All Questions
41
questions
0
votes
2
answers
1k
views
How to save video into a file using OpenCV and Java?
Using OpenCV and Java I could live stream the video from the camera with the Java JFrame application, that means accessing the camera and capturing the video from the camera works as
well.
I want to ...
- 4,384
1
vote
0
answers
264
views
How to create a web service in Java that keeps push video binary data to a web page?
I have been doing researches on how to real-time stream video from a camera using Java and OpenCV. I could real-time stream the video with Java JFrame application.
Now I want to real-time stream the ...
- 4,384
0
votes
0
answers
127
views
OpenCV VideoWriter filps video
I'm using OpenCV 4.5.2 with Java bindings, and trying to create a video from set of frames.
class OpenCVVideoWriter(
size: com.domain.util.model.Size,
frameRate: Float,
outputFile: File
) {...
- 16.7k
0
votes
0
answers
399
views
I am using ffmpeg java library to convert captured screenshots to video. Video output is blurry
I am using ffmpeg java library to convert captured screenshots to video. Video which is generated as output is blurry.
I am using bit rate as 9000, frames per sec as 25 and video size as that of ...
- 29
0
votes
1
answer
660
views
Android OpenCV memory leak
I am working on an app that uses opencv to process video.
This is the opencv part of my function:
//Open the streams
var merged = VideoCapture()
merged.open(file.path)
var flicker = ...
- 644
0
votes
0
answers
324
views
"Bad src image pointers" error after calling setFrameNumber() on FFmpegFrameGrabber in JavaCV
I am in the process of creating a small video editor and currently trying to get video files to display in the preview window. To do that, I want to get a frame of a video at a specific position using ...
- 1,579
0
votes
1
answer
306
views
Read a mp4 and write to anther mp4 creates bigger size
I extracted frames of the mp4 (175KB)file into a folder as jpg files and then trying to write it back to a new mp4 (2.96MB). I see a huge file difference.
Another point i notice is that the data rate ...
- 3,313
1
vote
0
answers
271
views
How to overlay video over webcam streaming using opencv or ffmpeg in Java
In my project I am previewing webcam capture and video (in webm format with vp8 codecs) capture on the screen in Java Desktop application. Currently I use VideoCapture class to retrieve both webcam ...
- 131
1
vote
0
answers
2k
views
Java/OpenCV - How to do a lossless h264 video writing in openCV?
in the last time I had some struggle with the VideoWriter in openCV under java. I want to write a video file in a *.mp4 container with h.264 codec - but I see no option to toggle bitrate or quality in ...
- 13
0
votes
0
answers
695
views
Cant play a video in Processing - runtime exception
I'm trying to write a program for Brownian motion monitoring. The test code looks fine but I can't download the video nor in .avi nor in .mov format from the sketch folder, the window opens but it ...
0
votes
0
answers
517
views
JavaCV pass video frame to imread()
I'm trying to use JavaCV for template matching. The demo example is located here. I add all their .jar files to the project. I need to pass a video frame (say video.mp4's last frame) to imread() ...
- 1
0
votes
1
answer
4k
views
How can I send video stream to client side (Browser) by using RTSP
I want to implement something like below:
Reading the video stream from IP-Camera by using RTSP (which is
done)
Processing the image by OpenCV (which is done)
Sending the image to the browser to ...
- 6,069
1
vote
1
answer
3k
views
How to split video into frames using OpenCV Java?
I'm working on a project to analyze the motion of an object across a video, and I want to split the video into BufferedImage to analyze them frame by frame. Is OpenCV the best library for doing this? ...
- 301
1
vote
0
answers
221
views
Record video to memory in Java
I am using OpenCV 3.1.0 in Java to record video segments, and then upload those segments to a site. By using the VideoWriter class, I have to save each video segment to a file, but was hoping to ...
- 51
-3
votes
1
answer
356
views
How do I read a video from Minoru 3d webcam in OpenCV Python?
I am working on opencv python installed on Windows 10 (64 bit)
I am using Minoru 3D webcam.I wrote a code on reading a video from 2 lens camera.I am here with the following error:
Traceback (most ...
- 11