CODEWITHSUNDEEP
linuxffmpegwebrtcip-camera
Minz
Minz

Reputation: 351

Use an IP-camera with webRTC

I want to use an IP camera with webrtc. However webrtc seems to support only webcams. So I try to convert the IP camera's stream to a virtual webcam.

I found software like IP Camera Adapter, but they don't work well (2-3 frames per second and delay of 2 seconds) and they work only on Windows, I prefer use Linux (if possible).

I try ffmpeg/avconv:

My problem is to make the link between these two steps (receive the rstp stream and write it to the virtual webcam). I tried ffmpeg -re -i rtsp://192.168.1.16/play2.sdp -f video4linux2 -input_format mjpeg -i /dev/video0 but there is an error with v4l2 (v4l2 not found).

Does anyones has an idea how to use an IP camera with webRTC?

Upvotes: 23

Views: 46205

Answers (6)

wan jerry
wan jerry

Reputation: 1

Actually our camera can support webrtc. It uses ip camera with h5, from P2P tramsmitting, and two way talk for ip camera with web browser! The delay is only 300ms!

Upvotes: 0

TekuConcept
TekuConcept

Reputation: 1284

For those who would like to get their hands dirty with some native-WebRTC, read on...

You could try streaming an IP camera’s RTSP stream through a simple ffmpeg-webrtc wrapper: https://github.com/TekuConcept/WebRTCExamples .

It uses the VideoCaptureModule and AudioDeviceModule abstract classes to inject raw media. Under the hood, these abstract classes are extended for all platform-specific hardware like video4linux or alsa-audio.

The wrapper uses the ffmpeg CLI tools, but I don’t feel it should be too difficult to use the ffmpeg C-libraries themself. (The wrapper relies on transcoding, or decoding the source media, and then letting WebRTC re-encode with respect to the ICE connections’ requirements. Still working out pre-encoded media pass-through.)

Upvotes: 3

Birkensox
Birkensox

Reputation: 3721

If you have video4linux installed, the following command will create a virtual webcam from an rtsp stream:

  gst-launch rtspsrc location=rtsp://192.168.2.18/play.spd ! decodebin ! v4l2sink device=/dev/video1

You were on the right track, the "decodebin" was the missing link.

Upvotes: 4

lulop
lulop

Reputation: 917

I have created a simple example transforming a RTSP or HTTP video feed into a WebRTC stream. This example is based on Kurento Media Server (KMS) and requires having it installed for the example to work.

Install KMS and enjoy ...

https://github.com/lulop-k/kurento-rtsp2webrtc

UPDATE 22-09-2015. Check this post for a technical explanation on why transcoding is just part of the solution to this problem.

Upvotes: 7

mpromonet
mpromonet

Reputation: 11942

Janus-gateway recently added a simple RTSP support (based on libcurl) to its streaming plugins since this commit

Then it is possible to configure the gateway to negotiate RTSP with the camera and relay the RTP thought WebRTC adding in the streaming plugins configuration <prefix>/etc/janus/janus.plugin.streaming.cfg

[camera]
type = rtsp
id = 99
description = Dlink DCS-5222L camera
audio = no
video = yes
url=rtsp://192.168.1.16/play2.sdp

Next you will be able to access to the WebRTC stream using the streaming demo page http://..../demos/streamingtest.html

Upvotes: 7

Benjamin Trent
Benjamin Trent

Reputation: 7566

Short answer is, no. RTSP is not mentioned in the IETF standard for WebRTC and no browser currently has plans to support it. Link to Chrome discussion.

Longer answer is that if you are truly sold out on this idea, you will have to build a webrtc gateway/breaker utilizing the native WebRTC API.

  1. Start a WebRTC session between you browser and your breaker
  2. Grab the IP Camera feed with your gateway/breaker
  3. Encrypt and push the rtp stream to your WebRTC session from your RTSP stream gathered by the breaker through the WebRTC API.

This is how others have done it and how it will have to be done.

UPDATE 7/30/2014:

I have experimented with the janus-gateway and I believe the streaming plugin does EXACTLY this as it can grab an rtp stream and push it to an webrtc peer. For RTSP, you could probably create RTSP client(possibly using a library like gstreamer), then push the RTP and RTCP from the connection to the WebRTC peer.

Upvotes: 8

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