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0 pointsbsder5y ago0 comments

I was being kind and lumping AES67 in with TSN/AVB (time-sensitive networking/audio-video bridging).

If I'm being snarky, AES67 is a last ditch effort by the proprietary vendors to remain relevant before AVB/TSN wipes them out.

Before Covid, it seemed like Presonus was wiring up every new church I knew of with AVB/TSN.

> This isn't how you connect something trivial like an LCD to your speakers

Automotive companies do not regard that as trivial. Copper is heavy and expensive and difficult to route. LCDs are in the ceiling and speakers are in the floor. The only common point is at the (literal, in this case) firewall.

Collapsing everything to a few pairs of Ethernet is a big deal for them.

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lukeh5y ago

AVB/TSN has a lot of great things about it but it's a market failure outside of proprietary audio systems (e.g. Avid, Presonus) and the automative world. The fact that it requires not just the endpoints (which themselves require an Ethernet chipset with multiple send/receive queues and hardware time stamping) but all network switches to support 802.1AS, MSRP, MVRP, etc creates a stalemate between vendors (waiting for a deployed base) and customers (waiting for market availability).

My personal opinion is that AES67 will eventually win. Dante has the installed base for now, and it can operate in an AES67 interoperability mode (albeit with quite a few limitations). SMPTE 2110-30 is essentially AES67. AES/TSN will limp along within homogeneous networks with Dante/AES67 at the edges where interoperability is required.

Don't get me wrong, I like AVB (see other post about AES67/AVB bridge), even though it has some quirks, e.g. the relationship between PTP and media clocks is a lot more straightforward in AES67.

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lukeh5y ago

Don't get me wrong, I like AVB (see other post about AES67/AVB bridge), even though it has some quirks, e.g. the relationship between PTP and media clocks is a lot more straightforward in AES67.

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