Most USB cameras send JPEG frames because USB 2.0 isn't nearly enough to support raw frames: 60 frames/second * 1920*1080 pixels/frame * 4 bytes/pixel = ~475MiB/s, while maximum USB 2.0 bandwidth is ~60MiB/s. You also don't want to store raw frames on the cloud storage, your bill would skyrocket. Those are some of the reasons for using JPEG.

If you're using dockerized services (which are a must for NVidia-based CV, since their CV libraries are a dependency hell), you must use some kind of networking solution to communicate. RabbitMQ might be considered overkill, but it does the job and is robust.

It's not nice to talk that way about others' work, especially when your comment insults, but doesn't provide any insight whatsoever.