4 votes

Configuring uv4L for webRTC using USB camera on RPI2 raspbian

Thanks, JP. I followed your instructions and got my Logitech cam streaming successfully. Just the following notes for anyone interested, based on my experience: Did not need uv4l-xmpp-bridge (at ...
bandaangosta's user avatar
4 votes

UV4L crashes after failed WebRTC connection

How do I debug this? Does uv4l have any error logs? If so, what is the location of them? Yes, by inspection of /etc/uv4l/uv4l-uvc.conf you have some options for this. To enable logging via port 514 ...
jdonald's user avatar
  • 2,904
3 votes

Sorry, could not load the WebRTC extension for UV4L

What worked for me is as follows: I installed uv4l-webrtc-armv6 instead of uv4l-webrtc as given in the tutorial. Above step replaced uv4l-webrtc by uv4l-webrtc-armv6 which I could see by using ...
Ashok Kumar's user avatar
3 votes
Accepted

Stereo Vision Using Compute Module: Pi camera synchronization

The Pi Compute Module's stereoscopic support causes captures (and video recordings) to produce frames containing images from both attached cameras, either side-by-side or top-and-bottom, depending on ...
Dave Jones's user avatar
  • 3,978
3 votes
Accepted

How to configure UV4L?

I don't use a conf file; I just start it from a shell script. Although according to man u4vl they use the same options, in my experience it seems hard to get it them to work from the file (e.g., vflip ...
goldilocks's user avatar
  • 58.9k
2 votes

UV4L WebRTC from cellular network (no public IP)

First of all, every UV4L option documented in the man pages can be passed via both command line and configuration file. If the UV4L Web Server running on the Rpi3 cannot (easily) be reached in any ...
sminkiom's user avatar
2 votes

remove uv4l "software by http://linux-project.org" watermark

Instead of using uv4l's raspicam driver to driver the raspberry pi camera, you can use the kernel-based bcm2835-v4l2 driver. Just modprobe it and enable it using raspi-config, and you should have a /...
Lior Okman's user avatar
2 votes

Using the uv4l driver to stream and record to a file simultaneously

In case it helps anyone, I never managed to get this working using uv4l. Shame, as uv4l was the only approach I tried that could stream from the pi in near real-time to a browser. I did find an ...
abraae's user avatar
  • 41
2 votes

Setting up RTSP using v4l2

The correct commands to start an RTSP server on the Raspberry Pi are, for example: uv4l --driver raspicam --auto-video_nr --framerate 30 --extension-presence=0 cvlc v4l2c:///dev/video0:width=640:...
cacachu's user avatar
  • 121
2 votes
Accepted

Trouble using UV4L raspidisp

The raspicam driver is optional. That said, you are missing --auto-video_nr in your command line to create the /dev/video0 node expected by your program: sudo killall uv4l (in case some other ...
cacachu's user avatar
  • 121
2 votes

Stereo Vision Using Compute Module: Pi camera synchronization

In May 2016 Lattice Semiconductor published a guide (2:1 MIPI CSI-2 Image Sensor Aggregator Bridge Demo) for a Raspberry Pi dev kit used with the CrossLink Master Link board featuring a Lattice LIF-...
Will's user avatar
  • 21
1 vote
Accepted

UV4L and v4l2rtspserver

It seems uv4l needs to preload its library (see https://www.linux-projects.org/documentation/uv4l-core/) Something like : export LD_PRELOAD=/usr/lib/uv4l/uv4lext/armv6l/libuv4lext.so An alternative ...
mpromonet's user avatar
  • 1,124
1 vote
Accepted

UV4L webRTC demo crashes Raspberry Pi 3

uv4l is not yet supported on raspbian strectch (debian 9)
Emmanuel BRUNET's user avatar
1 vote

Configuring camera with uv4l

On my setup (stretch, pi zero, and pi camera via csi) I needed to say --device=/dev/video1 to get v4l2-ctl to work
Steve Z's user avatar
  • 11
1 vote

How to multiplex camera/video stream?

One way is to just use the native UV4L Streaming Server. According to this tutorial, you can open many raw H264 streams at the same time over HTTP or HTTPS. The tutorial shows the following command ...
mainard's user avatar
  • 11
1 vote
Accepted

Unable to connect to RPi from PC using ip address

Having agonised over this for a few days I eventually came across this much more detailed guide on how to install uv4l: http://www.home-automation-community.com/surveillance-with-raspberry-pi-noir-...
davel's user avatar
  • 31
1 vote
Accepted

U4vl Streaming to multiple web clients

In order to stream the camera to more than one peer (e.g. browsers) at the same time you need a SFU or MCU. One supported by UV4L is Janus Gateway. Both UV4L and Janus are pre-installed in this DEMO ...
cacachu's user avatar
  • 121
1 vote

uv4l and janus "use of hardware codec is disabled in this restricted edition"

The author of U4VL is elusive and secretive. I suggest using the contact form on www.linux-projects.org to negotiate a contract for commercial use. The pseudonyms of the author on the Raspberry Pi ...
flakeshake's user avatar
  • 6,235
1 vote

UV4L WebRTC from cellular network (no public IP)

At the end, I decided to put in place a reverse SSH tunnel and forward UV4L port to the public server. I forward the port using the following command: ssh -o StrictHostKeyChecking=no -Nf -R *:8080:...
Alessandro Dionisi's user avatar
1 vote

UV4L WPA Enterprise server

SSH and UV4L both use port assignments for routing. Your university network admin is likely to have blocked those ports - most people don't need to SSH into things in the library, and unnecessarily ...
goobering's user avatar
  • 10.7k
1 vote

How to specify fps (frame rate) when streaming video with uv4l?

You can use v4l2-ctl in the V4L2 tools collection to set the frame rate to one allowed value.
strumpet's user avatar
1 vote

How to use UV4L to realize WebRTC on Raspberry Pi?

p2p with rpi uv4l is not possible using browsers as browsers on rpi ( chromium and firefox ) cannot fetch the local media stream ( i don't know exactly why but i know they can't ) . So for inter-...
Altanai's user avatar
  • 131
1 vote

Streaming Audio and Video to View in a Web Browser

You can connect the Rapberry Pi to a GoPro via WiFi and get the live stream URL which would give you audio and video. You could then redirect that stream to something like YouTube Live so that it's ...
Adam Simms's user avatar
1 vote

Streaming Audio and Video to View in a Web Browser

13 may be more useful. After a couple of tweaks to use the UVC driver I found this to work with my USB webcam.
Chris Farker's user avatar
1 vote

Streaming Audio and Video to View in a Web Browser

A webcam will most likely not work; they are usually made for Windows and the chances that it would be made for Linux are very low. I'd try to use the Pi camera because it was specifically designed ...
anonymous's user avatar
  • 135
1 vote

USB camera not working with uv4l Video4Linux

mjpg-streamer uses the kernel support for V4L2 (/dev/video0). You could probably stream to web with that or gstreamer, but it's understandable that uv4l is simpler to configure for web streaming. (...
jdonald's user avatar
  • 2,904
1 vote

UV4L custom webpages?

You need to restart uv4l_uvc,not uv4l_raspicam, for USB webcams.
sminkiom's user avatar
1 vote

Constant large lag (2s) using uv4l to stream camera module to Android app

Use UV4L with webrtc for serious realtime streaming. I do not know why people insist with mjpeg over http.
brandi's user avatar
  • 42
1 vote

fswebcam: Unable to find a compatible palette format

It was a DV webcam: apt-get install dvgrab dvgrab - | mplayer -j They may be modules to install or load too (e.g modprobe raw1394)
user123456's user avatar
1 vote

UV4L can not be started : <alert> [core] No device detected

Your new stream will be on '--port=9090'. port=8080 is the default value. so change your ip to: http://raspberrypiIp:9090/stream or maybe your threadS flag IS causing a problem with the CPU. ...
Chris's user avatar
  • 86

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