The statement is correct. A hybrid multistream conference, a feature enabled by modern Multipoint Control Units (MCUs) like the Huawei CloudMCU, is specifically designed to facilitate interoperability between newer SVC (Scalable Video Coding) endpoints and legacy AVC (Advanced Video Coding) endpoints.

To ensure a seamless and consistent experience for all participants, especially the AVC endpoints which can only process a single, pre-composed video stream from the MCU, the system defaults to a continuous presence layout. In this mode, the MCU receives streams from all participants, decodes them, creates a composite video image (a tiled layout showing multiple participants), and then re-encodes this single composite stream to be sent out. This is the standard operational model for a traditional AVC conference, and it is maintained as the default in a hybrid conference to guarantee that AVC endpoints can participate fully.

This is a "TRUE OR FALSE" question, so there is no incorrect option to evaluate. The statement is factually correct based on the principles of AVC/SVC interoperability in Huawei's video conferencing architecture. A "False" answer would incorrectly imply that either SVC and AVC endpoints cannot join the same conference or that the default experience is not continuous presence, both of which contradict the design of hybrid conference modes.

1. Huawei HCIP-Video Conference V4.0 Training Material. In the module covering Huawei's CloudMCU

the section on conference types explains the "Universal Transcoding Conference" model. It details that this mode allows both AVC and SVC terminals to join. To ensure compatibility

the CloudMCU generates a composite picture (continuous presence) and sends it to the AVC terminals. This same composite view is provided as the default experience for all participants to maintain consistency. (Refer to: HCIP-Video Conference V4.0 Training Material

Chapter: Huawei Video Conferencing Solution and Product Introduction

Section: CloudMCU Key Technologies).

2. Huawei CloudMCU Product Documentation. The official product documentation for the Huawei CloudMCU describes its conference scheduling and management features. It specifies that in a hybrid conference involving both H.264 AVC and H.264 SVC endpoints

the CloudMCU performs the necessary transcoding and mixing to create a continuous presence layout

which is the expected behavior for AVC-based systems. (Refer to: Huawei CloudMCU V600R019C10 Product Documentation

Feature Guide

Section: Conference Management > Universal Transcoding Conference).