What's the state of mpeg-ts support? Or is there some other fixed block size, streamable container I can push over a network without having to think about block

What's the state of mpeg-ts support? Or is there some other fixed block size, streamable container I can push over a network without having to think about block boundaries or stream negotiation or formats or metadata? With mp4 and TS it's almost trivial to get subsecond latency on a websocket, I hope AV1 has something like it.