media-factory-uri: payload mpeg-ts streams directly

Submitted by Thibault Saunier @thiblahute

Link to original bug (#670255)

Description

Created attachment 207823
Fixes the issue, making it possible to send muxed streams in payloads

Currently instead of using the mpeg-ts payloader (rtpmp2tpay) to send the streams payloaded inside an mpeg-ts container, we demux it and send the various streams payloaded separately. We could just payload them as is inside the mpeg-ts container.

This is also true for other container types that could be used directly as payloads.

I am not really sure what the advantages of this behavior are in comparison with the current one but the described behavior makes more sense to me. Also we might want to let the user control this behavior?

Patch 207823, "Fixes the issue, making it possible to send muxed streams in payloads":
0001-media-factory-uri-Use-muxed-streams-as-payload-when-.patch