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).