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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 -
Que fait exactement ce script ?
18 janvier 2011, parCe script est écrit en bash. Il est donc facilement utilisable sur n’importe quel serveur.
Il n’est compatible qu’avec une liste de distributions précises (voir Liste des distributions compatibles).
Installation de dépendances de MediaSPIP
Son rôle principal est d’installer l’ensemble des dépendances logicielles nécessaires coté serveur à savoir :
Les outils de base pour pouvoir installer le reste des dépendances Les outils de développements : build-essential (via APT depuis les dépôts officiels) ; (...) -
Sélection de projets utilisant MediaSPIP
29 avril 2011, parLes exemples cités ci-dessous sont des éléments représentatifs d’usages spécifiques de MediaSPIP pour certains projets.
Vous pensez avoir un site "remarquable" réalisé avec MediaSPIP ? Faites le nous savoir ici.
Ferme MediaSPIP @ Infini
L’Association Infini développe des activités d’accueil, de point d’accès internet, de formation, de conduite de projets innovants dans le domaine des Technologies de l’Information et de la Communication, et l’hébergement de sites. Elle joue en la matière un rôle unique (...)
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Audio Video Mixing - Sync issue in Android with FFMPEG, Media Codec in different devices
24 novembre 2020, par khushbuI have already tried everything for Audio Video mixing and it's not working perfectly as in processing while mixing audio into the recorded video, sometimes the audio is ahead of video and vice-versa.


Using FFMPEG :


This is for add an Audio file to the Video file and generated the final Video where audio is replaced in the video.


val cmd ="-i $inputVideoPath -i ${inputAudio.absolutePath} -map 0:v -map 1:a -c:v copy -shortest ${outputVideo.absolutePath}"


After generating the final video, found some delay based on device performance so added delay in the below two cases :


1)Added delay in Audio if audio is ahead of the video.


val cmd = "-i ${tmpVideo.absolutePath} -itsoffset $hms -i ${tmpVideo.absolutePath} -map 0:v -map 1:a -c copy -preset veryfast ${createdVideo1?.absolutePath}"


2)Added delay in Video if the video is ahead of the audio.


val cmd = "-i ${tmpVideo.absolutePath} -itsoffset $hms -i ${tmpVideo.absolutePath} -map 1:v -map 0:a -c copy -preset veryfast ${createdVideo1?.absolutePath}"


NOTE : Here $hms is delay in 00:00:00.000 formate


but still, it's not working on all the devices like readmi, oneplus etc.


Using Media Codec :


Found some better performance in this solution but still not working on all the devices.


In this process, It's supporting .aac format so first if the user selected .mp3 formate than i have to convert it into .aac format using the below function :


fun Convert_Mp3_to_acc() {

 
 AndroidAudioConverter.load(requireActivity(), object : ILoadCallback {
 override fun onSuccess() {

 val callback: IConvertCallback = object : IConvertCallback {
 override fun onSuccess(convertedFile: File) {
 toggleLoader(false)
 audioLink = convertedFile.absolutePath
 append()
 

 }

 override fun onFailure(error: java.lang.Exception) {
 toggleLoader(false)
 Toast.makeText(requireActivity(), "" + error, Toast.LENGTH_SHORT).show()
 }
 }
 AndroidAudioConverter.with(requireActivity())
 .setFile(File(audioLink))
 .setFormat(AudioFormat.AAC)
 .setCallback(callback)
 .convert()
 }

 override fun onFailure(error: java.lang.Exception) {
 toggleLoader(false)
 }
 })
}


After successful conversion from .mp3 to .aac formate, It's extracting audio track and video track for merge


private fun append(): Boolean {

 val progressDialog = ProgressDialog(requireContext())
 Thread {
 requireActivity().runOnUiThread {
 progressDialog.setMessage("Please wait..")
 progressDialog.show()
 }
 val video_list = ArrayList<string>()
 for (i in videopaths.indices) {
 val file: File = File(videopaths.get(i))
 if (file.exists()) {
 val retriever = MediaMetadataRetriever()
 retriever.setDataSource(requireActivity(), Uri.fromFile(file))
 val hasVideo =
 retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_HAS_VIDEO)
 val isVideo = "yes" == hasVideo
 if (isVideo /*&& file.length() > 1000*/) {
 Log.d("resp", videopaths.get(i))
 video_list.add(videopaths.get(i))
 }
 }
 }
 try {
 val inMovies = arrayOfNulls<movie>(video_list.size)
 for (i in video_list.indices) {
 inMovies[i] = MovieCreator.build(video_list[i])
 }
 val videoTracks: MutableList<track> =
 LinkedList()
 val audioTracks: MutableList<track> =
 LinkedList()
 for (m in inMovies) {
 for (t in m!!.tracks) {
 if (t.handler == "soun") {
 audioTracks.add(t)
 }
 if (t.handler == "vide") {
 videoTracks.add(t)
 }
 }
 }
 val result = Movie()
 if (audioTracks.size > 0) {
 result.addTrack(AppendTrack(*audioTracks.toTypedArray()))
 }
 if (videoTracks.size > 0) {
 result.addTrack(AppendTrack(*videoTracks.toTypedArray()))
 }
 val out = DefaultMp4Builder().build(result)
 var outputFilePath: String? = null
 outputFilePath = Variables.outputfile

 /*if (audio != null) {
 Variables.outputfile
 } else {
 Variables.outputfile2
 }*/

 val fos = FileOutputStream(File(outputFilePath))
 out.writeContainer(fos.channel)
 fos.close()

 requireActivity().runOnUiThread {
 progressDialog.dismiss()

 Merge_withAudio()

 /* if (audio != null) else {
 //Go_To_preview_Activity()
 }*/
 }
 } catch (e: java.lang.Exception) {
 }
 }.start()

 return true
}
</track></track></movie></string>

This will add the selected audio with the recorded video


fun Merge_withAudio() {
 val root = Environment.getExternalStorageDirectory().toString()

 // Uri mediaPath = Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.file_copy);
 //String audio_file =Variables.app_folder+Variables.SelectedAudio_AAC;

 //String filename = "android.resource://" + getPackageName() + "/raw/file_copy.aac";
 val audio_file: String = audioLink!!
 Log.e("Merge ", audio_file)
 val video = "$root/output.mp4"

 val bundle=Bundle()
 bundle.putString("FinalVideo", createdVideo?.absolutePath)

 val merge_video_audio = Merge_Video_Audio(this, bundle, object : AsyncResponse {
 override fun processFinish(output: Bundle?) {

 requireActivity().runOnUiThread {
 finalVideo = bundle.getString("FinalVideo")
 createdVideo = File(finalVideo)

 Log.e("Final Path ", finalVideo)

 createThumb {
 setUpExoPlayer()
 }
 }

 }
 })
 merge_video_audio.doInBackground(audio_file, video, createdVideo?.absolutePath)
}


 public class Merge_Video_Audio extends AsyncTask {

 ProgressDialog progressDialog;
 RecentCompletedVideoFragment context;
 public AsyncResponse delegate = null;


Bundle bundleValue;

String audio,video,output;

public Merge_Video_Audio(RecentCompletedVideoFragment context, Bundle bundle , AsyncResponse delegate ){
 this.context=context;
 this.bundleValue=bundle;
 this.delegate=delegate;
 progressDialog=new ProgressDialog(context.requireContext());
 progressDialog.setMessage("Please Wait...");
}

@Override
protected void onPreExecute() {
 super.onPreExecute();
}

@Override
public String doInBackground(String... strings) {
 try {
 progressDialog.show();
 }catch (Exception e){

 }
 audio=strings[0];
 video=strings[1];
 output=strings[2];

 Log.d("resp",audio+"----"+video+"-----"+output);

 Thread thread = new Thread(runnable);
 thread.start();

 return null;
}


@Override
protected void onPostExecute(String s) {
 super.onPostExecute(s);
 Log.e("On Post Execute ", "True");


}


 public void Go_To_preview_Activity(){

 delegate.processFinish(bundleValue);
 }

 public Track CropAudio(String videopath, Track fullAudio){
 try {

 IsoFile isoFile = new IsoFile(videopath);

 double lengthInSeconds = (double)
 isoFile.getMovieBox().getMovieHeaderBox().getDuration() /
 isoFile.getMovieBox().getMovieHeaderBox().getTimescale();


 Track audioTrack = (Track) fullAudio;


 double startTime1 = 0;
 double endTime1 = lengthInSeconds;


 long currentSample = 0;
 double currentTime = 0;
 double lastTime = -1;
 long startSample1 = -1;
 long endSample1 = -1;


 for (int i = 0; i < audioTrack.getSampleDurations().length; i++) {

 long delta = audioTrack.getSampleDurations()[i];

 if (currentTime > lastTime && currentTime <= startTime1) {
 // current sample is still before the new starttime
 startSample1 = currentSample;
 }
 if (currentTime > lastTime && currentTime <= endTime1) {
 // current sample is after the new start time and still before the new endtime
 endSample1 = currentSample;
 }

 lastTime = currentTime;
 currentTime += (double) delta / (double) audioTrack.getTrackMetaData().getTimescale();
 currentSample++;
 }

 CroppedTrack cropperAacTrack = new CroppedTrack(fullAudio, startSample1, endSample1);

 return cropperAacTrack;

 } catch (IOException e) {
 e.printStackTrace();
 }

 return fullAudio;
}



 public Runnable runnable =new Runnable() {
 @Override
 public void run() {

 try {

 Movie m = MovieCreator.build(video);


 List nuTracks = new ArrayList<>();

 for (Track t : m.getTracks()) {
 if (!"soun".equals(t.getHandler())) {

 Log.e("Track ",t.getName());
 nuTracks.add(t);
 }
 }

 Log.e("Path ",audio.toString());


 try {
 // Track nuAudio = new AACTrackImpl();
 Track nuAudio = new AACTrackImpl(new FileDataSourceImpl(audio));

 Track crop_track = CropAudio(video, nuAudio);

 nuTracks.add(crop_track);

 m.setTracks(nuTracks);

 Container mp4file = new DefaultMp4Builder().build(m);

 FileChannel fc = new FileOutputStream(new File(output)).getChannel();
 mp4file.writeContainer(fc);
 fc.close();

 }catch (FileNotFoundException fnfe){
 fnfe.printStackTrace();
 }catch(IOException ioe){
 ioe.printStackTrace();
 }


 try {

 progressDialog.dismiss();
 }catch (Exception e){
 Log.d("resp",e.toString());

 }finally {
 Go_To_preview_Activity();

 }

 } catch (IOException e) {
 e.printStackTrace();
 Log.d("resp",e.toString());

 }

 }

 };

 }


This solution is also not working in all the devices.


Can anyone suggest where i am going wrong or any solution for it ?


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Evolution #4305 : Permettre d’ordonner une liste d’objets liés à un autre objet
27 novembre 2020, par Peet duHolà,
Après de (très) nombreux tests, ça marche bien.
J’ajouterais que, en adaptant le code de
/prive/objets/liste/auteurs_lies.htmlsur divers plugins, j’arrive à ordonner des liaisons autres que celles des auteurs.
Du coup, je confirme que le plugin Rang_auteurs est bien générique et qu’il mériterait sans doute de s’appeler "Rang_liens"Super merci pour tout ce boulot.
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How to stream a usb webcam to an android phone with ffmpeg and ffserver ?
26 juillet 2015, par victor jungI am desperately trying to live stream the usb webcam from a linux computer to my android phone.
I tried with ffmpeg and ffserver, to create the stream and with videoview in android to display it. I tried all the possible format/encoder/protocols possibilities but nothing worked. In most case I am able to open the stream in VLC in another PC, but I was never able to play on my phone. I always get this error :
"can’t play this video"
Here is my app code :package com.example.victor.videostream;
import android.os.Bundle;
import android.app.Activity;
import android.view.View;
import android.net.Uri;
import android.widget.MediaController;
import android.widget.VideoView;
public class MainActivity extends Activity
{
VideoView videoView;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
videoView = null;
setContentView(R.layout.activity_main);
videoView =(VideoView)findViewById(R.id.VideoView);
MediaController mediaController= new MediaController(this);
mediaController.setAnchorView(videoView);
Uri uri = Uri.parse("http://host:port/mystream.3gp");
videoView.setMediaController(mediaController);
videoView.setVideoURI(uri);
videoView.requestFocus();
videoView.start();
}
}I read here
about god encoding practice for android, but even with .3gp format encoded with mpeg4 as suggested it doesn’t work. Have any body once succeeded doing this ?
I am also up to discover other possibilities to stream this webcam to my android if you have any ideas.
this is the closest post I found but no solution...
Hope somebody can help !
thanks for reading.
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