This does not work with OBS

We use 224.0.0.1:5004

srtsink blocks, so we need a leaky queue, but 200 buffers wasn't enough
leading to constantly broken stream.

This fix the bus-id and add a hack to reduce the latency.

We will make a gst-build fork instead as this is hard to manage now that
we have multiple repo.

Because it's newer but also more accurate on segment split.

This adds tsparse and tsdemux sharing and globally reconfigure the
pipeline so it better performs.

I had to debug a not link issue while reworking the pipeline.

It was calling the error parser which would assert and abort.

This allow the source to be on separate computer.

There is autoplay policy in recent browser that cause both HLS and
WebRTC to be in pause when page is loaded. Autoplay will work if the
demo was started by a user interaction, we may consider this later
instead, but for now having the controls to press play works.

I was testing with my laptop and not using VAAPI was making everything
unusable.

That reduces the risk of spurious build errors.

Instead use the add-transceiver API and only connect to the rest of the bin
when the connection is established.