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La conservation du net art au musée. Les stratégies à l’œuvre
26 mai 2011
Mis à jour : Juillet 2013
Langue : français
Type : Texte
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Publier sur MédiaSpip
13 juin 2013Puis-je poster des contenus à partir d’une tablette Ipad ?
Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir -
Use, discuss, criticize
13 avril 2011, parTalk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
A discussion list is available for all exchanges between users. -
Encoding and processing into web-friendly formats
13 avril 2011, parMediaSPIP automatically converts uploaded files to internet-compatible formats.
Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
All uploaded files are stored online in their original format, so you can (...)
Sur d’autres sites (8939)
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Is there a case where I can not create a file if I run a lot of threads ? ( feat. Ffmpeg, thread)
26 juin 2018, par JunburgI am now creating an app that will duet with the singer. We use a thread (mAudioPlayer) that outputs background music, a vAudioPlayer that prints the voice of the singer, a mRecordThread that records the voice of the user, and a thread that weaves and attaches each file (mp3ConcatThread).
It works by stopping the singer’s voice while recording background music and recording by the user. Of course, when the user does not record, the singer’s voice is output. In this way, each section must be made into an mp3 file and merged into a single file. However, it often happens that files that do not record and merge properly are created.
Audio processing is done using Ffmpeg. I guess the following error might be the reason.
06-26 21:37:11.084 13017-13017/com.softcode.kihnoplay I/Choreographer: Skipped 72 frames! The application may be doing too much work on its main thread.Could not generate a file because of this kind of error ?
If you know the answer to this question, please answer. Thank you.
Below are related codes. For more information, please leave a comment.
Because the code is too long, I’ve included only the code that looks like it’s needed.Record Thread.class
public class Record_Thread {
private static final String LOG_TAG = Record_Thread.class.getSimpleName();
private static final int SAMPLE_RATE = 44100;
private int bufferSize = 0;
private String currentOutFile = null;
private Context context;
byte RECORDER_BPP = 16;
public Record_Thread(Record_interface listener) {
mListener = listener;
Player.currentCreateFileName = SmcInfo.APPDIRPATH + "/ucc/" + Player.getCurrentTime(false);
currentOutFile = Player.currentCreateFileName + ".pcm";
}
public Record_Thread(Record_interface listener, Context context) {
mListener = listener;
RecordActivity.currentCreateFileName = SmcInfo.APPDIRPATH + "/ucc/" + RecordActivity.getCurrentTime(false);
currentOutFile = RecordActivity.currentCreateFileName + ".pcm";
this.context = context;
}
private boolean isSampleTranspo;
private boolean isRecording;
public boolean isSharding = false;
private Record_interface mListener;
private Thread mThread;
public boolean recording() {
return mThread != null;
}
public void setSampleTranspo(boolean booleanValue) {
this.isSampleTranspo = booleanValue;
}
public boolean getSampleTranspo() {
return this.isSampleTranspo;
}
long startpoint = 0;
boolean posWrite = false;
public void startRecording() {
if (mThread != null)
return;
isRecording = true;
mThread = new Thread(new Runnable() {
@Override
public void run() {
record();
}
});
mThread.start();
}
public void stopRecording() {
if (mThread == null)
return;
isRecording = false;
mThread = null;
posWrite = false;
startpoint = 0;
}
public void startFileWrite(long startpoint) {
this.startpoint = startpoint;
this.posWrite = true;
}
public void stopFileWrite() {
this.posWrite = false;
}
private void record() {
try {
Log.v(LOG_TAG, "Start");
android.os.Process.setThreadPriority(android.os.Process.THREAD_PRIORITY_AUDIO);
bufferSize = AudioRecord.getMinBufferSize(SAMPLE_RATE, AudioFormat.CHANNEL_IN_STEREO, AudioFormat.ENCODING_PCM_16BIT);
if (bufferSize == AudioRecord.ERROR || bufferSize == AudioRecord.ERROR_BAD_VALUE) {
bufferSize = SAMPLE_RATE * 2;
}
short[] audioBuffer = new short[bufferSize];
short[] audioZero = new short[bufferSize];
AudioRecord record = new AudioRecord(MediaRecorder.AudioSource.MIC, SAMPLE_RATE, AudioFormat.CHANNEL_IN_STEREO, AudioFormat.ENCODING_PCM_16BIT, bufferSize);
if (record.getState() != AudioRecord.STATE_INITIALIZED) {
Log.e(LOG_TAG, "Audio Record can't initialize!");
return;
}
record.startRecording();
Log.v(LOG_TAG, "Start recording");
long shortsRead = 0;
int readsize = 0;
File tempFile = new File(currentOutFile);
if (tempFile.exists())
tempFile.delete();
FileOutputStream fos = new FileOutputStream(currentOutFile);
byte[] audiodata = new byte[bufferSize];
while (isRecording && record != null) {
readsize = record.read(audiodata, 0, audiodata.length);
if (AudioRecord.ERROR_INVALID_OPERATION != readsize && fos != null) {
try {
if (readsize > 0 && readsize <= audiodata.length) {
fos.write(audiodata, 0, readsize);//TypeCast.shortToByte(audioBuffer)
fos.flush();
}
} catch (Exception ex) {
Log.e("AudioRecorder", ex.getMessage());
}
}
ShortBuffer sb = ByteBuffer.wrap(audiodata).order(ByteOrder.LITTLE_ENDIAN).asShortBuffer();
short[] samples = new short[sb.limit()];
sb.get(samples);
if (isSampleTranspo) {
mListener.onAudioDataReceived(samples);
} else {
mListener.onAudioDataReceived(audioZero);
}
if (posWrite) {
FileOutputStream pos = null;
try {
if (startpoint > 0) {
if (context instanceof RecordActivity) {
pos = new FileOutputStream(RecordActivity.currentCreateFileName.replaceAll("/ucc/", "/tmp/") + "_" + caltime(String.valueOf((int) (startpoint / 1000)), false) + "_uv.pcm", true);/////파일에 이어서 쓰기
Log.d(TAG, "record: " + pos.toString());
} else {
pos = new FileOutputStream(Player.currentCreateFileName.replaceAll("/ucc/", "/tmp/") + "_" + caltime(String.valueOf((int) (startpoint / 1000)), false) + "_uv.pcm", true);/////파일에 이어서 쓰기
}
}
pos.write(audiodata);
pos.flush();
} catch (Exception e) {
e.printStackTrace();
} finally {
pos.close();
pos = null;
}
}
}
if (fos != null)
fos.close();
mListener.onRecordEnd();
record.stop();
record.release();
} catch (IOException e) {
Log.e("AudioRecorder", e.getMessage());
}
}
private String caltime(String sMillis, boolean timeFormat) {
double dMillis = 0;
int minutes = 0;
int seconds = 0;
int millis = 0;
String sTime;
try {
dMillis = Double.parseDouble(sMillis);
} catch (Exception e) {
System.out.println(e.getMessage());
}
seconds = (int) (dMillis / 1000) % 60;
millis = (int) (dMillis % 1000);
if (seconds > 0) {
minutes = (int) (dMillis / 1000 / 60) % 60;
if (minutes > 0) {
if (timeFormat)
sTime = String.format("%02d:%02d.%d", minutes, seconds, millis);
else
sTime = String.format("%02d%02d%d", minutes, seconds, millis);
} else {
if (timeFormat)
sTime = String.format("%02d:%02d.%d", 0, seconds, millis);
else
sTime = String.format("%02d%02d%d", 0, seconds, millis);
}
} else {
if (timeFormat)
sTime = String.format("%02d:%02d.%d", 0, 0, millis);
else
sTime = String.format("%02d%02d%d", 0, 0, millis);
}
return sTime;
}
}RecordActivity.class
public class RecordActivity extends AppCompatActivity implements Player_interface, SeekBar.OnSeekBarChangeListener {
private static final String TAG = "RecordActivity";
public Context context = this;
private LinearLayout recordLayout;
private RelativeLayout recordBtn, saveBtn;
private CircleImageView userImg, artistImg;
private TextView songTitleTxt, playTimeTxt, progressTimeTxt;
private BlurBitmap blurBitmap;
private SeekBar seekBar;
private ImageView micBg1, micBg2;
private String assPath;
private String ampPath;
private int deviceWidth, deviceHeight;
public static AssRenderView assView;
public static LinearLayout lyricsLayout;
public static int lyricsWidth, lyricsHeight, layoutWidth;
public static LinearLayout.LayoutParams assViewParams;
public static String currentCreateFileName = null;
public static String mrPath;
public static String voicePath;
private String recMusicPath;
Player_Thread mAudioPlayer = null, vAudioPlayer = null, testPlayer = null;
private Record_Thread mRecordThread;
public static Mp3Concat_Thread mMp3ConcatThread;
long lastDuration = 0L;
private boolean isSeekbarTouch = false;
private ArrayList<long> combineList;
CNetProgressdialog createMp3Dialog;
int bufferSize = 7104;
int SAMPLE_RATE = 44100;
int RECORDER_SAMPLERATE = 44100;
byte RECORDER_BPP = 16;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
removeDir(SmcInfo.APPDIRPATH + "/tmp");
setContentView(R.layout.activity_record_phone);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
Window window = getWindow();
window.addFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);
window.addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);
}
recordLayout = (LinearLayout) findViewById(R.id.record_layout);
userImg = (CircleImageView) findViewById(R.id.user_img);
artistImg = (CircleImageView) findViewById(R.id.artist_img);
songTitleTxt = (TextView) findViewById(R.id.song_title_txt);
progressTimeTxt = (TextView) findViewById(R.id.progress_time_txt);
playTimeTxt = (TextView) findViewById(R.id.play_time_txt);
recordBtn = (RelativeLayout) findViewById(R.id.record_btn);
saveBtn = (RelativeLayout) findViewById(R.id.save_btn);
seekBar = (SeekBar) findViewById(R.id.seek_bar);
micBg1 = (ImageView) findViewById(R.id.mic_bg_small);
micBg2 = (ImageView) findViewById(R.id.mic_bg_big);
createMp3Dialog = new CNetProgressdialog(this);
GradientDrawable drawable = new GradientDrawable();
drawable.setColors(new int[]{
Color.parseColor("#32c49b"),
Color.parseColor("#19b2c3")
});
Intent intent = getIntent();
final String artistImgPath = intent.getStringExtra("artistImgPath");
final String songTitle = intent.getStringExtra("songTitle");
assPath = intent.getStringExtra("assPath");
ampPath = intent.getStringExtra("ampPath");
String playTime = intent.getStringExtra("playTime");
blurBitmap = new BlurBitmap();
songTitleTxt.setText(songTitle);
playTimeTxt.setText(playTime);
final Bitmap artistImgBitmap = blurBitmap.toBitmap(artistImgPath);
final Bitmap userImgBitmap = BitmapFactory.decodeResource(context.getResources(), R.drawable.dummy_artist_2);
final Bitmap userBlurImg = blurBitmap.blurRenderScript(this, userImgBitmap, 25);
final Bitmap artistBlurImg = blurBitmap.blurRenderScript(this, artistImgBitmap, 25);
artistImg.setImageBitmap(artistImgBitmap);
userImg.setImageBitmap(userBlurImg);
drawable.setGradientType(GradientDrawable.LINEAR_GRADIENT);
drawable.setOrientation(GradientDrawable.Orientation.TOP_BOTTOM);
recordLayout.setBackground(drawable);
play(ampToMp3(ampPath));
mRecordThread = new Record_Thread(new Record_interface() {
@Override
public void onAudioDataReceived(short[] data) {
}
@Override
public void onRecordEnd() {
}
}, context);
mMp3ConcatThread = new Mp3Concat_Thread(new Mp3Concat_interface() {
@Override
public void onAudioDataReceived(short[] data) {
}
@Override
public void onRecordEnd() {
createMp3Dialog.dismiss();
startPrelisteningActivity(recMusicPath, songTitle);
}
}, this);
if (!mRecordThread.recording()) {
mRecordThread.startRecording();
}
final Animation animZoomIn = AnimationUtils.loadAnimation(this, R.anim.zoom_in);
final Animation animZoomOut = AnimationUtils.loadAnimation(this, R.anim.zoom_out);
final Animation animMic1 = AnimationUtils.loadAnimation(this, R.anim.bg_mic_anim_1_phone);
final Animation animMic2 = AnimationUtils.loadAnimation(this, R.anim.bg_mic_anim_2_phone);
artistImg.startAnimation(animZoomIn);
combineList = new ArrayList<long>();
recordBtn.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
switch (motionEvent.getAction()) {
case MotionEvent.ACTION_DOWN: {
long currentDuration = vAudioPlayer.getCurrentDuration();
// 녹음 시작 ( combineList 사이즈가 짝수일 때 )
if (mRecordThread != null) {
if (combineList.size() % 2 == 0) {
mRecordThread.startFileWrite(currentDuration);
combineList.add(currentDuration);
}
vAudioPlayer.setSampleTranspo(true);
mRecordThread.setSampleTranspo(true);
}
}
micBg1.setVisibility(View.VISIBLE);
micBg2.setVisibility(View.VISIBLE);
micBg1.startAnimation(animMic1);
micBg2.startAnimation(animMic2);
userImg.setImageBitmap(userImgBitmap);
userImg.startAnimation(animZoomIn);
artistImg.setImageBitmap(artistBlurImg);
artistImg.startAnimation(animZoomOut);
break;
case MotionEvent.ACTION_UP: {
long currentDuration = vAudioPlayer.getCurrentDuration();
if (mRecordThread != null) {
if (combineList.size() % 2 == 1) {
mRecordThread.startRecording();
mRecordThread.stopFileWrite();
File waveFile = new File(RecordActivity.currentCreateFileName.replaceAll("/ucc/", "/tmp/")
+ "_" + caltime(combineList.get(combineList.size() - 1) / 1000, false) + "_uv.pcm");
if (waveFile.exists()) {
copyWaveFile(RecordActivity.currentCreateFileName.replaceAll("/ucc/", "/tmp/") + "_" + caltime(combineList.get(combineList.size() - 1) / 1000, false) + "_uv.pcm",
RecordActivity.currentCreateFileName.replaceAll("/ucc/", "/tmp/") + "_" + caltime(combineList.get(combineList.size() - 1) / 1000, false) + "_u0.wav");
Log.d(TAG, "onTouch: " + currentCreateFileName);
if (mMp3ConcatThread != null) {
mMp3ConcatThread.startCombine(null, 3333333333333333333L, combineList.get(combineList.size() - 1), currentDuration);
}
}
combineList.add(currentDuration);
Log.d(TAG, "onTouch: " + combineList.size());
if (combineList.size() == 2) {
mMp3ConcatThread.startCombine(null, 0, combineList.get(combineList.size() - 2), currentDuration);
} else {
mMp3ConcatThread.startCombine(null, combineList.get(combineList.size() - 3), combineList.get(combineList.size() - 2), currentDuration);
}
}
vAudioPlayer.setSampleTranspo(false);
mRecordThread.setSampleTranspo(false);
}
}
micBg1.setVisibility(View.GONE);
micBg2.setVisibility(View.GONE);
micBg1.clearAnimation();
micBg2.clearAnimation();
userImg.setImageBitmap(userBlurImg);
userImg.startAnimation(animZoomOut);
artistImg.setImageBitmap(artistImgBitmap);
artistImg.startAnimation(animZoomIn);
break;
}
return false;
}
});
saveBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
createMp3Dialog.show();
vAudioPlayer.setSampleTranspo(true);
vAudioPlayer.setlistenerStop(true);
if (assView != null)
assView.Destroy();
if (lyricsLayout != null) {
lyricsLayout.removeAllViews();
}
seekBar.setProgress(0);
seekBar.setMax(100);
Log.d(TAG, "donep3: " + "done");
if (mMp3ConcatThread != null) {
try {
mMp3ConcatThread.startCombine(combineList, 7777777777777777777L, combineList.get(combineList.size() - 1), lastDuration);
} catch (ArrayIndexOutOfBoundsException e) {
e.getMessage();
finish();
}
}
releaseAudioPlayer();
recMusicPath = SmcInfo.APPDIRPATH + "/ucc/" + currentCreateFileName.substring(currentCreateFileName.lastIndexOf('/') + 1, currentCreateFileName.length()) + ".mp3";
}
});
DisplayMetrics displayMetrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
deviceWidth = displayMetrics.widthPixels;
deviceHeight = displayMetrics.heightPixels;
lyricsWidth = deviceWidth;
lyricsHeight = deviceHeight;
Log.d(TAG, "onCreate: " + lyricsWidth + "/" + lyricsHeight);
layoutWidth = lyricsWidth * 2 / 3;
int parentAssViewHeight = ((lyricsHeight * 50) / 91) - 2;
if (layoutWidth > parentAssViewHeight)
layoutWidth = (parentAssViewHeight * 8) / 10;
assViewParams = new LinearLayout.LayoutParams(new ViewGroup.LayoutParams(layoutWidth * 2, layoutWidth));
assViewParams.gravity = Gravity.CENTER;
lyricsLayout = (LinearLayout)
findViewById(R.id.lyrics_layout);
if (assView != null) {
assView.Destroy();
}
if (lyricsLayout != null) {
lyricsLayout.removeAllViews();
}
assView = new AssRenderView(getApplicationContext(), layoutWidth * 13 / 10, layoutWidth);
File assFile = new File(assPath);
if (assFile.exists()) {
assView.ReadASSFile(assFile.toString(), true, layoutWidth * 2, layoutWidth * 5 / 7);
}
lyricsLayout.addView(assView, assViewParams);
lyricsLayout.setGravity(Gravity.CENTER);
assView.ShowASS(true);
seekBar.setOnSeekBarChangeListener(this);
seekBar.setProgress(0);
seekBar.setMax(100);
}
private void startPrelisteningActivity(String recMusicPath, String songTitle) {
Intent intent = new Intent(RecordActivity.this, PrelisteningActivity.class);
intent.putExtra("recMusicPath", recMusicPath);
intent.putExtra("songTitle", songTitle);
startActivityForResult(intent, 1);
}
private String[] ampToMp3(String ampPath) {
String[] pathArray = new String[2];
try {
File ampFile = new File(ampPath);
String ampName = ampFile.getName();
int size;
BufferedInputStream buf = null;
FileInputStream fis = null;
size = (int) ampFile.length();
byte[] bytes = new byte[size];
fis = new FileInputStream(ampFile);
buf = new BufferedInputStream(fis, 8 * 1024);
buf.read(bytes, 0, bytes.length);
byte[] vocalbytes = AMPFileUtility.getByteData(bytes, "voice");
byte[] mrbytes = AMPFileUtility.getByteData(bytes, "mr");
voicePath = SmcInfo.APPDIRPATH + "/audio/" + ampName.replaceAll(".amp", "") + "_voice.mp3";
mrPath = SmcInfo.APPDIRPATH + "/audio/" + ampName.replaceAll(".amp", "") + "_mr.mp3";
BufferedOutputStream bosVocal = new BufferedOutputStream(new FileOutputStream(voicePath));
bosVocal.write(vocalbytes);
bosVocal.flush();
bosVocal.close();
BufferedOutputStream bosMr = new BufferedOutputStream(new FileOutputStream(mrPath));
bosMr.write(mrbytes);
bosMr.flush();
bosMr.close();
} catch (Exception e) {
e.getMessage();
}
pathArray[0] = voicePath;
pathArray[1] = mrPath;
return pathArray;
}
private void play(String[] pathArray) {
releaseAudioPlayer();
String voicePath = pathArray[0];
String mrPath = pathArray[1];
mAudioPlayer = new Player_Thread();
mAudioPlayer.setOnAudioStreamInterface(this);
mAudioPlayer.setUrlString(mrPath);
mAudioPlayer.setlistenerStop(true);
vAudioPlayer = new Player_Thread();
vAudioPlayer.setOnAudioStreamInterface(this);
vAudioPlayer.setUrlString(voicePath);
vAudioPlayer.setlistenerStop(false);
try {
mAudioPlayer.play();
vAudioPlayer.play();
} catch (IOException e) {
e.printStackTrace();
}
}
private void releaseAudioPlayer() {
if (mAudioPlayer != null) {
mAudioPlayer.stop();
mAudioPlayer.release();
mAudioPlayer = null;
}
if (vAudioPlayer != null) {
vAudioPlayer.stop();
vAudioPlayer.release();
vAudioPlayer = null;
}
if (mRecordThread != null) {
mRecordThread.stopRecording();
}
}
public static String getCurrentTime(boolean dateForm) {
SimpleDateFormat dateFormat;
if (dateForm)
dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS"); //SSS가 밀리세컨드 표시
else
dateFormat = new SimpleDateFormat("yyyyMMdd_HHmmssSSS");
Calendar calendar = Calendar.getInstance();
return dateFormat.format(calendar.getTime());
}
private String caltime(long sMillis, boolean timeFormat) {
double dMillis = 0;
int minutes = 0;
int seconds = 0;
int millis = 0;
String sTime;
try {
dMillis = Double.parseDouble(String.valueOf(sMillis));
} catch (Exception e) {
System.out.println(e.getMessage());
}
seconds = (int) (dMillis / 1000) % 60;
millis = (int) (dMillis % 1000);
if (seconds > 0) {
minutes = (int) (dMillis / 1000 / 60) % 60;
if (minutes > 0) {
if (timeFormat)
sTime = String.format("%02d:%02d.%d", minutes, seconds, millis);
else
sTime = String.format("%02d%02d%d", minutes, seconds, millis);
} else {
if (timeFormat)
sTime = String.format("%02d:%02d.%d", 0, seconds, millis);
else
sTime = String.format("%02d%02d%d", 0, seconds, millis);
}
} else {
if (timeFormat)
sTime = String.format("%02d:%02d.%d", 0, 0, millis);
else
sTime = String.format("%02d%02d%d", 0, 0, millis);
}
Log.d(TAG, "caltime: " + sTime);
return sTime;
}
public void copyWaveFile(String inFilename, String outFilename) {
FileInputStream in = null;
FileOutputStream out = null;
long totalAudioLen = 0;
long totalDataLen = totalAudioLen + 36;
long longSampleRate = SAMPLE_RATE;
int channels = 2;/////////////////byte 저장은 1에서 완벽함 AudioFormat.CHANNEL_IN_MONO: channels = 1;AudioFormat.CHANNEL_IN_STEREO: channels = 2;
long byteRate = RECORDER_BPP * SAMPLE_RATE * channels / 8;
try {
in = new FileInputStream(inFilename);
out = new FileOutputStream(outFilename);
byte[] data = new byte[bufferSize];
totalAudioLen = in.getChannel().size();
totalDataLen = totalAudioLen + 36;
AppLog.logString("File size: " + totalDataLen);
WriteWaveFileHeader(out, totalAudioLen, totalDataLen, longSampleRate, channels, byteRate);
while (in.read(data) != -1) {
out.write(data);
}
in.close();
out.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public void WriteWaveFileHeader(FileOutputStream out, long totalAudioLen, long totalDataLen, long longSampleRate, int channels, long byteRate) throws IOException {
byte[] header = new byte[44];
header[0] = 'R';
header[1] = 'I';
header[2] = 'F';
header[3] = 'F';
header[4] = (byte) (totalDataLen & 0xff);
header[5] = (byte) ((totalDataLen >> 8) & 0xff);
header[6] = (byte) ((totalDataLen >> 16) & 0xff);
header[7] = (byte) ((totalDataLen >> 24) & 0xff);
header[8] = 'W';
header[9] = 'A';
header[10] = 'V';
header[11] = 'E';
header[12] = 'f';
header[13] = 'm';
header[14] = 't';
header[15] = ' ';
header[16] = 16;
header[17] = 0;
header[18] = 0;
header[19] = 0;
header[20] = 1;
header[21] = 0;
header[22] = (byte) channels;
header[23] = 0;
header[24] = (byte) (longSampleRate & 0xff);
header[25] = (byte) ((longSampleRate >> 8) & 0xff);
header[26] = (byte) ((longSampleRate >> 16) & 0xff);
header[27] = (byte) ((longSampleRate >> 24) & 0xff);
header[28] = (byte) (byteRate & 0xff);
header[29] = (byte) ((byteRate >> 8) & 0xff);
header[30] = (byte) ((byteRate >> 16) & 0xff);
header[31] = (byte) ((byteRate >> 24) & 0xff);
header[32] = (byte) (2 * 16 / 8);
header[33] = 0;
header[34] = RECORDER_BPP;
header[35] = 0;
header[36] = 'd';
header[37] = 'a';
header[38] = 't';
header[39] = 'a';
header[40] = (byte) (totalAudioLen & 0xff);
header[41] = (byte) ((totalAudioLen >> 8) & 0xff);
header[42] = (byte) ((totalAudioLen >> 16) & 0xff);
header[43] = (byte) ((totalAudioLen >> 24) & 0xff);
out.write(header, 0, 44);
}
</long></long> -
Evolution #4148 : Augmenter la largeur de l’espace privé
21 juin 2018, par b bSuper, merci pour les modifs :)
-
Firefox audio tag doubles length of OGG Vorbis
22 mai 2014, par tomysshadowSo, here I have a demo file from my website
http://members.shaw.ca/darolynk/breakup/html5game/snd_music.ogg
I am running off of Firefox Beta 30.0 and this issue does not persist in Google Chrome. In Firefox, when I play the file back, the length is displayed at around twice of its actual length as 32:13 when it is only 12:52 in length. Even worse, the audio stutters, playing one second of noise, one second of silence. This issue is not persistent in Chrome nor Opera. It is not a streaming issue (the song is streamed by the time it is played back in fact).
I am wondering if this is an issue with the codec or with Firefox’s intrepretation of the codec, but more importantly, I want to know how to fix it. Some information about the file : the file is in OGG Vorbis format, 44100 Hz, 32 kbps Mono (yes, I am running out of storage space). It was encoded with SUPER, which in turn uses FFMpeg and MEncoder as necessary.
This does not apply to all files of this format, making the issue even stranger. Are OGG Vorbis files over a certain length not allowed or interpreted differently by Firefox ? This must be the case for someone else and not just me...
Any help is appreciated, thanks in advance !
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