javacv

javacv copied to clipboard

OpenCVFrameGrabber default search path

1

Hello, I'm working with a decklink capture card and when running: `OpenCVFrameGrabber grabber = new OpenCVFrameGrabber(0)` this works great on Windows. But when running the same thing: `OpenCVFrameGrabber grabber =...

PotatoPeeler3000

How to use GPU to accelerate matrix operations

1

Hi developer, I want to use GPU to accelerate matrix operations, but i meet some problem and hope to get your help. I did a test to verify that GPU...

git-newer

Exception in thread "main" java.lang.UnsatisfiedLinkError: no jniopenblas_nolapack in java.library.path: /usr/java/packages/lib:/usr/lib64:/lib64:/lib:/usr/lib

1

Exception in thread "main" java.lang.UnsatisfiedLinkError: no jniopenblas_nolapack in java.library.path: /usr/java/packages/lib:/usr/lib64:/lib64:/lib:/usr/lib at java.base/java.lang.ClassLoader.loadLibrary(ClassLoader.java:2429) at java.base/java.lang.Runtime.loadLibrary0(Runtime.java:818) at java.base/java.lang.System.loadLibrary(System.java:1989) at org.bytedeco.javacpp.Loader.loadLibrary(Loader.java:1832) at org.bytedeco.javacpp.Loader.load(Loader.java:1423) at org.bytedeco.javacpp.Loader.load(Loader.java:1234) at org.bytedeco.javacpp.Loader.load(Loader.java:1210) at org.bytedeco.openblas.global.openblas_nolapack.(openblas_nolapack.java:12) at java.base/java.lang.Class.forName0(Native Method) at...

manju22412

Is there a more efficient way to write the frames? FFmpegFrameRecorder

5

I'm making an application that records the application's screen and it's working fine, but it uses a lot of memory when it's writing the frames. I don't know if it's...

thisames

How to get byte[] more efficient?

6

Application: Java client(FrameGrabber)->websocket.sendBinary->php Server(Imagick->readImageBlob) ``` grabber = FrameGrabber.createDefault(1); grabber.setFormat("dshow"); grabber.setBitsPerPixel(8); grabber.setImageWidth(1920); grabber.setImageHeight(1080); grabber.start(); System.out.println("Before frameToByteArray Time: " + System.currentTimeMillis()); byte[] imageBytes = frameToByteArray(frameMat); System.out.println("After frameToByteArray Time: " + System.currentTimeMillis()); //...

gordonyfg

How Do I Shield Log Printing?

1

Look at the picture  I don't want to print what's in the red box. What should I do?

chenguolei

Flac getAudioBitrate has always been 0

4

I tried it out and it seems like Flac is like this. Other formats have returns, but Flac has always been 0

Janix520

Error on InputStream.read(): java.io.IOException: closed

3

When I use FFmpegFrameGrabber(InputStream) and the InputStream is closed, I only get the message on stderr: `Error on InputStream.read(): java.io.IOException: closed` FFmpegFrameGrabber#grab then still waits in line 1454 `pkt.stream_index(-1);` infinitly....

ulde1

Weird timing issue on recordings made with VideoInputFrameGrabber

5

Right now I have a very weird problem, but you guys might now what's happening so I hope you have an idea. In the recordings I make with the opencv...

mtvgn

Major problem with Javacv when grabbing from camera & showing frames in JavaFX ImageView

31

Hi again, this time I've got a broader question, I don't know if this is JavaCV related but it feels like it might be and as I don't know where...

mtvgn