kandi X-RAY | Webcam Summary
kandi X-RAY | Webcam Summary
Make an android phone a WiFi webcam.
Top functions reviewed by kandi - BETA
- Called when the surface is created
- Creates the surface view
- Get IP address
- Show a notification
- Handle a connection
- Send default response
- Sends a snapshot
- Send stream
- Create and initialize the preferences
- Initialize size preferences
- Closes the camera
- Closes the server
- Initializes the component
- Initialize the camera
- Called when the button is clicked
- Initializes the surface
- Initializes the action bar
- Destroy the camera
- Run the server
- Called when image is preview frame
Webcam Key Features
Webcam Examples and Code Snippets
Trending Discussions on Webcam
need help this is my code:...
ANSWERAnswered 2021-Sep-08 at 15:12
I just looked into the sourcecode at https://github.com/google/mediapipe/blob/master/mediapipe/python/solutions/holistic.py
FACE_CONNECTIONS seems to be renamed/replaced by
Just changing that name in the code should work.
PS: If you want just the outlines of the face, it's now
I am trying to take a snapshot of a video feed from a webcam. The preview works fine, but when I try to capture it and turn it into a picture only a very small part of it is captured. A 320x150 part of the right top corner.
- Changing CSS display property
- Setting canvas width and height to video height (Which shows 1200x720, so that is correct
- Changing the location of the canvas.
ANSWERAnswered 2022-Mar-11 at 17:57
You need to set the size of the actual canvas, like this:
I'm trying to implement a webcam using PyQt5 from an example I found (here, but not really relevant). Getting the example to work wasn't an issue, but I wanted to modify some things and I am stuck on one particular problem.
I have two classes, one QObject
Capture which has a QBasicTimer that I want to start, and a QWidget
MyWidget with a button that is supposed to start the timer of the
Capture object, which is inside a QThread.
If I directly connect the button click to the method that starts the timer, everything works fine.
But I want to do some other things when I click the button, so I connected the button to a method of
MyWidget first and call the
start method of
Capture from there. This, however, doesn't work: the timer doesn't start.
Here is a minimal working example:...
ANSWERAnswered 2022-Feb-10 at 22:43
If you connect the button's
clicked signal to the worker's
start slot, Qt will automatically detect that it's a cross-thread connection. When the signal is eventually emitted, it will be queued in the receiving thread's event-queue, which ensures the slot will be called within the worker thread.
However, if you connect the button's
clicked signal to the
startCapture slot, there's no cross-thread connection, because the slot belongs to
MyWidget (which lives in the main thread). When the signal is emitted this time, the slot tries to create the timer from within the main thread, which is not supported. Timers must always be started within the thread that creates them (otherwise Qt will print a message like "QBasicTimer::start: Timers cannot be started from another thread").
A better approach is to connect the
finished signals of the thread to some
stop slots in the worker, and then call the thread's
quit methods to control the worker. Here's a demo based on your script, which shows how to implement that:
We have several lambda functions, and I've automated code deployment using the gradle-aws-plugin-reboot plugin.
It works great on all but one lambda functions. On that particular one, I'm getting this error:...
ANSWERAnswered 2021-Dec-09 at 10:42
I figured it out. You better not hold anything in your mouth, because this is hilarious!
Basically being all out of options, I locked on to the last discernible difference between this deployment and the ones that worked: The filesize of the jar being deployed. The one that failed was by far the smallest. So I bloated it up by some 60% to make it comparable to everything else... and that fixed it!
This sounds preposterous. Here's my hypothesis on what's going on: If the upload takes too little time, the lambda somehow needs longer to change its state. I'm not sure why that would be, you'd expect the state to change when things are done, not to take longer if things are done faster, right? Maybe there's a minimum time for the state to remain? I wouldn't know. There's one thing to support this hypothesis, though: The deployment from my local computer always worked. That upload would naturally take longer than jenkins needs from inside the aws vpc. So this hypothesis, as ludicrous as it sounds, fits all the facts that I have on hand.
Maybe somebody with a better understanding of the lambda-internal mechanisms can add a comment to this explaining how this can happen...
I have a task, but I can't seem to get it done. I've created a very simple WebRTC stream on a Raspberry Pi which will function as a videochat-camera. With ionic I made a simple mobile application which can display my WebRTC stream when the phone is connected to the same network. This all works.
So right now I have my own local stream which shows on my app. I now want to be able to broadcast this stream from my phone to a live server, so other people can spectate it.
I know how to create a NodeJS server which deploys my webcam with the 'getUserMedia' function. But I want to 'push' my WebRTC stream to a live server so I can retrieve a public URL for it.
Is there a way to push my local Websocket to a live environment? I'm using a local RTCPeerConnection to create a MediaStream object...
ANSWERAnswered 2021-Dec-10 at 16:54
Is there a way to push my local Websocket to a live environment?
To realize why this is needed think about how the webrtc connection is established in your current app. It's a negotiation between two parties (facilitated by a signaling server). In order to turn this into a multi-cast setup you will need a proxy of sorts that then establishes separate peer-to-peer connections to all senders and receivers.
I am trying to predict with a ANN classification model made in Tensorflow to classify pose keypoints with MediaPipe. The mediapipe pose tracker has 33 keypoints for x y and z coordinates for a total of 99 data points.
I am training for 4 classes.
This is running the pose embedding...
ANSWERAnswered 2021-Nov-17 at 08:30
Maybe try changing the shape of
(33, 3) to
(1, 99) after your assertion and before you make a prediction:
I am trying to record RTP stream with video and audio to HLS. Using GStreamer and nodejs. I get
WARNING: erroneous pipeline: no element "fdkaacenc". I am using macOS with M1 CPU and all plugins base, good, bad, and ugly are installed.
The whole command I am trying to execute is this...
ANSWERAnswered 2021-Nov-23 at 16:44
I fixed that by
avenc_aac instead of
fdkaacenc. Not to mention that you should use
audioconvert before avenc_aac.
The part of command I was trying to convert to aac:
rtpopusdepay ! opusdec ! audioconvert ! avenc_aac.
avenc_aac is part of gstreamer ffmpeg plugins which exists in linux, mac and windows.
fdkaacenc is part of gstreamer bad plugins that may not be the same in all systems. That's is why using
avenc_aac is more approperiate. So it can be executed in both mac and linux.
The broadcaster code can be viewed in its entirety in this lovely article by Gabriel Tanner.
It works beautifully when running it in localhost under the
http://localhost:4000/broadcaster.html in Chrome and then visiting my IP Address from another device on the network. I can see the video and it is near real time.
After following the tutorial and getting the example to work I decided to try and implement my own Android application for which the entire source code can be viewed right here on my GitHub.
I have followed various tutorials around the place and the issue always stems from attempting to set the remote description which is done with the following bit of code:...
ANSWERAnswered 2021-Nov-16 at 04:29
The error message was triggered due to the offer containing H264 codecs whilst the Android Client was not anticipating H264 and was not setup to encode and/or decode this particular hardware encoded stream.
The fix was to ensure that the connection factory was setup as such:
But there is a problem if the js code contains async/await, for example:
ANSWERAnswered 2021-Nov-11 at 09:27
tl;dr: This is how.
c# doesn't need to be aware of the
async and it should work.
I just made a little test using
I have this simple Python code that captures video from the camera and makes predictions on the emotions of the face (took it from here in case you need to run it).
I like to put this video capture inside this frame (center is transparent) and display all. How can I do this?
ANSWERAnswered 2021-Oct-06 at 20:56
Short Implementation of Christoph's great solution in the comments.
Step 1: Use the paint tool to extract the coordinates of the black box region.
you can see the x,y coordinates at the bottom of your image.
a. resize every frame of the video to fit the black region size. width = x1 - x0 and height = y1 - y0.
b. replace the black region pixels with the resized frames.
You can use Webcam like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the Webcam component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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