Streaming on risc os

Hi.

It is possible to streaming A/V on risco os ? On windows is cool program obs studio but i have a raspberry pi 3 and i want streaming on minicomputer and i looking for OS and program.

Sorry but RISC OS isn’t really suitable for that. AIUI there is very limited support for streamed sound and none for streamed Video.

You do realise you’re replying to a spammer, Chris? S/he/it hasn’t included a link, but the idea is to get us to look for the software mentioned.

I should probably include a “probably” or two in that, just in case, but meh.

Hmm, while spammers tend to try to make their posts look like comments (thank you that was very helpful blah blah), there is usually a link to something. According to Google, the phrase “On windows is cool program obs studio” only appears here…

If the person is really looking for setting up a streaming server on a Pi, why ask for “OS and program”? In fact, why ask here, when it gets faster results asking Google – searching for “pi 3 streaming server” found:

• A more powerful Plex media server using Raspberry Pi 3 – Element 14
• 5 façons de faire streaming vidéo avec un RaspberryPi
• 4 ways to Set Up Your Raspberry Pi as a Media Server – MakeUseOf
  and so on.

To expand upon what Chris wrote – most hardcore video applications need access to the GPU. This is provided in Linux using “binary blobs” that can interact at a low level with the GPU making HD video decoding effortless. Unfortunately RISC OS only really considers the GPU to be a framebuffer (like an old fashioned VGA card), it cannot do the low level stuff and the binary blobs don’t work on RISC OS. As such, video decoding must be done in software, and the processor in my Pi1 is about capable of decoding DivX 320×240 in realtime. It would be utterly infeasible to do H.264 at 720P without GPU assistance.
Maybe one day things will open up more, but since most manufacturers tend to consider their GPUs to be magical black boxes and defend-to-the-death intellectual secrets, video support on RISC OS has been traditionally weak…

…to the point where I wonder if it wouldn’t benefit us more to ignore the specifics of each GPU and instead try to find a way to load and use the Linux driver blobs?
Possible? Well, pUbuntu runs Ubuntu in Windows so such things are possible, but developer time is something in short supply. Plus, since it’s a doddle to swap SD cards and “just use RaspBMC” (or whatever it calls itself now – Kodi?), it isn’t going to be high up the list of priorities.

PS: The software mentioned looks, at a quick glance, like a legitimate open source project.

Vince: I’m gullible!

Vince: I’m gullible!

I’m sure you’ve heard that they’re planning to take that word out of the OED … Don’t ask me why!

I’m sure you’ve heard that they’re planning to take that word out of the OED … Don’t ask me why!

Ha Ha!

This is provided in Linux using “binary blobs”

Is there a possibility of spinning up a second core with a micro-linux to handle this, and get RISC OS to show an overlay window, passing details of the file and overlay window to the second core? (Knowing NOTHING about the intricate details of course) ;@)

Just blindly thinking…

and get RISC OS to show an overlay window

VNC style?

Is there a possibility of spinning up a second core with a micro-linux to handle this, and get RISC OS to show an overlay window, passing details of the file and overlay window to the second core? (Knowing NOTHING about the intricate details of course) ;@)

Rather like a subset of my earlier idea to run a complete   "Linux-in-a-window" on the spare cores.

Just blindly thinking…

No more than that on my part too …

VNC style?

Fazackerly, as they say on Merseyside!

Rather like a subset of my earlier idea to run a complete “Linux-in-a-window” on the spare cores.

Would need an hypervisor for RISC OS, that can offload tasks to other cores.

First step could be a new port of RPCEmu.

• Then JIT optimisations
• Then use of virtualisation instructions
• Then use of other cores
• Then support of more modern virtual hardware

A very complex task.

IMHO, it would be much simpler to have a better VNC client, or a Spice client, and to use Linux on another Pi :)

Or to make RISC OS running on a Linux hypervisor.

VNC style?

Wouldn’t that be very slow for video playback?

I was thinking more along the line of the old TV cards, so segregate RAM off to Linux to play the video using it’s methods, but using the co-ordinates sitting in shared memory somewhere, draw it to that window, and then get VideoCore to overlay one on the other?