Right. To elaborate a bit more:
IP/UDP/RTP as transport for far-end camera control
ITU-T Rec. H.323 Annex Q as the RTP payload format.
RFC 4573 as the media type specification when using SIP or other SDP-based signaling
Inside H.323 Annex Q, ITU-T Rec. H.224 for the framing, and in those frames H.281 for the far end camera control syntax.
This combination has been used in set-top-box, roll-about, and older H.323 and SIP based desktop video conferencing systems for the past 20 years or so. It works. There are a number of PTZ cameras out there that respond to the H.281 syntax, received over a serial link or its USB emulation. I'm unaware of deployment in the current mostly closed systems (Zoom etc.), but note that at least some of those can drive PTZ cameras.
Stephan
On 7/5/20, 11:08 AM, "ietf on behalf of Gunnar Hellström" <ietf-bounces@xxxxxxxx on behalf of gunnar.hellstrom@xxxxxxxxxxx> wrote:
There is one in RFC 4573.
Regards
Gunnar
Den 2020-07-05 kl. 04:28, skrev John Scudder:
> If I were looking for such things I’d probably start with SMPTE, not IETF.
>
> Either way, best of luck.
>
> --John
>
>> On Jul 3, 2020, at 2:02 PM, Michael Thomas <mike@xxxxxxxx> wrote:
>>
>> [External Email. Be cautious of content]
>>
>>
>> I have a friend who is a theater person, who as everybody knows has been
>> completely shut down. I remarked to him that it's probably time to start
>> thinking about streaming plays. His counter is that it's expensive which
>> I'm guessing is mainly in the production costs much more than the
>> equipment. What occurs to me is that you don't *really* need camera
>> people on site, or at least it's very plausible that they could do this
>> remotely which would cut down quite a bit of the cost.
>>
>> So the obvious question is whether there are existing standards for
>> remote operation of cameras, sound equipment, lighting, etc? Is this
>> something we've done?
>>
>> Mike
