Difference between AES67 & ST 2110-30
In-depth analysis of the relationship and differences between two core audio network standards
Although AES67 and SMPTE ST 2110-30 are often mentioned together, and ST 2110-30 is defined based on AES67, there are significant differences in their application scenarios and technical details. Simply put, AES67 is a bridge connecting different AoIP islands; while ST 2110-30 is the audio component of the modern broadcast IP production standard.
Core Difference Comparison
| AES67 | ST 2110-30 | |
|---|---|---|
| Definition & Ownership | AES Standard, focused on audio interoperability | SMPTE Standard, part of ST 2110 video production suite |
| Application | Live sound, conferencing, fixed installation, broadcasting | TV broadcasting, OB vans, studio IP production |
| Stream Format | Flexible, supports multiple sample rates and packet times | Stricter, typically requires 48kHz, recommends 1ms or 125us packet time |
| Management | Typically uses SAP or mDNS/Bonjour for discovery | Relies on NMOS (IS-04/IS-05) for registration and discovery |
| Clock Sync | PTPv2 (IEEE 1588-2008) Media Profile | PTPv2 (SMPTE ST 2059-2) Profile, stricter jitter control |
Same Source, Different Streams
SMPTE ST 2110-30 directly references AES67 technical definitions. This means all ST 2110-30 streams are essentially AES67 streams. However, not all AES67 streams comply with ST 2110-30 standards. ST 2110-30 is like a curated subset from AES67 to ensure plug-and-play stability in complex broadcast systems.
System-Level Integration
AES67 mainly solves whether audio can pass through. ST 2110-30, as part of a larger family, focuses more on lip-sync with video and unified scheduling and management in large SDN networks.