Technical Content

The ATEM series is Blackmagic Design's line of live production switchers, covering scenarios ranging from personal live streaming to large-scale broadcast productions. The following is a categorized technical breakdown.

Ben Ratner Emmy Award-Winning Director/Producer, specializing at the intersection of content, technology and distribution.

2025-10-13: Document No. 65 [2025] from the State Administration of Radio and Television

The National Radio and Television Administration has organized the review of the standard document "Technical Requirements and Measurement Methods for Broadcast-Level Ultra High Definition Cameras," which is now approved as a recommended industry standard for radio, television, and online audiovisual services in the People's Republic of China and is hereby published.

To address the confusion and operational complexities faced by users due to the broadcasting of ultra-high-definition channels in 2025 by Beijing, Guangdong, and eight other provinces, where the same channel is available in different technical formats (ultra-high-definition, high-definition, standard-definition) occupying multiple channel numbers, the National Radio and Television Administration released the "Technical Implementation Guide for Unified Channel Numbering of Cable Television (2025 Edition)" in November 2025.

On September 6, 2024, a letter regarding the high-definition trial broadcast of "China Weather" and the cessation of the standard-definition channel was revealed.

Harmonic ProStream X is a software-based audio and video stream processing and gateway product. It provides top-tier high-performance stream processing primarily for transmission applications such as broadcasting, cable, satellite, terrestrial, IPTV, and OTT. Benefiting from various advanced video processing features, it offers essential functionalities including multiplexing, scrambling, splicing, and power failover. It has a wide market share in critical transmission and broadcasting fields, with many users praising its stability and ease of use.

1. Comparison of SRT and NDI Low Latency Transmission Protocols:

About SRT:
SRT is an internet transport protocol co-created by Haivision and Wowza, and it is currently a very popular open-source low-latency video transmission protocol. By using SRT transmission technology, it successfully enables secure and reliable high-definition video transmission and distribution over ordinary internet environments across multiple locations. It is now widely used in embedded live streaming devices, especially in broadcasting-related products!

Real-Time Messaging Protocol (RTMP)) is a communication protocol for streaming audio, video, and data.over internet.

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