你好，我有那个灵魂。我使用 Mp4parser 库
public class Mp4ParserWrapper {
public static final String TAG = Mp4ParserWrapper.class.getSimpleName();
public static final int FILE_BUFFER_SIZE = 1024;
/**
* Appends mp4 audio/video from {@code anotherFileName} to {@code mainFileName}.
*/
public static boolean append(String mainFileName, String anotherFileName) {
boolean rvalue = false;
try {
File targetFile = new File(mainFileName);
File anotherFile = new File(anotherFileName);
if (targetFile.exists() && targetFile.length()>0) {
String tmpFileName = mainFileName + ".tmp";
//mainfile=vishal0
//another file=vishal1
//tmpfile=vishal0.tmp
append(mainFileName, anotherFileName, tmpFileName);
copyFile(tmpFileName, mainFileName);
anotherFile.delete();
new File(tmpFileName).delete();
rvalue = true;
} else if ( targetFile.createNewFile() ) {
copyFile(anotherFileName, mainFileName);
anotherFile.delete();
rvalue = true;
}
} catch (IOException e) {
Log.e(TAG, "Append two mp4 files exception", e);
}
return rvalue;
}
public static void copyFile(final String from, final String destination)
throws IOException {
FileInputStream in = new FileInputStream(from);
FileOutputStream out = new FileOutputStream(destination);
copy(in, out);
in.close();
out.close();
}
public static void copy(FileInputStream in, FileOutputStream out) throws IOException {
byte[] buf = new byte[FILE_BUFFER_SIZE];
int len;
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
}
public static void append(
final String firstFile,
final String secondFile,
final String newFile) throws IOException {
final FileInputStream fisOne = new FileInputStream(new File(secondFile));
final FileInputStream fisTwo = new FileInputStream(new File(firstFile));
final FileOutputStream fos = new FileOutputStream(new File(String.format(newFile)));
append(fisOne, fisTwo, fos);
fisOne.close();
fisTwo.close();
fos.close();
}
// FIXME remove deprecated code
public static void append(
final FileInputStream fisOne,
final FileInputStream fisTwo,
final FileOutputStream out) throws IOException {
final Movie movieOne = MovieCreator.build(Channels.newChannel(fisOne));
final Movie movieTwo = MovieCreator.build(Channels.newChannel(fisTwo));
final Movie finalMovie = new Movie();
final List<Track> movieOneTracks = movieOne.getTracks();
final List<Track> movieTwoTracks = movieTwo.getTracks();
for (int i = 0; i <movieOneTracks.size() || i < movieTwoTracks.size(); ++i) {
finalMovie.addTrack(new AppendTrack(movieTwoTracks.get(i), movieOneTracks.get(i)));
}
final IsoFile isoFile = new DefaultMp4Builder().build(finalMovie);
isoFile.getBox(out.getChannel());
}
}
并调用：
Mp4ParserWrapper.append(firstfilename,secondfilename);