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hw at gc-24.de
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 Posted: Thu Sep 24, 2020 9:32 am Post subject: [asterisk-users] call an IP camera? |
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Hi,
is it possible to "call" an IP camera? I'm thinking about something like
bridging with a music stream, but instead of streaming audio, bridge with
the video stream from the camera.
It would be very cool if I could just call the camera and see what's going
on. Ffmpeg shows the following streams available from the camera:
Stream #0:0: Video: h264 (Main), yuv420p(progressive), 1920x1080, 12
fps, 12 tbr, 90k tbn, 24 tbc
Stream #0:0: Video: h264 (Main), yuv420p(progressive), 640x352, 12 fps,
12 tbr, 90k tbn, 24 tbc
Perhaps it's not even necessary to recode the stream?
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Antony.Stone at asteri...
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| Posted: Thu Sep 24, 2020 9:58 am Post subject: [asterisk-users] call an IP camera? |
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On Thursday 24 September 2020 at 16:31:33, hw wrote:
| Quote: | Hi,
is it possible to "call" an IP camera?
|
Only if it talks SIP (which some do, generally door entry cameras with a push
button input and often a lock release output).
| Quote: | I'm thinking about something like bridging with a music stream, but instead
of streaming audio, bridge with the video stream from the camera.
|
So, maybe you should treat it like a music stream such as music on hold?
| Quote: | It would be very cool if I could just call the camera and see what's going
on. Ffmpeg shows the following streams available from the camera:
Stream #0:0: Video: h264 (Main), yuv420p(progressive), 1920x1080, 12
fps, 12 tbr, 90k tbn, 24 tbc
Stream #0:0: Video: h264 (Main), yuv420p(progressive), 640x352, 12 fps,
12 tbr, 90k tbn, 24 tbc
Perhaps it's not even necessary to recode the stream?
|
Very likely, but what you're looking at there is the media format; you also
need some sort of signalling protocol if you're going to call it from
Asterisk.
I would start with something like
https://www.voip-info.org/asterisk-config-musiconholdconf/
https://www.voip-info.org/wiki/view/Asterisk+config+musiconhold.conf
(or any more up to date documentation if you can find it).
I've never tried that with video, but given how the media negotiation between
Asterisk and SIP devices is handled, I would expect it to work given
compatible codecs.
Antony.
--
I bought a book on memory techniques, but I've forgotten where I put it.
Please reply to the list;
please *don't* CC me.
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rmiller at astrosys.com
Guest
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| Posted: Thu Sep 24, 2020 10:04 am Post subject: [asterisk-users] call an IP camera? |
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The Grandstream camera product line has SIP output so you can "call" the camera
-----Original Message-----
From: asterisk-users [mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of Antony Stone
Sent: Thursday, September 24, 2020 10:57 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] call an IP camera?
On Thursday 24 September 2020 at 16:31:33, hw wrote:
| Quote: | Hi,
is it possible to "call" an IP camera?
|
Only if it talks SIP (which some do, generally door entry cameras with a push
button input and often a lock release output).
| Quote: | I'm thinking about something like bridging with a music stream, but instead
of streaming audio, bridge with the video stream from the camera.
|
So, maybe you should treat it like a music stream such as music on hold?
| Quote: | It would be very cool if I could just call the camera and see what's going
on. Ffmpeg shows the following streams available from the camera:
Stream #0:0: Video: h264 (Main), yuv420p(progressive), 1920x1080, 12
fps, 12 tbr, 90k tbn, 24 tbc
Stream #0:0: Video: h264 (Main), yuv420p(progressive), 640x352, 12 fps,
12 tbr, 90k tbn, 24 tbc
Perhaps it's not even necessary to recode the stream?
|
Very likely, but what you're looking at there is the media format; you also
need some sort of signalling protocol if you're going to call it from
Asterisk.
I would start with something like
https://www.voip-info.org/asterisk-config-musiconholdconf/
https://www.voip-info.org/wiki/view/Asterisk+config+musiconhold.conf
(or any more up to date documentation if you can find it).
I've never tried that with video, but given how the media negotiation between
Asterisk and SIP devices is handled, I would expect it to work given
compatible codecs.
Antony.
--
I bought a book on memory techniques, but I've forgotten where I put it.
Please reply to the list;
please *don't* CC me.
--
_____________________________________________________________________
-- Bandwidth and Colocation Provided by http://www.api-digital.com --
Check out the new Asterisk community forum at: https://community.asterisk.org/
New to Asterisk? Start here:
https://wiki.asterisk.org/wiki/display/AST/Getting+Started
asterisk-users mailing list
To UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-users
--
_____________________________________________________________________
-- Bandwidth and Colocation Provided by http://www.api-digital.com --
Check out the new Asterisk community forum at: https://community.asterisk.org/
New to Asterisk? Start here:
https://wiki.asterisk.org/wiki/display/AST/Getting+Started
asterisk-users mailing list
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hw at gc-24.de
Guest
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| Posted: Thu Sep 24, 2020 11:29 am Post subject: [asterisk-users] call an IP camera? |
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|
On Thu, 2020-09-24 at 16:57 +0200, Antony Stone wrote:
| Quote: | On Thursday 24 September 2020 at 16:31:33, hw wrote:
| Quote: | Hi,
is it possible to "call" an IP camera?
|
Only if it talks SIP (which some do, generally door entry cameras with a
push
button input and often a lock release output).
| Quote: | I'm thinking about something like bridging with a music stream, but
instead
of streaming audio, bridge with the video stream from the camera.
|
So, maybe you should treat it like a music stream such as music on hold?
| Quote: | It would be very cool if I could just call the camera and see what's
going
on. Ffmpeg shows the following streams available from the camera:
Stream #0:0: Video: h264 (Main), yuv420p(progressive), 1920x1080,
12
fps, 12 tbr, 90k tbn, 24 tbc
Stream #0:0: Video: h264 (Main), yuv420p(progressive), 640x352, 12
fps,
12 tbr, 90k tbn, 24 tbc
Perhaps it's not even necessary to recode the stream?
|
Very likely, but what you're looking at there is the media format; you
also
need some sort of signalling protocol if you're going to call it from
Asterisk.
I would start with something like
https://www.voip-info.org/asterisk-config-musiconholdconf/
https://www.voip-info.org/wiki/view/Asterisk+config+musiconhold.conf
(or any more up to date documentation if you can find it).
I've never tried that with video, but given how the media negotiation
between
Asterisk and SIP devices is handled, I would expect it to work given
compatible codecs.
|
Unfortunately, musiconhold.conf doesn't understand rtsp:
#033[1;37mmoh_parse_options#033[0m: Playlist entries must be a URL or
absolute path, 'rtsp://10.10.30.20/12' provided.
Asterisk then ignores the configured music class when it's given like this
in musiconhold.conf (and plays music from the default class instead):
[test]
mode=playlist
entry=rtsp://10.10.30.20/12
So I guess that musiconhold may be limited to audio only. But who knows?
What are the requirements for the URLs that can be used with the
'playlist' option in musiconhold.conf?
It's generally possible to stream stuff to devices (like phones), like when
using the Playback() dialplan application to stream audio. Is it somehow
possible to stream audio from programs into channels from the dialplan or
somewhere else without using musiconhold.conf? If that was possible, it
might be possible to stream video instead.
Does pjsip support video? [1] would indicate that it doesn't. However,
that information seems to be over 8 years old :(
[1]: https://wiki.asterisk.org/wiki/display/AST/Video+Telephony
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_____________________________________________________________________
-- Bandwidth and Colocation Provided by http://www.api-digital.com --
Check out the new Asterisk community forum at: https://community.asterisk.org/
New to Asterisk? Start here:
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hw at gc-24.de
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sean.bright at gmail.com
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Antony.Stone at asteri...
Guest
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| Posted: Thu Sep 24, 2020 11:46 am Post subject: [asterisk-users] call an IP camera? |
|
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On Thursday 24 September 2020 at 18:28:13, hw wrote:
| Quote: | On Thu, 2020-09-24 at 16:57 +0200, Antony Stone wrote:
Unfortunately, musiconhold.conf doesn't understand rtsp:
|
| Quote: | [test]
mode=playlist
entry=rtsp://10.10.30.20/12
|
Have a look at https://www.voip-info.org/asterisk-config-musiconholdconf/ and
the section headings "Stream radio using MPlayer for MOH" and "Example using
asx (mms://)(.wmv) streams. (or “anything” that mplayer can play)."
Those look promising to me.
Antony.
--
"The future is already here. It's just not evenly distributed yet."
- William Gibson
Please reply to the list;
please *don't* CC me.
--
_____________________________________________________________________
-- Bandwidth and Colocation Provided by http://www.api-digital.com --
Check out the new Asterisk community forum at: https://community.asterisk.org/
New to Asterisk? Start here:
https://wiki.asterisk.org/wiki/display/AST/Getting+Started
asterisk-users mailing list
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