• Bitrates
    IETF - Janus - Meetecho - WebRTC

    Bandwidth Estimation (BWE) and Janus

    November 27, 2023 - By 

    A few weeks ago I attended the first edition of what turned out to be a great event, RTC.On, and I took that opportunity to submit a talk on something I wanted to work on for quite some time: bandwidth estimation in WebRTC and, more specifically, Janus. The main objective of that presentation was not only to “force” myself to work on this topic and share the results, but also to try and provide everyone with some more insight on what is ostensibly one of WebRTC’s best kept “secrets”: not out of malice (at least I don’t think so), but…

  • Janus - Meetecho - WebRTC

    Improving the AudioBridge plugin

    July 11, 2023 - By 

    As an audio mixer and MCU, the AudioBridge plugin is quite a popular plugin among Janus users and developers. It’s definitely a foundational component in our own Virtual Event Platform, for instance, where while we use an SFU approach for video streams, audio is always mixed instead. I mentioned efforts around this plugin a few times already, like when I discussed how to use it to build social audio applications like Clubhouse or Twitter Spaces, or how it could be bridged (pun unintended!) to the SIP world. I also stressed out the importance of audio in the WebRTC world when…

  • Janus - Meetecho - WebRTC

    Playing with VP9/AV1 simulcast (and AV1/SVC!)

    May 15, 2023 - By 

    I only recently found out that Chrome has started shipping experimental support for VP9 and AV1 simulcast. If you’ve visited this blog before, you know what simulcast is already (if you don’t, make sure you read this post first!) and you may recall we’ve talked, on separate occasions, about both codecs, but typically with respect to their SVC capabilities, namely in the post on VP9/SVC support in Janus, and the one on our AV1/SVC experiments. Of course, I was very much interested in checking out how I could extend the simulcast support we have in Janus to VP9 and AV1…

  • IETF - Janus - Meetecho - WebRTC - WHEP - WHIP

    WHEP qui?

    April 17, 2023 - By 

    It’s been a while since last time we spoke of WHEP: just to brush up your memory, it was a few months ago, when we first introduced WHEP as a companion protocol to WHIP, that we had talked about a few other times already. At the time, we explained how WHIP and WHEP both play a quite important role in the future of WebRTC-based broadcasting. WHIP (WebRTC-HTTP ingestion protocol) is a protocol that was conceived to facilitate the process of media ingestion via WebRTC, something that in “traditional” broadcasting is usually done by means of protocols like RTMP. WHEP (WebRTC-HTTP…