我已经根据 VLCj 测试文件编写了下面的简单程序。我想观看视频并将其与音频一起保存到文件中。我现在已经设法使用这些选项，以便文件保存有良好的视频。但是，帧中的图像不会移动，并且保存的视频没有音频。
import com.sun.jna.NativeLibrary;
import java.awt.BorderLayout;
import java.awt.Canvas;
import java.awt.Color;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.WindowEvent;
import java.io.File;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.SwingUtilities;
import javax.swing.WindowConstants;
import uk.co.caprica.vlcj.binding.internal.libvlc_state_t;
import uk.co.caprica.vlcj.component.EmbeddedMediaPlayerComponent;
import uk.co.caprica.vlcj.discovery.NativeDiscovery;
import uk.co.caprica.vlcj.player.MediaPlayerFactory;
import uk.co.caprica.vlcj.player.embedded.EmbeddedMediaPlayer;
import uk.co.caprica.vlcj.player.embedded.videosurface.CanvasVideoSurface;
import uk.co.caprica.vlcj.runtime.RuntimeUtil;
import uk.co.caprica.vlcj.runtime.x.LibXUtil;
import uk.co.caprica.vlcj.version.LibVlcVersion;
import uk.co.caprica.vlcj.binding.LibVlc;
public class Capture {
private final JFrame frame;
private final JPanel contentPane;
private final Canvas canvas;
private static MediaPlayerFactory factory;
private static EmbeddedMediaPlayer mediaPlayer;
private static CanvasVideoSurface videoSurface;
private static String libvlcDir;
private static boolean discovered;
private static Capture capture;
public static void main(final String[] args) {
libvlcDir = "/Applications/VLC.app/Contents/MacOS/lib";
NativeLibrary.addSearchPath(RuntimeUtil.getLibVlcLibraryName(), libvlcDir);
LibXUtil.initialise();
capture = new Capture();
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
capture.start("qtcapture://0x1a11000005ac8509");
}
});
}
public Capture() {
canvas = new Canvas();
canvas.setBackground(Color.black);
contentPane = new JPanel();
contentPane.setBackground(Color.black);
contentPane.setLayout(new BorderLayout());
contentPane.add(canvas, BorderLayout.CENTER);
frame = new JFrame("Capture");
frame.setContentPane(contentPane);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLocation(50, 50);
frame.setSize(800, 600);
factory = new MediaPlayerFactory();
mediaPlayer = factory.newEmbeddedMediaPlayer();
videoSurface = factory.newVideoSurface(canvas);
mediaPlayer.setVideoSurface(videoSurface);
}
private void start(String mrl) {
frame.setVisible(true);
// GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice().setFullScreenWindow(frame);
File dir = new File(System.getProperty("user.home"), "Videos");
dir.mkdirs();
DateFormat df = new SimpleDateFormat("yyyyMMdd-HHmmss");
String fileName = dir.getAbsolutePath() + "/Capture-" + df.format(new Date()) + ".TS";
System.out.println(fileName);
// Tweak the options depending on your encoding requirements and audio
// capture device (ALSA is not likely to work on Windows of course)
//String[] options = {":sout=#transcode{vcodec=mp4v,vb=4096,scale=1,acodec=mpga,ab=128,channels=2,samplerate=44100}:duplicate{dst=file{dst=" + fileName + "},dst=display}", ":input-slave=alsa://hw:0,0"}; /original options - does not work on mac
String options = ":sout=#transcode{vcodec=h264,vb=1024,scale=1,width=360,height=300,acodec=mp4a, aenc=fdkaac,ab=256,channels=6,samplerate=44100}:duplicate{dst=file{dst=" + fileName + "},dst=display}";
mediaPlayer.playMedia(mrl, options); //Records but no audio - also doesn't play in window (still image)
//mediaPlayer.playMedia(mrl); //Just plays in window (no recording)
}
public static boolean setupVLC(){
//Open and read VLC directory from settings file
String msg = "";
discovered=false;
//If file doesn't exist, then guess
File temp = new File(libvlcDir);
String os = System.getProperty("sun.arch.data.model");
if(!temp.exists()){
discovered = setupLibVLC();
if (discovered){
//update settings if found
String tempDir = NativeLibrary.getInstance(RuntimeUtil.getLibVlcLibraryName()).toString();
tempDir = tempDir.substring(tempDir.indexOf("<")+1,tempDir.lastIndexOf("/"));
libvlcDir = tempDir;
System.out.println("VLCdir = " + libvlcDir);
}
}else{
discovered=true;
}
//If still can't find it, ask for pointer to it
temp = new File(libvlcDir);
if(temp.exists() || temp.isDirectory() || discovered){
NativeLibrary.addSearchPath(RuntimeUtil.getLibVlcLibraryName(), libvlcDir);
}else{
msg = "Can't find correct libraries in "+libvlcDir+" Please select the file.";
findDllFolder(msg);
//If still not found then ask for directory
NativeLibrary.addSearchPath(RuntimeUtil.getLibVlcLibraryName(), libvlcDir);
try{
System.out.println("libvlc version = " + LibVlcVersion.getVersion().toString());
discovered=true;
}catch(java.lang.UnsatisfiedLinkError err){
msg= "You may be using the wrong version of VLC. Can't find correct libraries in "+
libvlcDir+
" Please select the file.";
findDllFolder(msg);
}catch(java.lang.NoClassDefFoundError err){
msg = "Can't find correct libraries in "+libvlcDir+" Please select the file.";
findDllFolder(msg);
}
}
//Final throw of the dice to test the work above
try{
System.out.println("libvlc version = " + LibVlcVersion.getVersion().toString());
discovered=true;
}catch(java.lang.UnsatisfiedLinkError err){
discovered = false;
}catch(java.lang.NoClassDefFoundError err){
discovered = false;
}
return discovered;
}
public static void findDllFolder(String msg){
JOptionPane.showMessageDialog(null, msg, "Error", JOptionPane.ERROR_MESSAGE);
JFileChooser fileChooser = new JFileChooser();
int result = fileChooser.showOpenDialog( null );
if ( result == JFileChooser.APPROVE_OPTION ){
libvlcDir = fileChooser.getSelectedFile().toString();
if(System.getProperty("os.name").contains("Mac")){
libvlcDir = libvlcDir + "/Contents/MacOS/lib/";
}else{
libvlcDir = libvlcDir.substring(0,libvlcDir.lastIndexOf("\\"));
libvlcDir = libvlcDir.replace("\\", "\\\\");
}
System.out.println("VLCdir = "+ libvlcDir);
}
}
private static boolean setupLibVLC() {
discovered = new NativeDiscovery().discover();
// discovery()'s method return value is WRONG on Linux
try {
LibVlcVersion.getVersion();
} catch (Exception e) {
System.out.println("error in setupLibVLC");
}
return discovered;
}
}
我在运行时收到的错误消息是：
x264 [信息]：使用 cpu 功能：MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
x264 [信息]：配置文件高，2.1 级
x264 [信息]：最终速率因子：19.03
x264 [信息]：使用 SAR=10/9
x264 [信息]：使用 cpu 功能：MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
x264 [信息]：配置文件高，2.1 级
x264 [警告]：无效 DTS：PTS 小于 DTS
x264 [警告]：无效 DTS：PTS 小于 DTS
x264 [警告]：无效 DTS：PTS 小于 DTS
[0x7f90bb2456c0] 主 vout 显示错误：无法调整显示大小
[0x7f90bb2456c0] 主 vout 显示错误：无法设置在顶部
[h264 @ 0x7f90b4064020] mmco: unref 短故障
[h264 @ 0x7f90b4064620] mmco: unref 短故障
[h264 @ 0x7f90b4063a20] mmco: unref 短故障
[h264 @ 0x7f90b4063a20] mmco: unref 短故障
任何帮助将非常感激！此外，如果有一种“更清洁”的方式来整理我的“SetupVLC”代码，那么我会全力以赴。
谢谢！