Im slightly confused...
Are you saying you'd like the
Goggles to have an HDMI out, or your Controller?
I expect you already know this, but the
Smart Controller has that option, and I can attest, it works quite well, although you, as pilot, have to be stationary.
Now, if your saying you'd prefer the
Goggles to have HDMI out, then all I can say, is that 'seems' much less useful, but then again, you would have that 'wireless' effect, if your not going to actually be wearing the
Goggles, but instead use them as a Video out 'Node'
(I mention this because you posted in the
DJI Goggles sub-forum)
The wireless option sounded good and it could be done using Smart RC, if the apps needed, were accessable via APKPure, or possibly Amazon appstore, as the Googleplay appstore is not YET available on the SRC (ie: no one has come up with a sideload that includes the proper google background services required).
Although, regarding the SRC and the wireless option, the SRC is not the most powerful device, this day and age (meaning this year, as anything older than that is obsolete, and the SRC specs match that of a 2016-17' device, sadly) so this option may not run as smoothly as it would on a newer device such as a Note8, S10, Iphone 10, etc.
My SRC stutters non stop, with CPU slammed at 99% when I initiate screen record. So that may be an issue.
Honestly, your going to find some level of inconveinance in any method of 'separate screen streaming', even using the live streaming option, (which theyll probably never release, as advertised, because they know the SRC isnt quite strong enough to handle it) will have its own issues, so Id just go with a longgg HDMI cord, run inside, while your outside, so that would give you the 'sterile cockpit' your going for, without moving your TV... But I get why you'd like to see Live streaming come along finally!
Good luck mate