tell you that this does not sit very well with me, nor others in the WebRTC WG. One glance at the thread comments should provide some insight.
I find it difficult to agree to mandate a dual MTI codec knowing that there are a great many developers who will not want or will be in a position to implement both codecs. Yes, many WebRTC SDK vendors will support both. Even if both codecs and their transports are provided as part or could be easily added to the application at compile time it doesn’t mean that every developer will want to implement or ship both codecs.
Bottom line is, according this consensus, if developers do not implement/ship both codecs they are not considered WebRTC compliant. To me, this seems like a rather unreasonable expectation. Developers should be able to choose which codec they ship, and not be forced to do 2x the work to become compliant.
I would love to hear from other developers on this. Do you plan on implementing both VP8 and H.264 in your apps?
ORTC Interview: webrtchacks’ Chad Hart & Robin Raymond #webrtc
webrtcH4cKS: ~ ORTC is not the “Other” RTC: Q&A with ORTC CG Chair Robin Raymond
Char Hart of webrtchacks.com interviewed ORTC Chair – Robin Raymond on a range of topics. Excerpt:
Biggie vs. Tupac. Gates vs. Jobs. Apple vs. Samsung. Nothing catches people’s attention for no legitimate reason like a feud. Unfortunately this isn’t just a celebrity phenomenon. Feuds have been endemic even to real communications as well. From the very beginning, Elisha Gray’s dispute with Alexander Graham Bell over the original telephone patent showed the industry has a propensity for squabbles…
2014 WebRTC & ORTC Events – Fall / Winter Schedule
- Sept 30 – Oct 2 / Chicago – IIT Real-time Communications Conference
(For me, this is “the” objective gathering of the brightest technical minds in the RTC space.) Robin Raymond will be speaking on ORTC / WebRTC 1.1 and also Cloud + P2P Communications.
- 30-31 Oct / Santa Clara – W3C TPAC / WebRTC WG Meeting
(W3C Technical Plenary / Advisory Committee Meetings Week which includes WebRTC Working Group meetings. This should be a rather interesting set of meetings for the WebRTC WG, for a variety of reasons.)
(tba) Oct ? / Web – W3C ORTC Community Group Meeting
- Nov 4-6 / Santa Clara – Cloud Expo / WebRTC Summit
(One of the bigger events, plenty more happening here than just WebRTC.) Erik Lagerway will be speaking on Real-time Communications, PaaS & Cloud Communications.)
- Nov 9-14 / Honolulu – IETF Meeting 91 / RTCWEB WG Meetings
- Nov 18-20 / San Jose – WebRTCworld Conference West
- Dec 16-18 / Paris – WebRTC Conference Expo Paris
Hookflash, Google and Microsoft lead on ORTC / WebRTC 1.1 Public Draft
The first ORTC Public Draft Specification has been published, authored by Hookflash, Microsoft, and Google. (http://ortc.org/wp-content/uploads/2014/08/ortc.html ) This specification extends WebRTC 1.0 with new functionality to create a WebRTC 1.1 API with exceptional flexibility and no loss of compatibility.
Like WebRTC, ORTC (Object Real-time Communication) enables plugin-free real-time communications for mobile, web and cloud, but is specifically tailored to provide the direct control needed to enable advanced multimedia and conferencing features.
“We heard developers say that they wanted more direct control over the technologies available in WebRTC. At the same time, we didn’t want existing developers to have to start over with a new API. ORTC is our proposal for how we can accomplish both of these things – a new set of APIs for direct control, that builds off the existing WebRTC 1.0 API set. As an evolution of the existing API, we consider this WebRTC 1.1” comments Justin Uberti, Google Tech Lead, WebRTC. “We’re grateful to Hookflash for their work to get ORTC off the ground. They have been instrumental in making this cross-industry collaboration happen, and we look forward to continuing our work with them.”
This newly published public draft has come a long way since the W3C ORTC Community Group was formed in mid-2013. As it has progressed from an initial set of ideas to a fleshed-out draft complete enough for implementations, several companies have gotten closely involved, with Microsoft and Google now joining Hookflash as authors of the emerging specification.
The W3C ORTC Community Group now numbers more than 60 participants.
“We believe the contributions to WebRTC 1.1 / ORTC will allow web communications technology to become ubiquitous and transcend nearly all communications technologies that came before it” says Hookflash Co-founder, Erik Lagerway, “We are honored to be working with some of the brightest minds at Google, Microsoft, and the other contributing members in the ORTC CG to mature WebRTC into a universal go-to toolkit enabling communications across the globe.”
For more information on ORTC, see:
W3C ORTC Community Group
ORTC.org – History and FAQs
WebRTC.is – ORTC & WebRTC news
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Developers can register at (http://fly.hookflash.me) to start using the Hookflash RTC service and toolkits today. For more information on Hookflash RTC toolkits and White Labeling please visit Hookflash http://hookflash.com.
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ORTC CG Meeting – 5
A few more changes to be made before we call for implementations, very, very close now. Should happen in next couple of weeks with new Editor’s draft.
Google Chrome 38-39 to ship with ORTC / WebRTC 1.1 APIs
For those who missed it, Chrome 38-39 looks like it will be shipping with ORTC 1.1 RTPSender / Receiver APIs as announced by Justin Uberti at Google I/O 2014. This really should not come as any surprise as RTPSender / Receiver APIs are now on track for WebRTC 1.0 integration as well, as per the last W3C WebRTC WG Interim meeting.
ORTC API Editor’s Draft – Last Call & WebRTC WG
The W3C ORTC Community Group has published an Editor’s Draft update to the ORTC API and is also asking for last call comments on the draft…
We are nearing completion of the ORTC specification for our initial ORTC community group draft. We are asking for last call feedback at this time. Some comments to explain some of the changes are still pending but all issues are tracked here and on github. If you would like to make comment, please have a read through and make comment either on this list or as part of our next CG meeting coming up.There are a few outstanding areas which are “pending” synchronization with WebRTC, e.g. stats, data channel, and IdP. As these have dependencies on WebRTC 1.0, we will attempt to complete the our specification as best we can but those areas will be subject to synchronization should updates come out of the WebRTC community group.Now is the time to have a read through for final review as the next stage will be to build implementations for implementation feedback.
So if you are fuzzy on where the ORTC CG is headed, you should really check out that video clip.
ORTC CG Meeting Video – Hookflash, Jitsi.org, Microsoft, Google and others.
Very productive CG call today, here is the entire 1 hour and 40 minutes. Plenty of great feedback coming from Bernard Aboba (Microsoft), Shijun Sun (Microsoft), Justin Uberti (Google), Emil Ivov (Jitsi.org) and Robin Raymond (Hookflash).
Looks like we are shooting for a Public Draft (with sample code) by end of June, we’ll see if that is achievable (there are quite a few question marks remaining) but at least we have a target.
If you are interested in joining the ORTC Community Group, you can do that here.