# Reply LS to CTA WAVE on CMCD Phase 2

## Document Information

**Meeting:** 3GPP TSG-SA4 Meeting #135 (S4-260033)  
**Date:** 9-13 February 2026, Goa, India  
**Response to:** S4-251997  
**Release:** Rel-20  
**Work Item:** FS_AMD_Ph2, AMD_PRO-MED  
**Source:** CTA WAVE  
**To:** 3GPP TSG SA WG4  
**Cc:** SVTA DASH-IF WG, ISO/IEC JTC1 SC29 WG03 (MPEG Systems)  
**Contact:** Will Law (wilaw@akamai.com)

## Overview

This is a Liaison Statement (LS) from CTA WAVE to 3GPP SA4 regarding CMCD (Common Media Client Data) Phase 2 development. The document serves as a reply to a previous LS (S4-251997).

## Key Technical Contributions

### CMCD Version 2 Status

The LS indicates that CTA WAVE has provided an **email received** and a **CMCDv2 Release Candidate** as attachments to this liaison statement.

### Coordination Activities

This liaison represents ongoing coordination between:
- **CTA WAVE** (Consumer Technology Association Web Application Video Ecosystem)
- **3GPP SA4** (Service and System Aspects Working Group 4 - Codec and Media)
- **SVTA DASH-IF WG** (Streaming Video Technology Alliance - DASH Industry Forum Working Group)
- **ISO/IEC JTC1 SC29 WG03** (MPEG Systems)

### Work Item Context

The LS is associated with two work items:
- **FS_AMD_Ph2:** Feasibility Study on Adaptive Media Delivery Phase 2
- **AMD_PRO-MED:** Adaptive Media Delivery for Professional Media

## Purpose

This reply LS appears to be providing 3GPP SA4 with the latest CMCDv2 Release Candidate documentation for review and consideration in the context of the ongoing Adaptive Media Delivery Phase 2 work and Professional Media activities in Release 20.