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The Slip - Artworks
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Texte
Autres articles (31)
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La sauvegarde automatique de canaux SPIP
1er avril 2010, parDans le cadre de la mise en place d’une plateforme ouverte, il est important pour les hébergeurs de pouvoir disposer de sauvegardes assez régulières pour parer à tout problème éventuel.
Pour réaliser cette tâche on se base sur deux plugins SPIP : Saveauto qui permet une sauvegarde régulière de la base de donnée sous la forme d’un dump mysql (utilisable dans phpmyadmin) mes_fichiers_2 qui permet de réaliser une archive au format zip des données importantes du site (les documents, les éléments (...) -
Script d’installation automatique de MediaSPIP
25 avril 2011, parAfin de palier aux difficultés d’installation dues principalement aux dépendances logicielles coté serveur, un script d’installation "tout en un" en bash a été créé afin de faciliter cette étape sur un serveur doté d’une distribution Linux compatible.
Vous devez bénéficier d’un accès SSH à votre serveur et d’un compte "root" afin de l’utiliser, ce qui permettra d’installer les dépendances. Contactez votre hébergeur si vous ne disposez pas de cela.
La documentation de l’utilisation du script d’installation (...) -
Automated installation script of MediaSPIP
25 avril 2011, parTo overcome the difficulties mainly due to the installation of server side software dependencies, an "all-in-one" installation script written in bash was created to facilitate this step on a server with a compatible Linux distribution.
You must have access to your server via SSH and a root account to use it, which will install the dependencies. Contact your provider if you do not have that.
The documentation of the use of this installation script is available here.
The code of this (...)
Sur d’autres sites (6016)
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Catch if the Java proccess crashed
17 janvier 2012, par VSheyanovI run java process to convert video using ffmpeg.exe.
Runtime rt = Runtime.getRuntime();
String cmd = FFMPEGFULLPATH + " -y -i " + '"' + mpeg4File + '"' + " -vcodec libx264 -vsync 2 " + '"' + H264file + '"';
Process pr = rt.exec(cmd);
ThreadedTranscoderIO errorHandler = new ThreadedTranscoderIO(pr.getErrorStream(), "Error Stream");
errorHandler.start();
ThreadedTranscoderIO inputHandler = new ThreadedTranscoderIO(pr.getInputStream(), "Output Stream");
inputHandler.start();
try {
pr.waitFor();
} catch (InterruptedException e) {
LiveApplication.logger.info("Some shit happens during convertation 2 ");
throw new IOException("UseTranscoderBlocking - Run_FFMPEG - process interrupted " + e);
}But when the process started, sometimes especially with big files, but not always i get this windows message :
This happens only on Windows server 2008 and didn't happened on Windows 7.
I have 2 questions :
- Why this process fails ?
- Can I catch this fail in Java, close
this window and continue thread execution (maybe I'll restart this
proccess).
Thanks !
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encoding .avi file from bytearray using ffmpeg in javacv or java
24 janvier 2012, par Ashwin YakkundiI have converted an .avi file into byte[]. What I need to do is to convert the byte[] back to the original .avi file in java or javacv preferably using ffmpeg.
The following is the code I used for conversion from .avi into byte[]
import com.googlecode.javacv.cpp.opencv_core.IplImage;
import com.googlecode.javacv.CanvasFrame;
import com.googlecode.javacv.FFmpegFrameGrabber;
import java.io.BufferedInputStream;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
public class VideoDemoTest1{
public static void main(String[] args) throws Exception {
String filename = "/home/ashwin/Desktop/cow.avi";
FileInputStream fis = new FileInputStream (filename);
DataInputStream dis = new DataInputStream(fis);
int length = dis.available();
System.out.println("length of InputStream = " + length);
byte[] videoByteArray = new byte[(int) length];
// Read in the bytes
int offset = 0;
int numRead = 0;
while (offset < videoByteArray.length
&& (numRead = dis.read(videoByteArray, offset, videoByteArray.length - offset)) >= 0) {
offset += numRead;
}
System.out.println("length of videoByteArray is " + videoByteArray.length);
}
} -
java.lang.ExceptionInInitializerError in FFmpeg Test Demo
16 mars 2016, par Mehul RanparaI have a demo called FFMpegTest of Android which i downloaded from here..https://github.com/appunite/AndroidFFmpeg..and i also have Library file of FFMpeg which is in this demo and i am using this Library in FFmpegTest..Now when i running..it gives java.lang.ExceptionInInitializerError.. Anyone have an idea about this..please share with me..Thanx in Advance..
which is in...VideoActivity.java
public class VideoActivity extends Activity implements OnClickListener,FFmpegListener, OnSeekBarChangeListener, OnItemSelectedListener
{
private FFmpegPlayer mpegPlayer;
private static boolean isSurfaceView = true;
protected boolean mPlay = false;
private View controlsView;
private View loadingView;
private SeekBar seekBar;
public View videoView;
private Button playPauseButton;
private boolean mTracking = false;
private View streamsView;
private Spinner languageSpinner;
private int languageSpinnerSelectedPosition = 0;
private Spinner subtitleSpinner;
private int subtitleSpinnerSelectedPosition = 0;
private StreamAdapter languageAdapter;
private StreamAdapter subtitleAdapter;
private FFmpegStreamInfo audioStream = null;
private FFmpegStreamInfo subtitleStream = null;
@Override
public void onCreate(Bundle savedInstanceState)
{
this.getWindow().requestFeature(Window.FEATURE_NO_TITLE);
getWindow().setFormat(PixelFormat.RGB_565);
getWindow().clearFlags(WindowManager.LayoutParams.FLAG_DITHER);
super.onCreate(savedInstanceState);
this.getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
this.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
this.getWindow().setBackgroundDrawable(null);
this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
if (isSurfaceView)
VideoActivity.this.setContentView(R.layout.video_surfaceview);
else
VideoActivity.this.setContentView(R.layout.video_view);
seekBar = (SeekBar) this.findViewById(R.id.seek_bar);
seekBar.setOnSeekBarChangeListener(this);
playPauseButton = (Button) this.findViewById(R.id.play_pause);
playPauseButton.setOnClickListener(this);
controlsView = this.findViewById(R.id.controls);
streamsView = this.findViewById(R.id.streams);
loadingView = this.findViewById(R.id.loading_view);
languageSpinner = (Spinner) this.findViewById(R.id.language_spinner);
subtitleSpinner = (Spinner) this.findViewById(R.id.subtitle_spinner);
languageAdapter = new StreamAdapter(this,android.R.layout.simple_spinner_item,new ArrayList<ffmpegstreaminfo>(), StreamAdapterType.AUDIO);
languageAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
languageSpinner.setAdapter(languageAdapter);
languageSpinner.setOnItemSelectedListener(this);
subtitleAdapter = new StreamAdapter(this,android.R.layout.simple_spinner_item,new ArrayList<ffmpegstreaminfo>(), StreamAdapterType.SUBTITLE);
subtitleAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
subtitleSpinner.setAdapter(subtitleAdapter);
subtitleSpinner.setOnItemSelectedListener(this);
try
{
videoView = this.findViewById(R.id.video_view);
//VideoActivity.this.mpegPlayer = new FFmpegPlayer((FFmpegDisplay)videoView, VideoActivity.this);
this.mpegPlayer = new FFmpegPlayer((FFmpegDisplay)videoView, this);
this.mpegPlayer.setMpegListener(this);
setDataSource();
//Too
}
catch (Exception e)
{
e.printStackTrace();
}
}
private static enum StreamAdapterType
{
AUDIO, SUBTITLE
};
private static class StreamAdapter extends ArrayAdapter<ffmpegstreaminfo>
{
private final StreamAdapterType adapterType;
public StreamAdapter(Context context, int textViewResourceId,List<ffmpegstreaminfo> objects, StreamAdapterType adapterType)
{
super(context, textViewResourceId, objects);
this.adapterType = adapterType;
}
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
TextView view = (TextView) super.getView(position, convertView, parent);
FFmpegStreamInfo item = getItem(position);
Locale locale = item.getLanguage();
String formatter;
if (StreamAdapterType.AUDIO.equals(adapterType))
{
formatter = getContext().getString(R.string.language_spinner_drop_down);
}
else
{
formatter = getContext().getString(R.string.subtitle_spinner_drop_down);
}
String languageName = locale == null ? getContext().getString(R.string.unknown) : locale.getDisplayLanguage();
String text = String.format(formatter, languageName);
view.setText(text);
return view;
}
@Override
public View getDropDownView(int position, View convertView, ViewGroup parent)
{
CheckedTextView view = (CheckedTextView) super.getDropDownView(position, convertView, parent);
FFmpegStreamInfo item = getItem(position);
Locale locale = item.getLanguage();
String languageName = locale == null ? getContext().getString(R.string.unknown) : locale.getDisplayLanguage();
view.setText(languageName);
return view;
}
}
@Override
protected void onPause() {
super.onPause();
};
@Override
protected void onResume() {
super.onResume();
}
@Override
protected void onDestroy()
{
super.onDestroy();
this.mpegPlayer.setMpegListener(null);
this.mpegPlayer.stop();
stop();
}
private void setDataSource()
{
Log.d("url", "checin");
HashMap params = new HashMap();
// set font for ass
File assFont = new File(Environment.getExternalStorageDirectory(),"Roboto.ttf");
params.put("ass_default_font_path", assFont.getAbsolutePath());
Intent intent = getIntent();
String url = intent.getStringExtra(AppConstants.VIDEO_PLAY_ACTION_EXTRA_URL);
Log.d("url", url);
if (url == null)
{
throw new IllegalArgumentException(String.format("\"%s\" did not provided", AppConstants.VIDEO_PLAY_ACTION_EXTRA_URL));
}
if (intent.hasExtra(AppConstants.VIDEO_PLAY_ACTION_EXTRA_ENCRYPTION_KEY))
{
params.put("aeskey", intent.getStringExtra(AppConstants.VIDEO_PLAY_ACTION_EXTRA_ENCRYPTION_KEY));
}
this.playPauseButton.setBackgroundResource(android.R.drawable.ic_media_play);
this.playPauseButton.setEnabled(true);
mPlay = false;
mpegPlayer.setDataSource(url, params, null, audioStream,subtitleStream);
}
@Override
public void onClick(View v)
{
int viewId = v.getId();
switch (viewId)
{
case R.id.play_pause:
resumePause();
return;
default:
throw new RuntimeException();
}
}
@Override
public void onFFUpdateTime(int currentTimeS, int videoDurationS, boolean isFinished)
{
if (!mTracking)
{
seekBar.setMax(videoDurationS);
seekBar.setProgress(currentTimeS);
}
if (isFinished)
{
new AlertDialog.Builder(this)
.setTitle(R.string.dialog_end_of_video_title)
.setMessage(R.string.dialog_end_of_video_message)
.setCancelable(true).show();
}
}
@Override
public void onFFDataSourceLoaded(FFmpegError err, FFmpegStreamInfo[] streams)
{
if (err != null) {
String format = getResources().getString(
R.string.main_could_not_open_stream);
String message = String.format(format, err.getMessage());
Builder builder = new AlertDialog.Builder(VideoActivity.this);
builder.setTitle(R.string.app_name)
.setMessage(message)
.setOnCancelListener(
new DialogInterface.OnCancelListener() {
@Override
public void onCancel(DialogInterface dialog) {
VideoActivity.this.finish();
}
}).show();
return;
}
playPauseButton.setBackgroundResource(android.R.drawable.ic_media_play);
playPauseButton.setEnabled(true);
this.controlsView.setVisibility(View.VISIBLE);
this.streamsView.setVisibility(View.VISIBLE);
this.loadingView.setVisibility(View.GONE);
this.videoView.setVisibility(View.VISIBLE);
languageAdapter.clear();
subtitleAdapter.clear();
for (FFmpegStreamInfo streamInfo : streams) {
CodecType mediaType = streamInfo.getMediaType();
if (FFmpegStreamInfo.CodecType.AUDIO.equals(mediaType)) {
languageAdapter.add(streamInfo);
} else if (FFmpegStreamInfo.CodecType.SUBTITLE.equals(mediaType)) {
subtitleAdapter.add(streamInfo);
}
}
}
private void displaySystemMenu(boolean visible) {
if (Build.VERSION.SDK_INT >= 14) {
displaySystemMenu14(visible);
} else if (Build.VERSION.SDK_INT >= 11) {
displaySystemMenu11(visible);
}
}
@SuppressWarnings("deprecation")
@TargetApi(11)
private void displaySystemMenu11(boolean visible) {
if (visible) {
this.videoView.setSystemUiVisibility(View.STATUS_BAR_VISIBLE);
} else {
this.videoView.setSystemUiVisibility(View.STATUS_BAR_HIDDEN);
}
}
@TargetApi(14)
private void displaySystemMenu14(boolean visible) {
if (visible) {
this.videoView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE);
} else {
this.videoView
.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE);
}
}
public void resumePause() {
this.playPauseButton.setEnabled(false);
if (mPlay) {
mpegPlayer.pause();
} else {
mpegPlayer.resume();
displaySystemMenu(true);
}
mPlay = !mPlay;
}
@Override
public void onFFResume(NotPlayingException result) {
this.playPauseButton
.setBackgroundResource(android.R.drawable.ic_media_pause);
this.playPauseButton.setEnabled(true);
displaySystemMenu(false);
mPlay = true;
}
@Override
public void onFFPause(NotPlayingException err) {
this.playPauseButton
.setBackgroundResource(android.R.drawable.ic_media_play);
this.playPauseButton.setEnabled(true);
mPlay = false;
}
private void stop() {
this.controlsView.setVisibility(View.GONE);
this.streamsView.setVisibility(View.GONE);
this.loadingView.setVisibility(View.VISIBLE);
this.videoView.setVisibility(View.INVISIBLE);
}
@Override
public void onFFStop() {
}
@Override
public void onFFSeeked(NotPlayingException result)
{
// if (result != null)
// throw new RuntimeException(result);
}
@Override
public void onProgressChanged(SeekBar seekBar, int progress,boolean fromUser)
{
if (fromUser)
{
mpegPlayer.seek(progress);
}
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
mTracking = true;
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
mTracking = false;
}
private void setDataSourceAndResumeState() {
int progress = seekBar.getProgress();
setDataSource();
mpegPlayer.seek(progress);
mpegPlayer.resume();
}
@Override
public void onItemSelected(AdapterView<?> parentView,
View selectedItemView, int position, long id) {
FFmpegStreamInfo streamInfo = (FFmpegStreamInfo) parentView
.getItemAtPosition(position);
if (parentView == languageSpinner) {
if (languageSpinnerSelectedPosition != position) {
languageSpinnerSelectedPosition = position;
audioStream = streamInfo;
setDataSourceAndResumeState();
}
} else if (parentView == subtitleSpinner) {
if (subtitleSpinnerSelectedPosition != position) {
subtitleSpinnerSelectedPosition = position;
subtitleStream = streamInfo;
setDataSourceAndResumeState();
}
} else {
throw new RuntimeException();
}
}
@Override
public void onNothingSelected(AdapterView<?> parentView) {
// if (parentView == languageSpinner) {
// audioStream = null;
// } else if (parentView == subtitleSpinner) {
// subtitleStream = null;
// } else {
// throw new RuntimeException();
// }
// play();
}
}
</ffmpegstreaminfo></ffmpegstreaminfo></ffmpegstreaminfo></ffmpegstreaminfo>and this is my logcat :
01-22 15:29:15.302: E/AndroidRuntime(1560): FATAL EXCEPTION: main
01-22 15:29:15.302: E/AndroidRuntime(1560): java.lang.ExceptionInInitializerError
01-22 15:29:15.302: E/AndroidRuntime(1560): at java.lang.Class.newInstanceImpl(Native Method)
01-22 15:29:15.302: E/AndroidRuntime(1560): at java.lang.Class.newInstance(Class.java:1319)
01-22 15:29:15.302: E/AndroidRuntime(1560): at android.app.Instrumentation.newActivity(Instrumentation.java:1023)
01-22 15:29:15.302: E/AndroidRuntime(1560): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1871)
01-22 15:29:15.302: E/AndroidRuntime(1560): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
01-22 15:29:15.302: E/AndroidRuntime(1560): at android.app.ActivityThread.access$600(ActivityThread.java:123)
01-22 15:29:15.302: E/AndroidRuntime(1560): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
01-22 15:29:15.302: E/AndroidRuntime(1560): at android.os.Handler.dispatchMessage(Handler.java:99)
01-22 15:29:15.302: E/AndroidRuntime(1560): at android.os.Looper.loop(Looper.java:137)
01-22 15:29:15.302: E/AndroidRuntime(1560): at android.app.ActivityThread.main(ActivityThread.java:4424)
01-22 15:29:15.302: E/AndroidRuntime(1560): at java.lang.reflect.Method.invokeNative(Native Method)
01-22 15:29:15.302: E/AndroidRuntime(1560): at java.lang.reflect.Method.invoke(Method.java:511)
01-22 15:29:15.302: E/AndroidRuntime(1560): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
01-22 15:29:15.302: E/AndroidRuntime(1560): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
01-22 15:29:15.302: E/AndroidRuntime(1560): at dalvik.system.NativeStart.main(Native Method)
01-22 15:29:15.302: E/AndroidRuntime(1560): Caused by: java.lang.UnsatisfiedLinkError: Couldn't load ffmpeg: findLibrary returned null
01-22 15:29:15.302: E/AndroidRuntime(1560): at java.lang.Runtime.loadLibrary(Runtime.java:365)
01-22 15:29:15.302: E/AndroidRuntime(1560): at java.lang.System.loadLibrary(System.java:535)
01-22 15:29:15.302: E/AndroidRuntime(1560): at roman10.ffmpegTest.VideoBrowser.<clinit>(VideoBrowser.java:37)
01-22 15:29:15.302: E/AndroidRuntime(1560): ... 15 more
</clinit>
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