Real-Time #AV1 SVC – Unleashing the True Power of #WebRTC

AV1 real-time encoding in standalone webrtc and MilliCast platform was already available since April 2020, as we already covered in previous posts. For those who wanted to use it by themselves in a web app, however, you had to recompile Chrome. While we provided pre-compiled binaries for the community and the happy few brave enough to test it that early, it was a single layer implementation and did not support SVC.

As usage of codec evolves from closed circuits and dedicated lines to be more and more over the public internet, codecs themselves evolves and adopt feature to make media experience over public internet better. A late Annex of H264 (Annex G), SVC has evolved as a mandatory to have feature for any modern codecs. AV1 is the first codec to supports SVC by default. For those interested in more details about how SVC helps, Dr Alex E. wrote a great explanatory blog post back in 2016. Written about VP9, most of the points stay valid for AV1.

For all of last year, the Real-Time Group at AOMEDIA (part of the code group), was hard at work to finish the RTP payload specification which allow for RTP end points to leverage all the codec SVC features, but also for intermediate SFU to be better, stronger and faster. Cosmo Software spearheaded the implementation of all the tests and a reference SFU. The AV1 RTP payload specification is now almost final, tested up to 95%+.

Now is a good time to revisit why AV1 is more important to real-time media beyond just improved compression efficiency. We will also provide details about what to expect in terms of performance.

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Remote Post-Production: Real-Time #WebRTC Streaming in OBS & Beyond

It’s Xmas! Or, depending on your time zone, it’s about to be Christmas. It’s the season to be jolly, and CoSMo would like to bring you a few gifts.

While we have been hard at work in the background to make sure #Webrtc gets better (some overview of that here), we have put a lot of effort in the last year into remote collaboration workflows for content production and post production.

Which is why we are releasing multiple products and services in time for Christmas, bringing Broadcast Quality to Real-Time streaming across devices.

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Teradek products upgraded to support Fastest Real-Time Streaming platform MilliCast

Thanks to a collaborative work between Millicast and Teradek engineering teams, Teradek products have now best in class support of the platform. This shows the dedication of Teradek to position themselves as the best provider for live and real-time encoders, and MilliCast to extend their support of capture devices and Hardware encoders.

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WHIP – Make WebRTC easy to use for Media Platforms ingest

From the broadcasting industry perspective, WebRTC is not “complete”. It can’t be implemented once and forgotten, like many other protocols before. It lacks a standard signalling protocol to go along. From the web industry perspective, it’s a wanted feature, and it did allow the protocol to be used for vastly different use cases than originally anticipated or designed for. That situation has been frozen in place for many years, as neither the web community (we have what we want), nor the broadcasting community (who needs realtime anyway, VOD will rule forever), seem to be interested in jumping in and filling the gap. Until COVID-19 that is ….

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How to enable HEVC/H265 and AV1 in #webrtc in your browser.

CoSMo provided the H264 simulcast implementation to chrome and safari (based on earlier patch by highfive, kudos to them). We helped Intel and Apple work together to put H265 in libwebrtc. AOMedia members, we also were among the first to have a realtime implementation of AV1 in libwebrtc, and have been regularly speaking publicly at different conferences about it. Today, some of this work is becoming available in consumer versions of the browser. Let us give you through enabling it, and taking it out for a ride.

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State of #webrtc in Media Streaming and Broadcast

With COVID-19 out there, people have to reinvent the way they live and the way they work, remotely from the office but also remotely from each other. Webrtc technology being rooted in conferencing and collaboration, those topic understandingly take the front line.

However, this is not the only space being disrupted by WebRTC.

For a certain time, webrtc has been pushing the boundaries of can be done in real-time streaming, and the pandemic is only accelerating this. This blog post is a follow-up of previous posts and show the evolution of the situation, and how the pandemic is actually creating new use cases and transforming the streaming market.

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Surround Sound (5.1 and 7.1) in lib#webrtc and Chrome

While scalability is often the first excuse some use not to use WebRTC, a persistent claim even though that myth has been debunked long ago and many time over since, “quality” is certainly the second one. Webrtc cannot do <put a resolution here>, it’s just good enough for webcams, it cannot use more than 2.5 Mbps, ….. . While all of those previous claims are false, there is one that was correct: the default audio codecs in webrtc implementations, and especially in browsers, are not as good when it comes to spatial info than their streaming or gaming counterparts… untill recently!

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