[PLUG-AV] Another experiment in updating our AV workflow

[Harry McNally]

Hi James

On 17/5/21 4:00 pm, James Henstridge wrote:
> I haven't done much work on that code base since March.  The last
> thing I was working on was to try and simplify the configuration
> process so you wouldn't have to write GStreamer pipelines in the
> general case: instead, you could tell it that you want to use a
> particular camera at a particular resolution and framerate, and have
> it figure the rest out.  With that said, I believe the code should
> still function as is.

If you have time to describe the Raspbian setup for testing the work to date 
on the list, would it assist if I prepare an SD card for the RPi4 I have to 
bring along to the next meetup ?

It will give me time to prepare so I can drop in and do integration testing 
quickly. If you do any additional work that requires change on the RPi4 let me 
know again and I can tweak.

Also, if Nick's capture device suits, may I suggest deleting the USB hub and 
use a USB extender cable:

https://www.ple.com.au/Products/624625/Startech-1m-Black-USB-30-Male-to-Female-USB-30-Extension-Cable-A-to-A

I didn't see a 15cm one and I have purchased very short HDMI cables before so 
it is worth considering if the RPi4 should be up next to the camera or on the 
floor with a longer HDMI cable and purchase test cables to suit.

> I haven't really investigated sending audio yet.  You can definitely
> transmit audio with RTSP/RTP, so it would probably just work with an
> appropriate pipeline.  I hadn't really investigated much further
> though, since our use of wireless microphones reduces the need for
> remote audio: we could just plug the audio mixer directly into the
> machine running OBS Studio.

This makes sense. When I get a moment, I will post a mixer requirements to the 
list for scrutiny. Once I know what features are needed I can review those USB 
powered mixers.

All the best
Harry