我正在使用此代码。我需要合并两个视频。它将所有视频保存在临时文件夹中，但未保存在合并条件下。 Append和DoAppend是我想要合并视频的功能。
public String append(ArrayList<String> trimVideos) {
for (int i = 0; i < trimVideos.size() - 1; i++) {
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
if (i == 0) {
String OutPutFileName = Constants.STORAGE_VIDEO_TEMP_PATH +
File.separator + "APPEND" + "_" + timeStamp + ".mp4";
doAppend(trimVideos.get(0), trimVideos.get(i + 1),OutPutFileName);
Log.e(Constants.TAG, "In First: " + i + " " + OutPutFileName);
} else {
String OutPutFileName = Constants.STORAGE_VIDEO_TEMP_PATH
+ File.separator + "APPEND" + i + "_" + timeStamp + ".mp4";
doAppend(lastAppendOut, trimVideos.get(i + 1), OutPutFileName);
Log.e(Constants.TAG, "In Second: " + i + " " + OutPutFileName);
}
}
Log.e(Constants.TAG, "In End: " + " " + lastAppendOut);
return lastAppendOut;
}
此方法在添加曲目时崩溃了我的应用程序。
private String doAppend(String _firstVideo, String _secondVideo,String _newName) {
try {
Log.e("test", "Stage1");
FileInputStream fis1 = new FileInputStream(_firstVideo);
FileInputStream fis2 = new FileInputStream(_secondVideo);
Movie[] inMovies = new Movie[] {
MovieCreator.build(fis1.getChannel()),MovieCreator.build(fis2.getChannel()) };
List<Track> videoTracks = new LinkedList<Track>();
List<Track> audioTracks = new LinkedList<Track>();
//It returns one item of video and 2 item of video.
for (Movie m : inMovies) {
for (Track t : m.getTracks()) {
if (t.getHandler().equals("soun")) {
audioTracks.add(t);
}
if (t.getHandler().equals("vide")) {
videoTracks.add(t);
}
}
}
Log.e("test", "Stage2");
Movie result = new Movie();
if (audioTracks.size() > 0) {
result.addTrack(new AppendTrack(audioTracks.toArray(new Track[audioTracks.size()])));
}
if (videoTracks.size() > 0) {
result.addTrack(new AppendTrack(videoTracks.toArray(new Track[videoTracks.size()])));
}
IsoFile out = new DefaultMp4Builder().build(result);
Log.e("test", "Stage3");
String filename = _newName;
lastAppendOut = filename;
Log.e(Constants.TAG, "In Append: " + " " + lastAppendOut);
FileOutputStream fos = new FileOutputStream(filename);
FileChannel fco = fos.getChannel();
fco.position(0);
out.getBox(fco);
fco.close();
fos.close();
fis1.close();
fis2.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
Log.e("check", e.getMessage());
}
return _newName;
}
答案 0 :(得分：5)
合并多个视频的代码
public class MergeVideo extends AsyncTask<String, Integer, String> {
@Override
protected void onPreExecute() {
progressDialog = ProgressDialog.show(Video.this,
"Preparing for upload", "Please wait...", true);
// do initialization of required objects objects here
};
@Override
protected String doInBackground(String... params) {
try {
String paths[] = new String[count];
Movie[] inMovies = new Movie[count];
for (int i = 0; i < count; i++) {
paths[i] = path + filename + String.valueOf(i + 1) + ".mp4";
inMovies[i] = MovieCreator.build(new FileInputStream(
paths[i]).getChannel());
}
List<Track> videoTracks = new LinkedList<Track>();
List<Track> audioTracks = new LinkedList<Track>();
for (Movie m : inMovies) {
for (Track t : m.getTracks()) {
if (t.getHandler().equals("soun")) {
audioTracks.add(t);
}
if (t.getHandler().equals("vide")) {
videoTracks.add(t);
}
}
}
Movie result = new Movie();
if (audioTracks.size() > 0) {
result.addTrack(new AppendTrack(audioTracks
.toArray(new Track[audioTracks.size()])));
}
if (videoTracks.size() > 0) {
result.addTrack(new AppendTrack(videoTracks
.toArray(new Track[videoTracks.size()])));
}
BasicContainer out = (BasicContainer) new DefaultMp4Builder()
.build(result);
@SuppressWarnings("resource")
FileChannel fc = new RandomAccessFile(String.format(Environment
.getExternalStorageDirectory() + "/wishbyvideo.mp4"),
"rw").getChannel();
out.writeContainer(fc);
fc.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
String mFileName = Environment.getExternalStorageDirectory()
.getAbsolutePath();
mFileName += "/wishbyvideo.mp4";
filename = mFileName;
return mFileName;
}
@Override
protected void onPostExecute(String value) {
super.onPostExecute(value);
progressDialog.dismiss();
Intent i = new Intent(Video.this, VideoUpload.class);
i.putExtra("videopath", value);
i.putExtra("id", id);
i.putExtra("name", name);
i.putExtra("photo", photo);
startActivity(i);
finish();
}
}
计数只是视频文件计数。
答案 1 :(得分：1)
上述答案完全正确，但只有在您的媒体编码器为H264时才会有效.....
mediaRecorder.setVideoEncoder(VideoEncoder.H264);
快乐编码:)：D
答案 2 :(得分：1)
以上答案仅在编解码器，帧速率和比特率相同时有效。
等级依赖性（该库几乎在每种情况下都可以使用）
implementation 'com.github.yangjie10930:EpMedia:v0.9.5'
代码
private void mergeVideos() {
ArrayList<EpVideo> epVideos = new ArrayList<>();
epVideos.add(new EpVideo (file2)); // Video 1
epVideos.add(new EpVideo (file1)); // Video 2
EpEditor. OutputOption outputOption =new EpEditor.OutputOption(fileOutput);
outputOption.setWidth(720);
outputOption.setHeight(1280);
outputOption.frameRate = 25 ;
outputOption.bitRate = 10 ; //Default
EpEditor.merge(epVideos, outputOption, new OnEditorListener() {
@Override
public void onSuccess () {
Log.d("Status","Success");
}
@Override
public void onFailure () {
}
@Override
public void onProgress ( float progress ) {
// Get processing progress here
Log.d("Progress",""+progress);
}
});
}