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Médias (91)
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Spitfire Parade - Crisis
15 mai 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
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Wired NextMusic
14 mai 2011, par
Mis à jour : Février 2012
Langue : English
Type : Video
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Video d’abeille en portrait
14 mai 2011, par
Mis à jour : Février 2012
Langue : français
Type : Video
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Sintel MP4 Surround 5.1 Full
13 mai 2011, par
Mis à jour : Février 2012
Langue : English
Type : Video
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Carte de Schillerkiez
13 mai 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Texte
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Publier une image simplement
13 avril 2011, par ,
Mis à jour : Février 2012
Langue : français
Type : Video
Autres articles (80)
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Amélioration de la version de base
13 septembre 2013Jolie sélection multiple
Le plugin Chosen permet d’améliorer l’ergonomie des champs de sélection multiple. Voir les deux images suivantes pour comparer.
Il suffit pour cela d’activer le plugin Chosen (Configuration générale du site > Gestion des plugins), puis de configurer le plugin (Les squelettes > Chosen) en activant l’utilisation de Chosen dans le site public et en spécifiant les éléments de formulaires à améliorer, par exemple select[multiple] pour les listes à sélection multiple (...)
Sur d’autres sites (6663)
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Anomalie #2664 (Nouveau) : Hack de malade avec formulaire login
17 avril 2012, par Suske -Super pratique : dans un article permet de faire par exemple un article d’annonce dans le public pour pointer vers une zone à accès restreint. Du coup j’ai tenté . Bon ça marche pas, c’est pas grave mais par contre cela crée une redirection systématique vers l’article 1, on ne peut plus accéder à (...)
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Anomalie #3455 (Nouveau) : bug extraire_attribut sur xxx-yyy et xxx
26 mai 2015, par Fil Uple code de test :
[(#VAL
|inserer_attributtoto-a,a|inserer_attributtoto-b,b|inserer_attributtoto,c|extraire_attributtoto-a|==a| ?SUPER,BUG)]
en fait inserer_attributtoto,c| vient écraser la (première) valeur toto-a
le bug semble se situer depuis des lustres dans la fonction extraire_attribut
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Android merging PCM and MP3 into AAC
4 février 2019, par katarotyI have a program that records user input sound as
PCM(I needed to do it separately to "play" with the voice) and then I also have a custom audio track, which is inMP3format, that I want merge with thePCMfile.To start off I convert both of them to
WAVseparately, then I combine the 2WAVfiles, and finally convert the result toAACbecause I also need to merge the audio with video later.I tried merging 2
AACfiles, but that did not work out for me.For audio conversion I am using FFmpeg-Android.
The problem is that it takes way too long, around 1-2min to do the whole conversion and because of that I need a new way to do it all. I have looked into other libraries but this was the only one I could get to work.
Can someone recommend something that would do the whole process faster ?
Here is my code to merge all of the files :
public class AudioProcessor {
private Context context;
private FFmpeg ffmpeg;
private AudioProcessorListener listener;
private File micPcmFile;
private File backgroundMp3File;
private File pcmtowavTempFile;
private File mp3towavTempFile;
private File combinedwavTempFile;
private File outputFile;
private File volumeChangedTempFile;
private FFtask currentTask;
private int videoRecordingLength = 0;
TextView extensionDownload, percentProgress;
private static final String TAG = "FFMPEG AV Processor";
public AudioProcessor(Context context, Activity activity) {
ffmpeg = null;
ffmpeg = FFmpeg.getInstance(context);
percentProgress = activity.findViewById(R.id.percentProgress);
percentProgress.setSingleLine(false);
this.context = context;
prepare();
}
/**
* Program main method. Starts running program
* @throws Exception
*/
public void process() throws Exception {
if (!ffmpeg.isSupported()) {
Log.e(TAG, "FFMPEG not supported! Cannot convert audio!");
throw new RuntimeException("FFMPeg has to be supported");
}
if (!checkIfAllFilesPresent()) {
Log.e(TAG, "All files are not set yet. Please set file first");
throw new RuntimeException("Files are not set!");
}
Log.e(TAG, "Start processing audio!");
listener.onStart();
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
convertPCMToWav();
}
}, 200);
}
/**
* Prepares program
*/
private void prepare() {
Log.d(TAG, "Preparing everything...");
prepareTempFiles();
}
/**
* Converts PCM to wav file. Automatically create new file.
*/
private void convertPCMToWav() {
Log.d(TAG, "Convert PCM TO Wav");
//ffmpeg -f s16le -ar 44.1k -ac 2 -i file.pcm file.wav
String[] cmd = { "-f" , "s16le", "-ar", "44.1k", "-i", micPcmFile.toString(), "-y", pcmtowavTempFile.toString()};
currentTask = ffmpeg.execute(cmd, new ExecuteBinaryResponseHandler() {
@Override
public void onStart() {
super.onStart();
percentProgress.setVisibility(View.VISIBLE);
percentProgress.setText("Converting your recording\n"+"1/5");
}
@Override
public void onSuccess(String message) {
super.onSuccess(message);
convertMP3ToWav();
}
@Override
public void onFailure(String message) {
super.onFailure(message);
onError(message);
convertPCMToWav();
}
});
}
/**
* Converts mp3 file to wav file.
* Automatically creates Wav file
*/
private void convertMP3ToWav() {
Log.e(TAG, "Convert MP3 TO Wav");
//ffmpeg -ss 0 -t 30 -i file.mp3 file.wav
//String[] cmd = { "-ss", "0", "-t", Integer.toString(videoRecordingLength), "-i" , backgroundMp3File.toString(), "-y", mp3towavTempFile.toString() };
String[] cmd = { "-i" , backgroundMp3File.toString(), "-y", mp3towavTempFile.toString() };
currentTask = ffmpeg.execute(cmd, new ExecuteBinaryResponseHandler() {
@Override
public void onStart() {
super.onStart();
percentProgress.setText("Converting background audio\n"+"2/5");
Log.d(TAG, "Convert MP3 TO Wav");
}
@Override
public void onSuccess(String message) {
super.onSuccess(message);
changeMicAudio();
}
@Override
public void onFailure(String message) {
super.onFailure(message);
Log.e(TAG, "Failed to convert MP3 TO Wav");
onError(message);
throw new RuntimeException("Failed to convert MP3 TO Wav");
}
});
}
/**
* Combines 2 wav files into one wav file. Overlays audio
*/
private void combineWavs() {
Log.e(TAG, "Combine wavs");
//ffmpeg -i C:\Users\VR1\Desktop\_mp3.wav -i C:\Users\VR1\Desktop\_pcm.wav -filter_complex amix=inputs=2:duration=first:dropout_transition=3 C:\Users\VR1\Desktop\out.wav
String[] cmd = { "-i" , pcmtowavTempFile.toString(), "-i", volumeChangedTempFile.toString(), "-filter_complex", "amix=inputs=2:duration=first:dropout_transition=3", "-y",combinedwavTempFile.toString()};
currentTask = ffmpeg.execute(cmd, new ExecuteBinaryResponseHandler() {
@Override
public void onStart() {
super.onStart();
percentProgress.setText("Combining the two audio files\n"+"4/5");
}
@Override
public void onSuccess(String message) {
super.onSuccess(message);
encodeWavToAAC();
}
@Override
public void onFailure(String message) {
super.onFailure(message);
onError(message);
}
});
}
private void changeMicAudio(){
Log.e(TAG, "Change audio volume");
//ffmpeg -i input.wav -filter:a "volume=1.5" output.wav
String[] cmdy = { "-i", mp3towavTempFile.toString(), "-af", "volume=0.9", "-y",volumeChangedTempFile.toString()};
currentTask = ffmpeg.execute(cmdy, new ExecuteBinaryResponseHandler() {
@Override
public void onStart() {
super.onStart();
percentProgress.setText("Normalizing volume\n"+"3/5");
}
@Override
public void onSuccess(String message) {
combineWavs();
super.onSuccess(message);
}
@Override
public void onFailure(String message) {
super.onFailure(message);
Log.e("AudioProcessor", message);
}
});
}
/**
* Do something on error. Releases program data (deletes files)
* @param message
*/
private void onError(String message) {
completed();
if (listener != null) {
//listener.onError(message);
}
}
/**
* Encode to AAC
*/
private void encodeWavToAAC() {
Log.d(TAG, "Encode Wav file to AAC");
//ffmpeg -i file.wav -c:a aac -b:a 128k -f adts output.m4a
String[] cmd = { "-i" , combinedwavTempFile.toString(), "-c:a", "aac", "-b:a", "128k", "-f", "adts", "-y",outputFile.toString()};
currentTask = ffmpeg.execute(cmd, new ExecuteBinaryResponseHandler() {
@Override
public void onStart() {
super.onStart();
percentProgress.setText("Normalizing volume\n"+"3/5");
}
@Override
public void onSuccess(String message) {
super.onSuccess(message);
if (listener != null) {
listener.onSuccess(outputFile);
}
completed();
}
@Override
public void onFailure(String message) {
super.onFailure(message);
onError(message);
encodeWavToAAC();
}
});
}
/**
* Uninitializes class
*/
private void completed() {
if (listener != null) {
listener.onFinish();
}
Log.d(TAG, "Process completed successfully!");
destroyTempFiles();
}
/**
* Prepares temp required files by deleteing them if they exsist.
* Files cannot exists before ffmpeg actions. FFMpeg automatically creates those files.
*/
private void prepareTempFiles() {
Log.d(TAG, "Preparing Temp files...");
pcmtowavTempFile = new File(context.getFilesDir()+ Common.TEMP_LOCAL_DIR + "/" + "_pcm.wav");
mp3towavTempFile = new File(context.getFilesDir()+ Common.TEMP_LOCAL_DIR + "/" + "_mp3.wav");
combinedwavTempFile = new File(context.getFilesDir()+ Common.TEMP_LOCAL_DIR + "/" + "_combined.wav");
volumeChangedTempFile = new File(context.getFilesDir()+ Common.TEMP_LOCAL_DIR + "/" + "_volumeChanged.wav");
}
/**
* Destroys temp required files
*/
private void destroyTempFiles() {
Log.d(TAG, "Destroying Temp files...");
pcmtowavTempFile.delete();
mp3towavTempFile.delete();
combinedwavTempFile.delete();
volumeChangedTempFile.delete();
Log.d(TAG, "Destroying files completed!");
}
/**
* Checks if all files are set, so we can process them
* @return - all files ready
*/
private boolean checkIfAllFilesPresent() {
if(micPcmFile == null || backgroundMp3File == null || outputFile == null) {
Log.e(TAG, "All files are not set! Set all files!");
throw new RuntimeException("Output file is not present!");
}
Log.d(TAG, "All files are present!");
return true;
}
public void setOutputFile(File outputFile) {
this.outputFile = outputFile;
}
public void setListener(AudioProcessorListener listener) {
this.listener = listener;
}
public void setMicPcmFile(File micPcmFile) {
this.micPcmFile = micPcmFile;
}
public void setBackgroundMp3File(File backgroundMp3File) {
this.backgroundMp3File = backgroundMp3File;
}
public void setVideoRecordingLength(int seconds) {
this.videoRecordingLength = seconds;
}
/**
* Quits current processing ffmpeg task
*/
public void killCurrentTask() {
if (currentTask != null) {
currentTask.killRunningProcess();
}
}
public interface AudioProcessorListener {
void onStart();
void onSuccess(File output);
void onError(String message);
void onFinish();
}
}
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