The slides for a talk I presented at the WebRTC track of IIT-RTC in Chicago, titled "SFU's, Simulcast and SVC: what's new in WebRTC?". Mostly a high-level introduction to how simulcast and SVC work (or not) today in browsers, how they came to be and where they might be headed from a standards perspective.
My (quite boring) slides on what we needed to do in Janus to support multiple streams of the same type (e.g., 3 video streams) on the same PeerConnection.
An overview on the different ways Janus can interact with endpoints dealing with plain RTP, whether it's for receiving and sending media, and thus allow Janus to act as a WebRTC "enabler" for non-WebRTC infrastructures,
Scaling WebRTC deployments with multicast @ IETF 110 MBONEDLorenzo Miniero
An overview of how multicast can be used to scale WebRTC deployments, with focus on the Virtual Event Platform used to provide remote participation support to IETF meetings, given during the MBONED WG session at IETF 110.
Slides for the presentation I did remotely at Open Source World, to talk about audio-only WebRTC applications, and what we've done in Janus to improve and cover the requirements so far.
These are the slides for the presentation I shared at the virtual edition of IIT-RTC 2022. I talked about how cascading/scalability worked with Janus 0.x, and what steps we've taken to do the same for 1.x (multistream) as well. In particular, the focus is on the new integrated cascading support in the VideoRoom plugin.
These are the slides of my talk WebKit and GStreamer of the GStreamer Conference on 2013, cohosted with LinuxCon.
The HTML5 version with its effects can be found at http://people.igalia.com/xrcalvar/talks/20131022-GstConf-WebKit
This is the slide deck I presented at the first CommCon event in the UK: it goes through some of the possible strategies for scaling WebRTC applications, mostly if you're using Janus but not only.
My (quite boring) slides on what we needed to do in Janus to support multiple streams of the same type (e.g., 3 video streams) on the same PeerConnection.
An overview on the different ways Janus can interact with endpoints dealing with plain RTP, whether it's for receiving and sending media, and thus allow Janus to act as a WebRTC "enabler" for non-WebRTC infrastructures,
Scaling WebRTC deployments with multicast @ IETF 110 MBONEDLorenzo Miniero
An overview of how multicast can be used to scale WebRTC deployments, with focus on the Virtual Event Platform used to provide remote participation support to IETF meetings, given during the MBONED WG session at IETF 110.
Slides for the presentation I did remotely at Open Source World, to talk about audio-only WebRTC applications, and what we've done in Janus to improve and cover the requirements so far.
These are the slides for the presentation I shared at the virtual edition of IIT-RTC 2022. I talked about how cascading/scalability worked with Janus 0.x, and what steps we've taken to do the same for 1.x (multistream) as well. In particular, the focus is on the new integrated cascading support in the VideoRoom plugin.
These are the slides of my talk WebKit and GStreamer of the GStreamer Conference on 2013, cohosted with LinuxCon.
The HTML5 version with its effects can be found at http://people.igalia.com/xrcalvar/talks/20131022-GstConf-WebKit
This is the slide deck I presented at the first CommCon event in the UK: it goes through some of the possible strategies for scaling WebRTC applications, mostly if you're using Janus but not only.
The challenges of hybrid meetings @ CommCon 2023Lorenzo Miniero
Slides for "The challenges of hybrid meetings" presentation I made at CommCon 2023. It covers how we provided remote participation services to live events before the pandemic, how we had to refactor everything for virtual only events, and what had to be changed again to accomodate audiences that may be evenly split between local and remote participants, with IETF meetings as a practical test case.
Slides for the 90 minutes workshop I presented at the RTC2019 event in Beijing. The many slides cover different aspects in Janus, ranging from configuration, to plugins, how to write your own plugin, core features, recording, monitoring, and so on.
Slides for the "Bandwidth Estimation in the Janus WebRTC Server" presentation I made at the new RTC.ON event in Krakow. It covers my journey in BWE, starting from the existing options, up to the decision to start from scratch and create a new approach to create a Janus-based testbed for simulcast subscribers.
An SFU/MCU integration for heterogeneous environmentsGiacomo Vacca
Janus and FreeSWITCH are two open source real-time communications projects that can be used to build conferencing systems.
Among other things, Janus implements an SFU (Selective Forwarding Unit).
FreeSWITCH includes a conference module, which works as MCU (Multipoint Control Unit).
Often we are asked to build solutions integrating existing applications and services: this presentation shows an approach and example.
Slides for the presentation on how you can get SFUs and MCUs to actually be friends, which I presented at the virtual edition of IIT-RTC 2020. The slides cover some of the pros and cons of both, and some use cases where you may actually want to use both. At the end, a few words are spent on how to use browsers as an MCU instead, which might make them being used with SFUs even easier.
High-Performance Networking Using eBPF, XDP, and io_uringScyllaDB
In the networking world there are a number of ways to increase performance over naive use of basic Berkeley sockets. These techniques have ranged from polling blocking sockets, non-blocking sockets controlled by Epoll, all the way through completely bypassing the Linux kernel for maximum network performance where you talk directly to the network interface card by using something like DPDK or Netmap. All these tools have their place, and generally occupy a space from convenience to performance. But in recent years, that landscape has changed massively.. The tools available to the average Linux systems developer have improved from the creation of io_uring, to the expansion of bpf from a simple filtering language to a full-on programming environment embedded directly in the kernel. Along with that came something called XDP (express datapath). This was Linux kernel's answer to kernel-bypass networking. AF_XDP is the new socket type created by this feature, and generally works very similarly to something like DPDK. History lessons out of the way, this talk will look into, and discuss the merits of this technology, it's place in the broader ecosystem and how it can be used to attain the highest level of performance possible. This talk will dive into crucial details, such as how AF_XDP works, how it can be integrated into a larger system and finally more advanced topics such as request sharding/load balancing. There will be detailed look at the design of AF_XDP, the eBpf code used, as well as the userspace code required to drive it all. It will also include performance numbers from this setup compared to regular kernel networking. And most importantly how to put all this together to handle as much data as possible on a single modern multi-core system.
It is an introduction to the Native Hook mechanism, which is a function hook mechanism in Android. It is implemented in Bionic linker, which is the dynamic linker in Android. With Native Hook mechanism enabled, you can hook any native function with another one, without any modification to the existing libraries.
Back in 2015, Square and Google collaborated to launch gRPC, an open source RPC framework backed by protocol buffers and HTTP/2, based on real-world experiences operating microservices at scale. If you build microservices, you will be interested in gRPC.
This webcast covers:
- a technical overview of gRPC
- use cases and applicability in your stack
- a deep dive into the practicalities of operationalizing gRPC
Slides for the talk I made at the virtual edition of FOSDEM 2022, on how to use WHIP for WebRTC broadcasting ingestion, and how the distribution process could be done via WebRTC as well, e.g., via Janus (and the SOLEIL architecture).
SIP transfer with Janus/WebRTC @ OpenSIPS 2022Lorenzo Miniero
These are the slides I presented at the OpenSIPS Summit 2022, where I talked about support for SIP call transfer and multiple lines in Janus, to make those features available to SIP-unaware WebRTC endpoints easily. The presentation also included a few details on a practical interaction with OpenSIPS instances.
WebRTC is an exciting new technology that lets you easily add realtime communication capabilities to your web and native apps. Learn more about WebRTC in this presentation from the real-life practitioners at Gruveo (www.gruveo.com).
Slides for the "WebRTC broadcasting: standardization, challenges and opportunities" presentation I made at TADSummit 2023 in Paris. It presents the problems traditional broadcasting has with new scenarios that would benefit from a much lower latency solution, and how WebRTC can help. It also introduces the standard WHIP and WHEP protocols for ingestion and egress, with a few details on how a WebRTC stream could be scaled to a very wide audience using something like SOLEIL (Streaming Of Large scale Events over Internet cLouds).
This is an introduction on Janus and its WebRTC features to the ClueCon audience, with a few words on how it can be used to complement FreeSwitch in some interesting scenarios.
The challenges of hybrid meetings @ CommCon 2023Lorenzo Miniero
Slides for "The challenges of hybrid meetings" presentation I made at CommCon 2023. It covers how we provided remote participation services to live events before the pandemic, how we had to refactor everything for virtual only events, and what had to be changed again to accomodate audiences that may be evenly split between local and remote participants, with IETF meetings as a practical test case.
Slides for the 90 minutes workshop I presented at the RTC2019 event in Beijing. The many slides cover different aspects in Janus, ranging from configuration, to plugins, how to write your own plugin, core features, recording, monitoring, and so on.
Slides for the "Bandwidth Estimation in the Janus WebRTC Server" presentation I made at the new RTC.ON event in Krakow. It covers my journey in BWE, starting from the existing options, up to the decision to start from scratch and create a new approach to create a Janus-based testbed for simulcast subscribers.
An SFU/MCU integration for heterogeneous environmentsGiacomo Vacca
Janus and FreeSWITCH are two open source real-time communications projects that can be used to build conferencing systems.
Among other things, Janus implements an SFU (Selective Forwarding Unit).
FreeSWITCH includes a conference module, which works as MCU (Multipoint Control Unit).
Often we are asked to build solutions integrating existing applications and services: this presentation shows an approach and example.
Slides for the presentation on how you can get SFUs and MCUs to actually be friends, which I presented at the virtual edition of IIT-RTC 2020. The slides cover some of the pros and cons of both, and some use cases where you may actually want to use both. At the end, a few words are spent on how to use browsers as an MCU instead, which might make them being used with SFUs even easier.
High-Performance Networking Using eBPF, XDP, and io_uringScyllaDB
In the networking world there are a number of ways to increase performance over naive use of basic Berkeley sockets. These techniques have ranged from polling blocking sockets, non-blocking sockets controlled by Epoll, all the way through completely bypassing the Linux kernel for maximum network performance where you talk directly to the network interface card by using something like DPDK or Netmap. All these tools have their place, and generally occupy a space from convenience to performance. But in recent years, that landscape has changed massively.. The tools available to the average Linux systems developer have improved from the creation of io_uring, to the expansion of bpf from a simple filtering language to a full-on programming environment embedded directly in the kernel. Along with that came something called XDP (express datapath). This was Linux kernel's answer to kernel-bypass networking. AF_XDP is the new socket type created by this feature, and generally works very similarly to something like DPDK. History lessons out of the way, this talk will look into, and discuss the merits of this technology, it's place in the broader ecosystem and how it can be used to attain the highest level of performance possible. This talk will dive into crucial details, such as how AF_XDP works, how it can be integrated into a larger system and finally more advanced topics such as request sharding/load balancing. There will be detailed look at the design of AF_XDP, the eBpf code used, as well as the userspace code required to drive it all. It will also include performance numbers from this setup compared to regular kernel networking. And most importantly how to put all this together to handle as much data as possible on a single modern multi-core system.
It is an introduction to the Native Hook mechanism, which is a function hook mechanism in Android. It is implemented in Bionic linker, which is the dynamic linker in Android. With Native Hook mechanism enabled, you can hook any native function with another one, without any modification to the existing libraries.
Back in 2015, Square and Google collaborated to launch gRPC, an open source RPC framework backed by protocol buffers and HTTP/2, based on real-world experiences operating microservices at scale. If you build microservices, you will be interested in gRPC.
This webcast covers:
- a technical overview of gRPC
- use cases and applicability in your stack
- a deep dive into the practicalities of operationalizing gRPC
Slides for the talk I made at the virtual edition of FOSDEM 2022, on how to use WHIP for WebRTC broadcasting ingestion, and how the distribution process could be done via WebRTC as well, e.g., via Janus (and the SOLEIL architecture).
SIP transfer with Janus/WebRTC @ OpenSIPS 2022Lorenzo Miniero
These are the slides I presented at the OpenSIPS Summit 2022, where I talked about support for SIP call transfer and multiple lines in Janus, to make those features available to SIP-unaware WebRTC endpoints easily. The presentation also included a few details on a practical interaction with OpenSIPS instances.
WebRTC is an exciting new technology that lets you easily add realtime communication capabilities to your web and native apps. Learn more about WebRTC in this presentation from the real-life practitioners at Gruveo (www.gruveo.com).
Slides for the "WebRTC broadcasting: standardization, challenges and opportunities" presentation I made at TADSummit 2023 in Paris. It presents the problems traditional broadcasting has with new scenarios that would benefit from a much lower latency solution, and how WebRTC can help. It also introduces the standard WHIP and WHEP protocols for ingestion and egress, with a few details on how a WebRTC stream could be scaled to a very wide audience using something like SOLEIL (Streaming Of Large scale Events over Internet cLouds).
This is an introduction on Janus and its WebRTC features to the ClueCon audience, with a few words on how it can be used to complement FreeSwitch in some interesting scenarios.
These slides cover a workshop called "Having fun with Janus and WebRTC" at the virtual edition of OpenSIPS 2021. The workshop guided viewers to how they could use different features in Janus to build a WebRTC Social TV application, including how to write a new plugin in JavaScript to build a virtual remote.
Just a few slides to talk about the first efforts on JamRTC, a native application based on GStreamer to do live jam sessions using WebRTC and Janus as an SFU. Mostly an overview of the initial architecture, with questions at the end to figure out if the approach is right or not, how to minimize latency, etc.
Slides for the talk I made at IIT-RTC 2021 about WHIP (WebRTC-HTTP ingestion protocol) and how it can help foster adoption of WebRTC in traditional broadcasting tools. The slides also cover my open source implementations of WHIP server (based on Janus) and WHIP client (based on GStreamer), and interoperability tests with other implementations.
Slides for the presentation I made at ClueCon 21 on the experimental RED support in WebRTC, and how we've started tinkering with it in Janus. The presentation also addresses a more generic overview on audio features in WebRTC.
Put some Web in your RTC SIP infrastructure! A good intro and updates on the Janus SIP and NoSIP plugins, and when it makes sense to use them (e.g., for PSTN integration, contact centers, etc.), from a presentation made at the OpenSIPS Summit 2019 in Amsterdam.
My talk on the excellent work Alessandro Toppi did at Meetecho on investigating the different code fuzzing options, and how it was eventually integrated in Janus for improving the robustness of the WebRTC stack (RTP, RTCP and SDP currently). It includes considerations on sharing corpora files and making this all distributed via OSS-Fuzz.
This is the presentation I made at Astricon on how to use Janus and Asterisk together for WebRTC applications. It focuses on the reasons why it might make sense to have Janus as a frontend to Asterisk, rather than let Asterisk handle WebRTC by itself, with real examples of applications doing this.
Slides for the 60 minutes "part 2" Janus workshop I presented at the virtual edition of ClueCon 2021. This time the slides covered Janus ability to bridge WebRTC and non-WebRTC applications to do interesting things, especially with the help of plain RTP and RTP forwarders. Check the conference recordings to see the actual demos in action.
The slides for the "Fuzzing Janus for fun and profit" paper I presented at IPTComm 2019, in Chicago. Simon (Romano) came up with the title, as a homage to the famous "Smashing the stack for fun and profit" article.
Slides I presented at the RTC2017 event in Beijing. May be mostly familiar with those who have seen my other Janus slides, but has some more content, and new examples.
WebRTC for Telco: Informa's WebRTC Global Summit PreconferenceTsahi Levent-levi
The preconference workshop I did at Informa's WebRTC Global Summit in London, 31st of March 2014
It is targeted at bringing people up to speed with what WebRTC is, how people and vendors are using it today and placing it also in the context of the telecom world (which is the focus of this specific conference).
Tsahi, is gonna make sure you've all got the basic fundamentals of WebRTC under your belt. It's a 101 tutorial, it's a baseline, may have heard it before but we want no one left behind. Already an expert? Then consider this a 20 minute nap time!
In this session, we cover the basics of what WebRTC is, what network components participate in a WebRTC service and where to find the right resources to learn more about WebRTC.
WebRTC and SIP not just audio and video @ OpenSIPS 2024Lorenzo Miniero
Slides for my "WebRTC-to-SIP and back: it's not all about audio and video" presentation at the OpenSIPS Summit 2024.
They describe my prototype efforts to add gatewaying support for a few SIP application protocols (T.140 for real-time text and MSRP) to Janus via data channels, with the related implementation challenges and the interesting opportunities they open.
Slides for my "Am I sober or am I trunk? A Janus story" presentation at Kamailio World 2024.
They describe my prototype efforts to add an option to create a trunk between a Janus instance and a SIP server, with the related implementation challenges and the interesting opportunities it opens.
Getting AV1/SVC to work in the Janus WebRTC ServerLorenzo Miniero
Slides for the "Getting AV1/SVC to work in the Janus WebRTC Server" presentation I made at the Real-Time Communications devroom of FOSDEM 2024 in Brussels. It describes in detail how AV1 is used in real-time communications (e.g., RTP packetization rules) and how the Dependency Descriptor extensions allows for SVC to be used in a server, by sharing my experience integrating it in the Janus WebRTC Server.
Real-Time Text and WebRTC @ Kamailio World 2023Lorenzo Miniero
Slides for my "Bringing real-time text to WebRTC for NG Emergency Services" presentation at Kamailio World 2023.
They describe my prototype efforts to get SIP-based T.140 Real-Time Text to work with WebRTC endpoints via data channels, thanks to Janus acting as a gateway for the purpose.
Slides I presented in the Open Media devroom at FOSDEM 2023, where I gave an intro on how to capture, record and produce music using just open source software on Linux. It's a very high level overview on available software to do different things, and how they can be used together using JACK and/or Pipewire.
Virtual IETF meetings with WebRTC @ IETF 109 MOPSLorenzo Miniero
An overview of how the Janus WebRTC Server was used to serve virtual IETF meetings at scale, with focus on how audio and video streams were handled in different ways, given during the MOPS WG session at IETF 109. Some considerations on some specific enhancements made between IETF 108 and 109 are provided as well.
Slides for the presentation on Insertable Streams and E2EE in WebRTC I presented at the virtual edition of ClueCon 2020. After an introduction on the past and recent E2EE efforts, the slides also present some efforts to integrate the technology in the Janus WebRTC server as well.
Slides for the 60 minutes workshop I presented at the virtual edition of ClueCon 2020 (ClueCon Deconstructed). The many slides cover different aspects in Janus, ranging from configuration, to plugins, how to write your own plugin, core features, recording, monitoring, and so on. Unfortunately I didn't have enough time to talk about everything, but slides should be easy to follow anyway.
Slides for the "Turning live events to virtual with Janus" talk I presented at the Virtual CommCon 2020 edition. It covers how we streamed live events in the past, and how we had to shift to a completely virtual approach because of the troubling times we live in.
Welcome to JanusCon! -- Past, Present and Future of JanusLorenzo Miniero
The slides for my "Welcome" presentation at JanusCon '19, with an overview on the history of Janus (how it changed in this first five years) and on some possible future directions for the project. Unfortunately, my talk was not recorded, so some slides may look a bit "cryptic" without some vocal context.
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualityInflectra
In this insightful webinar, Inflectra explores how artificial intelligence (AI) is transforming software development and testing. Discover how AI-powered tools are revolutionizing every stage of the software development lifecycle (SDLC), from design and prototyping to testing, deployment, and monitoring.
Learn about:
• The Future of Testing: How AI is shifting testing towards verification, analysis, and higher-level skills, while reducing repetitive tasks.
• Test Automation: How AI-powered test case generation, optimization, and self-healing tests are making testing more efficient and effective.
• Visual Testing: Explore the emerging capabilities of AI in visual testing and how it's set to revolutionize UI verification.
• Inflectra's AI Solutions: See demonstrations of Inflectra's cutting-edge AI tools like the ChatGPT plugin and Azure Open AI platform, designed to streamline your testing process.
Whether you're a developer, tester, or QA professional, this webinar will give you valuable insights into how AI is shaping the future of software delivery.
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
Generating a custom Ruby SDK for your web service or Rails API using Smithyg2nightmarescribd
Have you ever wanted a Ruby client API to communicate with your web service? Smithy is a protocol-agnostic language for defining services and SDKs. Smithy Ruby is an implementation of Smithy that generates a Ruby SDK using a Smithy model. In this talk, we will explore Smithy and Smithy Ruby to learn how to generate custom feature-rich SDKs that can communicate with any web service, such as a Rails JSON API.
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
1. SFU’s, Simulcast and SVC
What’s new in WebRTC?
Lorenzo Miniero
@elminiero
IIT Real-Time Communication 2019 – WebRTC Track
October 15th 2019, Chicago, IL, USA
2. A few words about me
Lorenzo Miniero
• Ph.D @ UniNA
• Chairman @ Meetecho
• Main author of Janus®
Contacts and info
• lorenzo@meetecho.com
• https://twitter.com/elminiero
• https://www.slideshare.net/LorenzoMiniero
6. Simulcast in a nutshell
https://webrtchacks.com/sfu-simulcast/
7. SVC as a different way to encode multiple tracks
https://webrtchacks.com/chrome-vp9-svc/
8. Simulcast vs. SVC
• Simulcast
• Same source, same m-line
• Streams of different “quality” are separate tracks
• Each track is a different SSRC
• Each track can be decoded indepedently from others
• SVC
• Same source, same m-line
• Streams of different “quality” are layers of the same “thing”
• All tracks share the same SSRC (since they’re layers)
• Each track depends on the previous to be decoded
• Less bandwidth, but more CPU intensive
Fun fact – Simulcast in browsers also enables temporal scalability
Allows to drop to lower framerate without sacrificing quality
9. Simulcast vs. SVC
• Simulcast
• Same source, same m-line
• Streams of different “quality” are separate tracks
• Each track is a different SSRC
• Each track can be decoded indepedently from others
• SVC
• Same source, same m-line
• Streams of different “quality” are layers of the same “thing”
• All tracks share the same SSRC (since they’re layers)
• Each track depends on the previous to be decoded
• Less bandwidth, but more CPU intensive
Fun fact – Simulcast in browsers also enables temporal scalability
Allows to drop to lower framerate without sacrificing quality
10. Simulcast vs. SVC
• Simulcast
• Same source, same m-line
• Streams of different “quality” are separate tracks
• Each track is a different SSRC
• Each track can be decoded indepedently from others
• SVC
• Same source, same m-line
• Streams of different “quality” are layers of the same “thing”
• All tracks share the same SSRC (since they’re layers)
• Each track depends on the previous to be decoded
• Less bandwidth, but more CPU intensive
Fun fact – Simulcast in browsers also enables temporal scalability
Allows to drop to lower framerate without sacrificing quality
11. Both only make sense with an SFU on the path
• Browsers can’t negotiate receiving part of simulcast
• ... unless you’re Philipp Hancke’s browser!
• https://webrtchacks.com/a-playground-for-simulcast-without-an-sfu/
• It wouldn’t make much sense anyway!
• Why receive all “versions” when you only need one?
• Job for a Selective Forwarding Unit!
• Pretty much all SFU’s support simulcast today
• Janus (wink wink! )
• Jitsi
• mediasoup
• Medooze
• ...
• Most support some flavour of SVC as well (more on that later)
12. Both only make sense with an SFU on the path
• Browsers can’t negotiate receiving part of simulcast
• ... unless you’re Philipp Hancke’s browser!
• https://webrtchacks.com/a-playground-for-simulcast-without-an-sfu/
• It wouldn’t make much sense anyway!
• Why receive all “versions” when you only need one?
• Job for a Selective Forwarding Unit!
• Pretty much all SFU’s support simulcast today
• Janus (wink wink! )
• Jitsi
• mediasoup
• Medooze
• ...
• Most support some flavour of SVC as well (more on that later)
13. Both only make sense with an SFU on the path
• Browsers can’t negotiate receiving part of simulcast
• ... unless you’re Philipp Hancke’s browser!
• https://webrtchacks.com/a-playground-for-simulcast-without-an-sfu/
• It wouldn’t make much sense anyway!
• Why receive all “versions” when you only need one?
• Job for a Selective Forwarding Unit!
• Pretty much all SFU’s support simulcast today
• Janus (wink wink! )
• Jitsi
• mediasoup
• Medooze
• ...
• Most support some flavour of SVC as well (more on that later)
14. Both only make sense with an SFU on the path
• Browsers can’t negotiate receiving part of simulcast
• ... unless you’re Philipp Hancke’s browser!
• https://webrtchacks.com/a-playground-for-simulcast-without-an-sfu/
• It wouldn’t make much sense anyway!
• Why receive all “versions” when you only need one?
• Job for a Selective Forwarding Unit!
• Pretty much all SFU’s support simulcast today
• Janus (wink wink! )
• Jitsi
• mediasoup
• Medooze
• ...
• Most support some flavour of SVC as well (more on that later)
15. Both only make sense with an SFU on the path
• Browsers can’t negotiate receiving part of simulcast
• ... unless you’re Philipp Hancke’s browser!
• https://webrtchacks.com/a-playground-for-simulcast-without-an-sfu/
• It wouldn’t make much sense anyway!
• Why receive all “versions” when you only need one?
• Job for a Selective Forwarding Unit!
• Pretty much all SFU’s support simulcast today
• Janus (wink wink! )
• Jitsi
• mediasoup
• Medooze
• ...
• Most support some flavour of SVC as well (more on that later)
16. Tackling simulcast at the IETF 104 hackathon
https://trac.ietf.org/trac/ietf/meeting/wiki/104hackathon/webrtc
32. Why remove the SSRC from the SDP?
• Many implementations rely on the SSRC for demultiplexing
• RTP/RTCP from multiple streams all muxed together
• SSRC used to recognize one stream from another
• Missing SSRCs break most of those applications
• Chrome’s perspective: the problem of mapping “rid” to “ssrc”
• Both are in the SDP, but how are they mapped?
• Order-based just a convention, and at the time not specified anywhere
• https://tools.ietf.org/html/draft-alvestrand-mmusic-simulcast-ssrc-00
Solution: parse rid RTP extension on the recipient side
• SSRC in related packet allows for specific rid↔ssrc association
• Once you know the SSRC, keep on multiplexing on that
33. Why remove the SSRC from the SDP?
• Many implementations rely on the SSRC for demultiplexing
• RTP/RTCP from multiple streams all muxed together
• SSRC used to recognize one stream from another
• Missing SSRCs break most of those applications
• Chrome’s perspective: the problem of mapping “rid” to “ssrc”
• Both are in the SDP, but how are they mapped?
• Order-based just a convention, and at the time not specified anywhere
• https://tools.ietf.org/html/draft-alvestrand-mmusic-simulcast-ssrc-00
Solution: parse rid RTP extension on the recipient side
• SSRC in related packet allows for specific rid↔ssrc association
• Once you know the SSRC, keep on multiplexing on that
34. Why remove the SSRC from the SDP?
• Many implementations rely on the SSRC for demultiplexing
• RTP/RTCP from multiple streams all muxed together
• SSRC used to recognize one stream from another
• Missing SSRCs break most of those applications
• Chrome’s perspective: the problem of mapping “rid” to “ssrc”
• Both are in the SDP, but how are they mapped?
• Order-based just a convention, and at the time not specified anywhere
• https://tools.ietf.org/html/draft-alvestrand-mmusic-simulcast-ssrc-00
Solution: parse rid RTP extension on the recipient side
• SSRC in related packet allows for specific rid↔ssrc association
• Once you know the SSRC, keep on multiplexing on that
39. Currently only available in Chrome, and behind a flag
/opt/google/chrome/google-chrome
--user-data-dir=/home/user/customprofile
--no-first-run
--force-fieldtrials=
WebRTC-SupportVP9SVC/EnabledByFlag_2SL3TL/
40. Testing VP9 SVC in Chrome
https://www.meetecho.com/blog/vp9-svc-in-janus-meetecho-cosmo/
41. AV1 is coming! (and SVC is mandated)
https://aomediacodec.github.io/av1-spec/
