jmf

问题 I am using JMF to operate my web cam.My usb webcam works perfectly with JMF, I used it in JMStudio however,when I make this call from my java code deviceListVector = CaptureDeviceManager.getDeviceList( null ); my USB "webcam" is detected however when i am trying to detect webcam on my laptop it is not detecting any device. How can I properly detect the webcam of laptop, and its formats, from JMF API? 回答1: Make sure that the system you're using it on contains all the required files eg On

问题 How can I get a from b and c ? What would be the reverse operation? Here is the code: class s { public static void main(String ar[]) { int a = 20; int b = 5; int c = 0; c = (a & b) ; System.out.println(c); int d = (c & b); System.out.println(d); } } 回答1: You can't. If a bit in c is 0 and the corresponding bit in b is 0, it's impossible to know whether the corresponding bit in a was 0 or 1. By a similar argument, bitwise OR (the | operator) is also irreversible. On the other hand, bitwise XOR

问题 I am trying to play a video file using JMF but it gives me No Media Player found exception . Here is my code, can anyone tell me what I am doing wrong here? public class MediaPanel extends JPanel { public MediaPanel(URL mediaURL) { setLayout(new BorderLayout()); try { Manager.setHint(Manager.LIGHTWEIGHT_RENDERER, true); Player mediaPlayer = Manager.createRealizedPlayer(mediaURL); Component video = mediaPlayer.getVisualComponent(); Component controls = mediaPlayer.getControlPanelComponent();

问题 Currently we are in the design phase of an application that will allow two users to communicate with each other using chat and video (with audio), the application is a web application that currently is a java web app with Spring and hibernate, but we want to incorporate video and chat between two users and we are evaluating the options to developing it, so far we have two choices, either develop a Flex UI that leverages its video and chatting capabilities through Red5 or something like that

问题 I am trying to launch my my code and start the player. But I can not do that. import javax.media.*; import java.io.*; public class MP3Player { public static void main(String[] args) throws Exception { File file = new File("c://player/trigger.mpg"); MediaLocator mrl = new MediaLocator(file.toURL()); Player player = Manager.createPlayer(mrl); player.start(); } } [Edit by Philipp] According to a comment by the original author, Netbeans prints the following error message: Unable to handle format:

问题 How can I check whether the mediaplayer is playing or stopped, using Java Media Framework? 回答1: You can call getState and check against Controller.Started: if (mediaPlayer.getState() == Controller.Started) 回答2: // Register ControllerListener : public class myPlayer implements ControllerListener { // .... Player player = Manager.createRealizedPlayer(url); player.addControllerListener(this); // .... // And check for EndOfMedia event in the controllerUpdate method: public void controllerUpdate

问题 I am making a media player using JMF, I want to use my own control components Can anyone please help me in making a seek bar for media player so that it can play song according to the slider position. Just suggest me some logic, I can figure out the coding part afterwards if(player!=null){ long durationNanoseconds = (player.getDuration().getNanoseconds()); durationbar.setMaximum((int) player.getDuration().getSeconds()); int duration=(int) player.getDuration().getSeconds(); int percent =

问题 I am creating a simple video player but I'm having problem to show the video file to stream in JPanel. I've created and designed a JFrame and put a square size JPanel inside the form. Here is my codes so far: package SoundsTrip; import java.awt.BorderLayout; import java.awt.Component; import java.io.IOException; import java.net.MalformedURLException; import java.net.URL; import java.util.logging.Level; import java.util.logging.Logger; import javax.media.CannotRealizeException; import javax

问题 I want to extract frames from a video and apply some filters on it such as gabor/hough etc. Which Java library would be perfect for handling all kinds of video encodings? I have been looking at GStreamer, JMF, Xuggler etc. but am unable to decide which one would be the best. I'm also looking to edit the frames and make the video with the new frames. 回答1: If you're looking to do low level operations such as extracting frames and manipulating them, then Xuggler would be the best choice, because

问题 I want to extract frames from a video and apply some filters on it such as gabor/hough etc. Which Java library would be perfect for handling all kinds of video encodings? I have been looking at GStreamer, JMF, Xuggler etc. but am unable to decide which one would be the best. I'm also looking to edit the frames and make the video with the new frames. 回答1: If you're looking to do low level operations such as extracting frames and manipulating them, then Xuggler would be the best choice, because