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Questions tagged [uv4l]

UV4L is a modular collection of Video4Linux2-compliant, cross-platform, user space drivers for real or virtual video input and output devices (with absolutely no external difference from kernel drivers), and other pluggable back-ends or front-ends. It has evolved during the time and now includes a full-featured Streaming Server component providing a set of modern and unique solutions for live audio&video streaming, mirroring and conferencing over the web.

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uv4l WebRTC stream not working on Raspberry Pi zero 2 w

I want to use WebRTC over my Raspberry Pi zero 2 w with an external webcam, so that I can communicate to other raspberrys, computers or smartphones. Problem is, that I'm very new to this topic. I ...
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Working on UV4l to get the Streaming Server running

I used the following command to start the streaming server sudo uv4l --external-driver --device-name=video1 --server-option '--port=1226' upon this command I have the following output in my terminal &...
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WebRTC and i2s microphone problem

Hope someone can help. I have this mic, uv4l and webrtc installed on my rpi B+ with buster. I control the raspberry pi via SSH. When I open a brower on my mobile phone, I can speak into it and get the ...
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1 vote
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IR-Keytable support for the variable frequency & modulation

I am working on the RPI-CM4 with the ir-keytable library. I am using the TSMP97000 sensor to read the modulated data from the IR transmitter(Remote). it-keytable library is working successfully with ...
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v4l-utils Based IR remote control

After spending a lot of time searching how LIRC works on the raspberry pi. Found that LIRC is deprecated & will be replaced by the v4l-utils. I would like to know, Is there any library(git hub ...
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1 answer
133 views

Trying to play Retropie on my browser

I flashed the latest retropie image on to my microsd on a raspberry pi 4B using the official raspberry pi imager. I wanted to do a headless setup since I was on a budget, and it was more appealing to ...
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1 vote
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How to change the username for uv4l on raspberry pi?

I am using uv4l on raspberry pi. I can't seem to find the username option in the config file /etc/uv4l/uv4l-raspicam.conf. The only usernames available are 'user' and 'admin'. I can change the ...
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Directly read stream from uv4l server on external node.js server in network

I'm trying to connect the uv4l-server stream directly to a node.js server. I'd like to be able to read the stream with the node-webrtc package on an external device. I already have a websocket ...
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2 votes
0 answers
455 views

UV4l HTTPS ssl /etc/UV4l-UVC.conf

I am trying to add https to my conf file. I have made the following changes. HTTPS options: server-option = --use-ssl=yes server-option = --ssl-private-key-file=/etc/uv4l/selfsign.key server-option =...
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1 vote
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708 views

UV4L huge CPU load on streaming audio

I'm building a little baby monitor using RaspberryPi ZeroW and UV4L and run into a little problem. I'm using WebRTC to cast video and audio to my browser from RPI camera (used facedetect demo, ...
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1 vote
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Software/Framework Recommendations [closed]

I'm prototyping a device using a raspberry pi 3b+. Here are some of the requirements I'm hoping to fulfill. *When I say "device" I'm referring to the raspberry pi. Device Requirements Stream ...
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3 votes
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uv4l usb camera stream not working

I am using a raspberry pi 3b+, trying to make the usb camera work with uv4l streaming. These are the packages I've installed: uv4l uv4l-raspicam uv4l-raspicam-extras uv4l-server uv4l-uvc uv4l-...
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3 votes
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webcam issue after UV4L installation

I am trying to make a usb webcam work on my rpi but it drives my nuts. I have Rpi 3 model B+ Also I've downloaded the newest raspbian image (stretch with desktop and recommended software). It's ...
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1 vote
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485 views

uv4l with multiple usb camera

I have 2 usb camera(1,2) and want to stream for each camera. I have used driver = uvc, but when i use default port 8090 for camera1, it works fine. When i explicity stated --server-option='--port=9000'...
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2 answers
3k views

UV4L raspicam webstreaming in H264

I'm having some trouble getting H264 streaming to work. I've been digging around a little and it seems the problem is that UV4L is sending raw H264, which is not directly playable in Chrome. Does ...
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1 answer
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UV4L and v4l2rtspserver

I am trying to stream with uv4l over v4l2rtspserver This is what I do: Start /dev/video0 $ uv4l -nopreview --auto-video_nr --driver raspicam --encoding h264 [core] Trying to loading driver '...
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1 answer
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Sorry, could not load the WebRTC extension for UV4L

I have a RPi 3B with a Raspberry-pi Camera Module OV5647 sensor HD video Webcam 5MP 1080p mounted and working. I am trying to get UV4L streaming working and have encountered a problem. UV4L driver ...
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UV4L & USB Webcam - How to change Resolution, FPS etc?

I've been using UV4L for streaming for quite a while now and think it does a brilliant job, especially with the PiCamera 2 module. I now want to use the program with a USB Webcam as a few days ago I ...
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Configuring camera with uv4l

I am using a USB camera and uv4l to stream the video to another machine. This is how I invoke uv4l: uv4l --driver uvc --device-id [bus:id] --config-file /etc/uv4l/uv4l-uvc.conf I want to configure ...
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1 vote
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Getting UV4L working with USB camera

I have installed the UV4L suite of software onto RPi3 with Jessie. I am using a USB cam (Logitech C170) rather than RPi cam. I have been struggling to get this working reliably. Initially I could ...
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2 votes
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UV4L wont allow multiple users on .mjpeg stream

I'm trying to make a survaillance system with UV4L i already succeed to play i live streaming and record the live stream from UV4L the problem is that when UV4L detects more than 3 users it blocks the ...
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2 answers
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Raspberry Pi Camera uv4l stream a recording at the same time with Picamera

Im using uv4l to stream from my raspberry pi, and it works perfectly but if i wanna use a python script to record while streaming i'm getting this error: mmal: mmal_vc_port_enable: failed to enable ...
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2 answers
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UV4L audio + video recording or stream?

I have experimented with a number of different ways of streaming both audio and video from the raspberry pi. The UV4L web server has great webRTC support, and the bi-directional audio/video ...
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How to multiplex camera/video stream?

I'm streaming Raspberry's Pi h264-encoded uv4l video device with netcat like this: cat /dev/video0 | nc -klp 2222 On the "client-side" I can view the stream with: mplayer -fps 30 -demuxer h264es ...
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UV4L webrtc broker server on public ip

Current Situation I'm using two-way webrtc streaming service on UV4L. As a default, UV4L server is deployed on raspberry pi. We can connect to UV4L's websocket server through raspberry pi's local ...
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2 votes
1 answer
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Unable to connect to RPi from PC using ip address

My problem is that I can’t view the uv4l video stream from the picamera in my PC’s web browser. My setup is: Raspberry Pi 3 - running Jessie - wireless connection to router. PC - running Windows 10 -...
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How to access Raspberry Pi UV4L Streaming server from outside ip without port forwarding?

Expectation Through a web browser, access should be made to my Raspberry Pi server that is not on the same Wi-Fi with the web browser. I need to make my Raspberry Pi portable, so I don't know which ...
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2 votes
0 answers
520 views

Pi zero with Pi can video steaming stability issues

I wanted to setup my pi zero and pi camera as a rstp streaming cctv camera. I tried motion, but this ran the pi at 100% cpu utilisation and I didn't need motion capture as a I have a seperate (motion) ...
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2 votes
1 answer
1k views

U4vl Streaming to multiple web clients

I am using uv4l-raspicam and the uv4l-server with WebRTC support, and I am able to stream the image of my camera to one single viewer of the website. The other viewers get an error message that there ...
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4 votes
1 answer
919 views

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

I have a rpi 3 with the v2 camera running stretch 9.1. I've installed raspicam and uv4l according to the instructions on linux-projects.org. I have the janus gateway setup on a separate box. I am ...
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1 vote
1 answer
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Setting up RTSP using v4l2

Around one year ago I built some Raspberry pi streaming device fitting on a model train. Being unhappy with the setup process on how to receive the stream on windows (using MPlayer), I decided to use ...
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1 vote
1 answer
3k views

Trouble using UV4L raspidisp

I'm having trouble using the UV4L raspidisp device driver from linux-projects. This is supposed to provide a V4L2 compliant device that provides the output from the Raspberry Pi's HDMI output at /dev/...
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1 vote
1 answer
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UV4L webRTC demo crashes Raspberry Pi 3

When I access the UV4L webRTC video streaming demo (https://www.linux-projects.org/uv4l/tutorials/custom-webapp-with-face-detection/) from my android device my Raspberry Pi 3 crashes. Connecting to ...
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3 votes
1 answer
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UV4L crashes after failed WebRTC connection

I have a resin.io project and I'm trying to get WebRTC streaming to work. I used instructions from here to modify my Dockerfile. What I'm doing: Install UV4L software: RUN apt-get update &&...
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2 votes
2 answers
1k views

UV4L WebRTC from cellular network (no public IP)

I'm developing a project in which I have a Rpi 3 with camera and UV4L working with WebRTC. What I want to do basically is streaming Rpi camera to a browser using WebRTC, even if the Rpi is connected ...
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2 votes
5 answers
5k views

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

Using the Compute Module & IO Board, I installed uv4l. I'm just not sure why this "software by http://linux-project.org" watermark showed up only when I use Stereoscopic Vision. (No watermark ...
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How can I automatically set the resolution on uv4l at startup

I have had a webcam setup with port forwarding and dynamic DNS - everything works fine except I would like to automatically set the resolution of the uv4l server to 1024x768 when the Raspberry Pi ...
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2 votes
3 answers
5k views

Streaming Audio and Video to View in a Web Browser

I have been thinking of things for our kids to do in school at lunch time and thought of starting a School Radio Channel and then thought - why not make a TV channel that can be viewed over the LAN. ...
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3 votes
1 answer
4k views

USB camera not working with uv4l Video4Linux

I would like to install a babycam with my Pi so I need video and sound. After searching I found that Video4Linux might be the best. So I installed a fresh copy of Raspbian Jessie on my Pi 3, attached ...
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1 vote
1 answer
1k views

UV4L custom webpages?

I am trying to build custom webpage supporting uv4l webrtc. following the document at - uv4l server i edited /etc/uv4l/uv4l-uvc.conf (i am using USB camera) as follows ### serving custom Web ...
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1 answer
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Constant large lag (2s) using uv4l to stream camera module to Android app

I'll try do my best to share the steps I've taken to fix lag on video with my raspberry pi. I'm building a robot that has a raspberry pi mounted on top of it, which talks to an app for android ...
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0 votes
1 answer
3k views

fswebcam: Unable to find a compatible palette format

I am unable to use my webcam. Running fswebcam out.png, I get the error: Unable to find a compatible palette format. What would be the origin of the error and how to fix it? It can be a missing ...
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2 answers
3k views

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

I was using uv4l package for streaming.suddenly it stopped working when I want run this command for example : "sudo uv4l -nopreview —auto-video_nr —driver raspicam —encoding mjpeg —width 640 —height ...
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1 vote
1 answer
227 views

UV4L from Mobile Hotspot

I have attempted to use UV4L services while attached to an Enterprise type network and, due to the security, haven't been able to. My alternative was to use a tablet that I have as an access point via ...
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1 vote
2 answers
7k views

Stereo Vision Using Compute Module: Pi camera synchronization

Good day, I am currently working on an obstacle avoiding UAV using stereo vision to obtain depth maps. I noticed that the quadcopter would sometimes not steer to the correct direction. I am using ...
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0 votes
1 answer
121 views

UV4L WPA Enterprise server

Has anyone attempted to run UV4L over a WPA-EAP type network? (i.e. University WIFI) On my home network, UV4L works just fine. Here, on campus, it doesn't work. (I keep getting a server not ...
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6 votes
1 answer
16k views

How to configure UV4L?

I have been trying to edit the .conf file for raspicam to change the default resolution; however, I can seem to figure out the right command for enabling configuration permissions. When I access the ....
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2 votes
1 answer
7k views

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

I run the following command: uv4l --driver uvc --device-id '0458:7081' It seems to be working, but I've no idea how to define lower fps to reduce traffic. The manual didn't help. The distro is Debian ...
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1 vote
0 answers
867 views

UV4L MJPEG stream gets stuck after a while

I'm using UV4L HTTP server for MJPEG video streaming from Raspberry Pi Model B v2. I've followed this manual, How to install or upgrade UV4L on Raspbian Wheezy & Raspbian Jessie (for Raspberry Pi)...
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3 votes
1 answer
3k views

How to use UV4L to realize WebRTC on Raspberry Pi?

The browser on RPi does not support WebRTC, so I use UV4L, and UV4L realizes WebRTC . At the same time Streaming Server can support peer to peer real time connection over LAN, but how to make RPi ...
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