Develop Reference

Android - Youtube Player Stop an video at specified time

I'm trying to play an youtube video using Youtube Video Player in my android app from given start_time and end_time.
I used player.loadVideo("_wcs7ixyDbY", 12000), so that my video starts playing after 12 seconds. But I want to end my video at 20 seconds.
I used
player.loadVideo(videoID, 12000);
final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
public void run() {
if(player.getCurrentTimeMillis() <= 20000) {
handler.postDelayed(this, 1000);
} else {
handler.removeCallbacks(this);
player.pause();
}
}
}, 1000);
This option pause my video after 20 seconds.
How to end my video after 20 seconds (not pause)
Thank You

The Android YouTube API provides a method to stop / release the video also:
abstract void release()
Stop any loading or video playback and release any system resources used by this YouTubePlayer.
https://developers.google.com/youtube/android/player/reference/com/google/android/youtube/player/YouTubePlayer

Play music synchronous using 3 MediaPlayer Objects on Android/Eclipse

What i have:
I have implemented three MediaPlayer.Objects in my App.
All Three are created using a thread:
protected void onResume() {
// Threads
mTT1 = new TrackThread(this, R.raw.audiofile1, 1, mHandler);
mTT2 = new TrackThread(this, R.raw.audiofile2, 2, mHandler);
mTT3 = new TrackThread(this, R.raw.audiofile3, 3, mHandler);
// start thread
mTT1.start();
mTT2.start();
mTT3.start();
super.onResume();
}
"simplified" Code in the Thread for creating:
public class TrackThread extends Thread implements OnPreparedListener {
...
...
...
public void run() {
super.run();
try {
mMp.setDataSource(afd.getFileDescriptor(),
afd.getStartOffset(), afd.getDeclaredLength());
mMp.prepare();
} catch (IllegalArgumentException | IllegalStateException
| IOException e) {
Log.e(TAG, "Unable to play audio queue do to exception: "
+ e.getMessage(), e);
}
}
As I read in several Tutorials the "prepare()" methode takes a little bit of time to finish. Therefore i implemented a "Waiting loop" which waits until all MPs are prepared and created.
When "prepare and create" are done i enable the Start button and i want to start all 3 Mediaplayers SIMULTANEOUSLY.
I again use a Thread for dooing so:
public void onClick(View v) {
// Button 1
if (mBtn.getId() == v.getId()) {
mTT1.startMusic();
mTT2.startMusic();
mTT3.startMusic();
}
Code in the thread:
public class TrackThread extends Thread implements OnPreparedListener {
...
...
...
// start
public void startMusic() {
if (mMp == null)
return;
mMp.start();
}
Please note that the code above is not the full code, but it should be enough to define my problem.
What i want, My problem:
All MPs should play their Music in Sync, unfortunately sometimes when i start the music, there is a time delay between them.
The MPs must start at the exact same time as the 3Audio-files must be played simultaneously (and exactly in sync)
What i have already tried:
+) using SoundPool: My Audio-files are to big(5Megabyte and larger) for SoundPool
+) seekTo(msec): i wanted to seek every MP to a Specific time: eg.: 0, but this did not solve the problem.
+) to reach more Programmers i also asked this question on: coderanch.com
I hope somebody can help me!
Thanks in advance

The bottleneck here will certainly be preparing the mediaplayers to play. The Android framework provides an asynchronous method to perform this loading, and so with a bit of synchronization code you should be able to get these audio sources to play at roughly the same time. To keep from sound artifacting, you'll want less than 10ms of latency.
Initialize an atomic counter, C, to the number of things to load.
Use the prepareAsync() functions within MediaPlayer to prepare all three. Immediately after calling prepareAsync, supply a listener using setOnPreparedListener(listener).
Inside this listener, decrement C and check the value. If the value is greater than 0, wait on an object using the java object .wait() function. If the value is equal to 0, call notifyAll() on the object to wake up all of the other mediaplayer prepared-listener callback threads.
public void startMediaPlayers(List<MediaPlayer> mediaPlayers) {
private AtomicInteger counter = new AtomicInteger(mediaPlayers.size());
Object barrier = new Object();
/* start off all media players */
for (MediaPlayer player : mediaPlayers) {
player.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
#Override
public void onPrepared(final MediaPlayer mediaPlayer) {
int value = counter.decrementAndGet();
if (value == 0) {
// all media players are done loading.
// wake up all the ones that are asleep
barrier.notifyAll();
} else {
while (value > 0) {
try {
// wait for everyone else to load
barrier.wait();
} catch (InterruptedException e) {
// ignore
}
}
}
mediaPlayer.start();
callback.success(true);
}
player.prepareAsync();
}
}

As nobody could help me I found a solution on my own. MediaPlayer did not fulfill my requirements but Android JETPlayer in combination with JETCreator did.
CAUTION: Installing Python for using JETCreator is very tricky, therfore
follow this tutorial. And be careful with the versions of python and wxpython, not all versions support the JETCreator.
I used:
Python Version 2.5.4 (python-2.5.4.msi)
wxPython 2.8 (wxPython2.8-win32-unicode-2.8.7.1-py25.exe)
For those who do not know how to implement the Jetplayer watch this video
(at min.5 he starts with programming the Jetplayer).
Unfortunately I do not speak French so I just followed the code which worked for me.
Using Android JETCreator you can create your own JET Files and use them as your resource.
Useful links:
Demo data
Manual
Code/class

android - how to delay an audio file so it starts after a few seconds

I've been wondering if there's a way with either mp or soundpool to delay a sound and make it start exactly after 10 seconds (I have a countdown and want to add a sound effect saying 3,2,1 go! after 10 seconds.)

maybe with a handler?
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
#Override
public void run() {
playSound();
}
}, 10000);

Lags while playing 2 sounds on the same time in timer

I have a small app that basically sets up a timer and plays sets of 2 sounds one after another.
I've tried 2 timers, because I wanted both sounds to start exactly at the same time each time. I gave the app 500ms for setting both timers before they start
Calendar cal = Calendar.getInstance();
Date start = new Date(cal.getTime().getTime() + 500);
timerTask1 = new TimerTask() { //1st timer
#Override
public void run() {
soundManager.playSound(1);
}
};
timer1 = new Timer();
timer1.schedule(timerTask1, start, 550);
timerTask2 = new TimerTask() { //2nd timer
#Override
public void run() {
soundManager.playSound(2);
}
};
timer2 = new Timer();
timer2.schedule(timerTask2, start, 550);
}
soundManager is a SoundManager object which is based on this tutorial. Thew only change I've made was decreasing number of avalible streams from 20 to 2 since I play only 2 sounds at the same time.
Now the problem. It's not playing at the equal rate neither on my Motorola RAZR or the emulator. The app slows sometimes, making a longer brake than desired. I can't let that happen. What could be wrong here?
I'm using very short sounds in OGG format
EDIT:
I've made some research. Used 2 aproaches. I was measuring milisecond distances between sound was fired. Refresh rate was 500 ms.
1st aproach was TimerTask - it is a big fail. It started at 300ms, then was constantly growing, and after some time (2 mins) stabilized at 497ms which would be just fine if it started as that.
2nd aproach was while loop on AsyncTask - it was giving me outputs from 475 to 500ms which is better than TimerTask but still inaccurate
At the end none of aproach was playing smoothly. There were always lags

I know it may be a little too much, but you could try a different implementation of SoundPool:
public class Sound {
SoundPool soundPool;
int soundID;
public Sound(SoundPool soundPool, int soundID) {
this.soundPool = soundPool;
this.soundID = soundID;
}
public void play(float volume) {
soundPool.play(soundID, volume, volume, 0, 0, 1);
}
public void dispose() {
soundPool.unload(soundID);
}
}
To use it you can do something like this:
SoundPool soundPool = new SoundPool(20, AudioManager.STREAM_MUSIC, 0);
AssetFileDescriptor assetFileDescriptor = activity.getAssets().openFd(fileName);
int soundID = soundPool.load(assetFileDescriptor, 0);
Sound sound = new Sound(soundPool, soundID);
And then play:
sound.play(volume);
P.S. If the problem persists even with this code, post a comment and I'll get back to you.

Are you using SoundPool? It is quicker than MediaPlayer. The best chance of getting the two sounds together is when playing them on the same thread.

How to make video ads disappear after xx seconds in Android?

I am making a video ads, now i can play video from internet, redirect to new url when user tap to the video.
But i dont know how to make Skip button, and stop , disappear my video ads after some seconds
I search google for a long time, but i cant get the solution!
can you give me some advice please?

I found the solution in this way:
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
public void run() {
if(mVideoViewer.isPlaying()){
mVideoViewer.stopPlayback();
}
// Do something
Log.i(getCallingPackage(), "====== Auto stop ===========");
}
}, 15000);
Stop play video after 15 seconds

Try this to stop playing video.
Timer timer=new Timer();
timer.schedule(new TimerTask() {
#Override
public void run() {
if (videoView.isPlaying())
{
videoView.stopPlayback();
}
}
},10000);