Application Notes: Dante in Corporate AV Installations
Boardrooms, conference rooms, campuses, lobbies — real-world deployment scenarios Corporate AV is among the most practical deployment target for…
AV over IP vs. Traditional Matrix Switching
Architecture, Scalability, Latency, Image Quality & Network Requirements
Executive Summary
AV distribution has reached an inflection point. For decades, integrators designed around fixed-configuration HDMI matrix switchers — deterministic, reliable, and well-understood. AV over IP presents a compelling alternative: scalable, software-defined, and built on standard network infrastructure. This guide provides a technical framework for evaluating both architectures across the dimensions that matter most in a real installation.
1. Architecture Overview
Traditional Matrix Switching
- Deterministic signal path — no network variables
- Zero-configuration routing once cabled
- Fixed I/O count at purchase — chassis replacement required to expand
- Single point of failure for the entire distribution system
AV over IP
- Many-to-many routing via network switching
- Scales by adding encoders, decoders, and switch ports — no chassis replacement
- Distance limited only by network infrastructure (100m copper / km via fiber)
- Requires a properly configured managed switch
2. Scalability
Scaling a traditional matrix is a hardware replacement decision. AV over IP scales linearly — adding a source or display requires one new endpoint and one switch port. Systems with hundreds of endpoints are routinely deployed on a single flat network.
Verdict: AV over IP wins decisively on scalability. For installations expected to grow, AV over IP eliminates the risk of outgrowing the matrix.
3. Latency
| Technology | Latency | Notes |
|---|---|---|
| Traditional HDMI Matrix | ~0ms | No encode/decode pipeline |
| SDVoE (10G) | ~0ms | Uncompressed, bit-perfect, frame-synchronous |
| JPEG2000 (1G) | ~1 frame (~16ms @ 60Hz) | Visually lossless, imperceptible in most applications |
| H.265 (1G) | 60–200ms typical | GOP-based — unacceptable for interactive use |
Verdict: Traditional matrix and SDVoE are equivalent at zero latency. JPEG2000 is acceptable for nearly all AV applications. H.265 is limited to passive signage.
4. Image Quality
| Technology | Compression | 4K60 4:4:4 | HDR |
|---|---|---|---|
| Traditional HDMI Matrix | None | Yes (HDMI 2.0) | Yes |
| SDVoE | None | Yes | Yes |
| JPEG2000 | Visually lossless | Yes | Yes |
| H.265 | Lossy | Yes | Limited |
JPEG2000 and SDVoE are indistinguishable from traditional matrix at normal viewing distances. H.265 introduces visible artifacts on high-motion 4K content.
5. Network Requirements
Traditional matrix requires no network configuration. AV over IP requires a managed switch with:
- IGMP snooping + querier — mandatory for JPEG2000/H.265 multicast. #1 cause of no-signal failures on first install.
- Jumbo frames (MTU 9000) — required for JPEG2000 and SDVoE; not required for H.265.
- Flow control disabled — IEEE 802.3x must be disabled on all AV ports.
- Dedicated VLAN — strongly recommended.
- 1G for JPEG2000/H.265; 10G for SDVoE.
Verdict: Traditional matrix wins on network simplicity. In environments with IT support, AV over IP network requirements are manageable. Without dedicated IT, traditional matrix reduces operational risk.
Continued in Part 2: Distance, Control, TCO & Decision Guide
