In early 2020, when the pandemic just was kicking off, DASH-IF replaced its f2f meetings with a series of Special Sessions. This was setup in order to provide a platform for DASH-IF members and external companies to present new ideas. DASH-IF typically invites colleagues from other organizations such as MPEG, 3GPP, DVB, SCTE, CTA WAVE or ATSC. This makes these presentations lively and interesting and we have identified relevant new topics for which some of them have been moved into work streams. If you are interested to give a presentation as well, please contact us.

Special Sessions 2024

April 5, 2024: MPEG-DASH 6th Edition Features


Editors of 6th Edition


MPEG is in the process of defining the 6th edition of MPEG-DASH. The updates address industry needs from MPEG-DASH deployments. Among others the following features are presented in more details.


About 40 experts from different organizations such as DASH-IF, DVB TM-STREAM, ATSC TG3-6, 3GPP SA4 MBS, CTA WAVE TWG, 5G-MAG RT & CD-T particicatped in the meeting. If you have feedback, please contact the DASH-IF IOP chair.

Recording, Slides and other Material:

Special Sessions 2023

December 1, 2023: Media Over QUIC (MOQ)



This talk is an introduction to Media over QUIC (MoQ). We’ll examine why a new protocol is needed to leverage the benefits of QUIC, what is motivating the switch to pub/sub, the architectural layering of MoQ Transport and Streaming Formats, and a brief look at catalogs and the MoQT Object model. We’ll conclude with demonstrations of MoQ implementations and a view into the current development schedule.


Experts from different organizations such as DASH-IF, DVB TM-STREAM, ATSC TG3-6, 3GPP SA4 MBS, CTA WAVE TWG, 5G-MAG RT & CD-T were invited to the meeting. Over more than 100 people participated. Thank you!

Recording, Slides and other Material (to be completed):

March 10, 2023: DASH-IF Open Source and Reference Tools - Breaking News on Live-Sim and dash.js



The DASH-IF Live Simulator (livesim) is a mature tool focused on providing configurable live streams to test timing, MPD variants, multiple periods, and a lot of other features. Its sources are DASH VoD assets from which “live” segments are generated on request to simulate a wall-clock synchronized looped source. It has been extended to produce low-latency DASH, but is hard to extend further, and is thereby limited in what content it can use. It can, for example, not output 29.97frames/s or segment durations which are not integral seconds in average. DASH-IF is running a public test server on AWS, but the traffic costs have been quite high. The current livesim has been instrumental for both implementing and testing timing live stream timings for both dash.js and other players, and some streams from the public DASH-IF site are included in the standard test suite. Livesim2 is a new implementation, written from scratch in Go. It is much easier to deploy and can handle much more content. A configurable traffic limiter that can limit traffic per IP-address/24h should provide useful to reduce traffic costs for a public server. The livesim2 GitHub repo will be become a public GitHub repo before the meeting. With livesim2 being a new project, it lacks many features compared to livesim, but also makes it possible to implement new scenarios and test cases. At this event, we will demonstrate livesim2 but also start the discussion about what features to prioritize and implement, and the possibility for financial sponsoring to make this possible.

dash.js is a free, open-source MPEG-DASH player by the Dash Industry Forum (DASH-IF). dash.js serves as a reference client for DASH-IF and various other organizations to test and verify features related to DASH based media streaming. Moreover, dash.js is a prominent option for a production grade player and widely used in the academic field. In this presentation, we dive into dash.js development and the main features of the player. We focus on recent additions such as Common Media Client Data (CMCD), Common Media Server Data (CMSD), Content Steering, and segment preloading to enable broadcast-broadband ad-insertion on HbbTV terminals. Moreover, we discuss upcoming additions to dash.js and how to contribute to the project.


Experts from different organizations such as DASH-IF, DVB TM-STREAM, ATSC TG3-6, 3GPP SA4 MBS, CTA WAVE TWG, 5G-MAG RT & CD-T are invited to the meeting.

Recording, Slides and other Material:

February 10, 2023: DASH-IF A/B Watermarking



DASH-IF released a 2nd community review the “DASH-IF A/B Watermarking integration schema” guidelines. We received very constructive comments from the Industry and updated the specification where needed. Representatives from the companies involved in this work presented the problem we solve, an overview of the specifications focusing on the updates that have been made. A Proof-of-Concept was also be demonstrated.


Around 50 experts from different organizations such as DASH-IF, DVB TM-STREAM, ATSC TG3-6, 3GPP SA4 MBS, CTA WAVE TWG, 5G-MAG RT & CD-T attended the meeting.

Recording, Slides and other Material:

Special Sessions 2022

December 16, 2022: CMCD and CMSD – what, why and how?


Will Law (Akamai) - Bio:


This session dives in to both new CTA WAVE specifications - Common Media Client Data and Common Media Server Data. We examine the problems they are solving, the mechanisms by which data is transmitted and the use-cases that can be addressed by each, along with demonstrations of the standards in action.


More than 50 experts from invited organizations DASH-IF, DVB TM-STREAM, ATSC TG3-6, 3GPP SA4 MBS, CTA WAVE TWG, 5G-MAG RT & CD-T

Recording and Slides:

October 21, 2022: Ad slot signalling in DASH according to DVB and SCTE

June 5, 2022: Next Steps in ATSC and DASH

Overview and Background:

Presentation 1: Introduction to ROUTE RFC 9223

Presentation 2: ATSC ROUTE/DASH Introduction

Presentation 3: ROUTE/DASH/CMAF - Design options and opportunities

Presentation 4: LL-DASH over ROUTE: Implementation in GPAC

April 13, 2022: Watermarking

Special Sessions 2021

January 20, 2021

Presentation: Modern content replacement workflows based on SCTE Specifications

April 9, 2021

Presentation 1: Brief Overview on CTA-5004: Common Media Client Data (CMCD)

Presentation 2: Use of CMCD in HTTP Adaptive Streaming: Initial Findings

Presentation 3 LC-EVC - Principles and Application to Adaptive Streaming and the Web (part 1 V-Nova) (part 2 Streaming Media)

May 28, 2021: WebRTC-based Premium Streaming Ecosystem

Special Sessions 2020

May 22, 2020: DASH over SRT

June 5, 2020

Presentation 1: A advertising Working Group: Ad monitoring End to End

Presentation 2: A new approach to DRM

June 19, 2020

Presentation 1: Haptics Media in DASH

Presentation 2: 5G Media Streaming Status Update

July 17, 2020: Video HRD conformance and DASH

July 31, 2020

Presentation 1: An overview of the High Efficiency Streaming Protocol

Presentation 2: W3C DataCue API Introduction

August 14, 2020

Presentation: MPEG Network-Based Media Processing and 5G Media Edge Processing

September 11, 2020

Presentation: A primer to VVC with focus on High-Level Syntax

October 9, 2020

Presentation: Ingest Task Force with special session

November 20, 2020

Presentation: ISO/IEC 23009-8