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Le profil des utilisateurs
12 avril 2011, parChaque utilisateur dispose d’une page de profil lui permettant de modifier ses informations personnelle. Dans le menu de haut de page par défaut, un élément de menu est automatiquement créé à l’initialisation de MediaSPIP, visible uniquement si le visiteur est identifié sur le site.
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Configurer la prise en compte des langues
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Afin de configurer la prise en compte de nouvelles langues, il est nécessaire de se rendre dans la partie "Administrer" du site.
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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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when i record video with javacv it comes "java.lang.NoClassDefFoundError : org.bytedeco.javacpp.avutil"
9 avril 2020, par Pradeep SimbaI make a video recorder android app with javacv.
But, when i run this app this error occurs "java.lang.NoClassDefFoundError : org.bytedeco.javacpp.avutil".



How can I solve this error ?



gradle.build file



android {
 ..............
 packagingOptions {
 exclude 'META-INF/services/javax.annotation.processing.Processor'
 pickFirst 'META-INF/maven/org.bytedeco.javacpp-presets/opencv/pom.properties'
 pickFirst 'META-INF/maven/org.bytedeco.javacpp-presets/opencv/pom.xml'
 pickFirst 'META-INF/maven/org.bytedeco.javacpp-presets/ffmpeg/pom.properties'
 pickFirst 'META-INF/maven/org.bytedeco.javacpp-presets/ffmpeg/pom.xml'
 }
}

dependencies {

implementation group: 'org.bytedeco', name: 'javacv', version: '1.1'
implementation group: 'org.bytedeco.javacpp-presets', name: 'opencv', version: '3.0.0-1.1', classifier: 'android-arm'
implementation group: 'org.bytedeco.javacpp-presets', name: 'ffmpeg', version: '2.8.1-1.1', classifier: 'android-arm'
implementation group: 'org.bytedeco.javacpp-presets', name: 'opencv', version: '3.0.0-1.1', classifier: 'android-x86'
implementation group: 'org.bytedeco.javacpp-presets', name: 'ffmpeg', version: '2.8.1-1.1', classifier: 'android-x86'

}



My demo code VideoService which will invoke in MainActivity



package com.fs.fs.api;

import com.fs.fs.App;
import com.fs.fs.utils.DateUtils;
import com.fs.fs.utils.FileUtils;

import org.bytedeco.javacpp.avcodec;
import org.bytedeco.javacv.FFmpegFrameRecorder;
import org.bytedeco.javacv.FrameRecorder;

import java.util.Date;

/**
 * Created by wyx on 2017/1/11.
 */
public class VideoService {
 private FFmpegFrameRecorder mFrameRecorder;
 private String path;

 private VideoService() {
 }

 private static class SingletonHolder {
 private static final VideoService INSTANCE = new VideoService();
 }

 public static VideoService getInstance() {
 return SingletonHolder.INSTANCE;
 }

 public void startRecordVideo() {
 String fileName = String.format("%s.%s", DateUtils.date2String(new Date(), "yyyyMMdd_HHmmss"), "mp4");
 path = FileUtils.getExternalFullPath(App.getInstance(), fileName);
 mFrameRecorder = new FFmpegFrameRecorder(path, 640, 480, 1);
 mFrameRecorder.setVideoCodec(avcodec.AV_CODEC_ID_H264);
 mFrameRecorder.setVideoOption("tune", "zerolatency");
 mFrameRecorder.setVideoOption("preset", "ultrafast");
 mFrameRecorder.setVideoOption("crf", "28");
 mFrameRecorder.setVideoBitrate(300 * 1000);
 mFrameRecorder.setFormat("mp4");

 mFrameRecorder.setFrameRate(30);
 mFrameRecorder.setAudioOption("crf", "0");
 mFrameRecorder.setSampleRate(48 * 1000);
 mFrameRecorder.setAudioBitrate(960 * 1000);
 mFrameRecorder.setAudioCodec(avcodec.AV_CODEC_ID_AAC);
 try {
 mFrameRecorder.start();
 } catch (FrameRecorder.Exception e) {
 e.printStackTrace();
 }
 }

 public void stop() {
 if (mFrameRecorder != null) {
 try {
 mFrameRecorder.stop();
 mFrameRecorder.release();
 } catch (FrameRecorder.Exception e) {
 e.printStackTrace();
 }
 mFrameRecorder = null;
 }
 }

}



MainActivity



package com.fs.fs.activity;

import android.app.Activity;
import android.os.Bundle;

import com.fs.fs.R;
import com.fs.fs.api.VideoService;

import static java.lang.Thread.sleep;


public class MainActivity extends Activity {

 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);


 VideoService.getInstance().startRecordVideo();
 try {
 sleep(10 * 1000);
 } catch (InterruptedException e) {
 e.printStackTrace();
 }
 VideoService.getInstance().stop();
 }
}



Error



E/AndroidRuntime: FATAL EXCEPTION: main
 Process: com.example.usb, PID: 660
 java.lang.NoClassDefFoundError: org.bytedeco.javacpp.avutil
 at org.bytedeco.javacpp.Loader.load(Loader.java:590)
 at org.bytedeco.javacpp.Loader.load(Loader.java:530)
 at org.bytedeco.javacpp.avcodec$AVPacket.<clinit>(avcodec.java:1694)
 at org.bytedeco.javacv.FFmpegFrameRecorder.<init>(FFmpegFrameRecorder.java:149)
 at com.fs.fs.api.VideoService.startRecordVideo(VideoService.java:34)
 at com.fs.fs.activity.MainActivity.onCreate(MainActivity.java:75)
 at android.app.Activity.performCreate(Activity.java:5304)
 at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1090)
 at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2245)
 at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2331)
 at android.app.ActivityThread.access$1000(ActivityThread.java:143)
 at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1244)
 at android.os.Handler.dispatchMessage(Handler.java:102)
 at android.os.Looper.loop(Looper.java:136)
 at android.app.ActivityThread.main(ActivityThread.java:5291)
 at java.lang.reflect.Method.invokeNative(Native Method)
 at java.lang.reflect.Method.invoke(Method.java:515)
 at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:849)
 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:665)
 at dalvik.system.NativeStart.main(Native Method)
 Caused by: java.lang.ClassNotFoundException: org.bytedeco.javacpp.avutil
 at java.lang.Class.classForName(Native Method)
 at java.lang.Class.forName(Class.java:251)
 at org.bytedeco.javacpp.Loader.load(Loader.java:585)
 at org.bytedeco.javacpp.Loader.load(Loader.java:530) 
 at org.bytedeco.javacpp.avcodec$AVPacket.<clinit>(avcodec.java:1694) 
 at org.bytedeco.javacv.FFmpegFrameRecorder.<init>(FFmpegFrameRecorder.java:149) 
 at com.fs.fs.api.VideoService.startRecordVideo(VideoService.java:34) 
 at com.fs.fs.activity.MainActivity.onCreate(MainActivity.java:75) 
 at android.app.Activity.performCreate(Activity.java:5304) 
 at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1090) 
 at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2245) 
 at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2331) 
 at android.app.ActivityThread.access$1000(ActivityThread.java:143) 
 at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1244) 
 at android.os.Handler.dispatchMessage(Handler.java:102) 
 at android.os.Looper.loop(Looper.java:136) 
 at android.app.ActivityThread.main(ActivityThread.java:5291) 
 at java.lang.reflect.Method.invokeNative(Native Method) 
 at java.lang.reflect.Method.invoke(Method.java:515) 
 at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:849) 
 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:665) 
 at dalvik.system.NativeStart.main(Native Method) 
 Caused by: java.lang.NoClassDefFoundError: org/bytedeco/javacpp/avutil
 at java.lang.Class.classForName(Native Method) 
 at java.lang.Class.forName(Class.java:251) 
 at org.bytedeco.javacpp.Loader.load(Loader.java:585) 
 at org.bytedeco.javacpp.Loader.load(Loader.java:530) 
 at org.bytedeco.javacpp.avcodec$AVPacket.<clinit>(avcodec.java:1694) 
 at org.bytedeco.javacv.FFmpegFrameRecorder.<init>(FFmpegFrameRecorder.java:149) 
 at com.fs.fs.api.VideoService.startRecordVideo(VideoService.java:34) 
 at com.fs.fs.activity.MainActivity.onCreate(MainActivity.java:75) 
 at android.app.Activity.performCreate(Activity.java:5304) 
 at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1090) 
 at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2245) 
 at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2331) 
 at android.app.ActivityThread.access$1000(ActivityThread.java:143) 
 at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1244) 
 at android.os.Handler.dispatchMessage(Handler.java:102) 
 at android.os.Looper.loop(Looper.java:136) 
 at android.app.ActivityThread.main(ActivityThread.java:5291) 
 at java.lang.reflect.Method.invokeNative(Native Method) 
 at java.lang.reflect.Method.invoke(Method.java:515) 
 at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:849) 
 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:665) 
 at dalvik.system.NativeStart.main(Native Method) 
 Caused by: java.lang.ClassNotFoundException: Didn't find class "org.bytedeco.javacpp.avutil" on path: DexPathList[[zip file "/data/app/com.fs.fs-2.apk"],nativeLibraryDirectories=[/data/app-lib/com.fs.fs-2, /vendor/lib, /system/lib, /data/datalib]]
 at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:497)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:457)
 at java.lang.Class.classForName(Native Method) 
 at java.lang.Class.forName(Class.java:251) 
 at org.bytedeco.javacpp.Loader.load(Loader.java:585) 
 at org.bytedeco.javacpp.Loader.load(Loader.java:530) 
 at org.bytedeco.javacpp.avcodec$AVPacket.<clinit>(avcodec.java:1694) 
 at org.bytedeco.javacv.FFmpegFrameRecorder.<init>(FFmpegFrameRecorder.java:149) 
 at com.fs.fs.api.VideoService.startRecordVideo(VideoService.java:34) 
 at com.fs.fs.activity.MainActivity.onCreate(MainActivity.java:75) 
 at android.app.Activity.performCreate(Activity.java:5304) 
 at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1090) 
 at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2245) 
 at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2331) 
 at android.app.ActivityThread.access$1000(ActivityThread.java:143) 
 at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1244) 
 at android.os.Handler.dispatchMessage(Handler.java:102) 
 at android.os.Looper.loop(Looper.java:136) 
 at android.app.ActivityThread.main(ActivityThread.java:5291) 
 at java.lang.reflect.Method.invokeNative(Native Method) 
 at java.lang.reflect.Method.invoke(Method.java:515) 
 at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:849) 
 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:665) 
 at dalvik.system.NativeStart.main(Native Method) 
</init></clinit></init></clinit></init></clinit></init></clinit>


How can i solve this error ?



Why error occurs ?


-
FFmpeg convert single image into video Android
15 mai 2014, par berserkI am trying to convert a single image into a video using FFmpeg. I have tried following the files :
"ffmpeg -analyzeduration 2147483647 -probesize 2147483647 -i " + packat.get(i).path +"-r 25 -t 1000 -y op.mp4"
"ffmpeg -loop 1 -r 23.976 -i input.jpg -t 00:00:02 -vcodec qtrle -an output.mov"
"ffmpeg -i c:\rawvideo\mask.bmp -loop 1 -r 29.97 -s 720x480
-aspect 4:3 -t 00:04:05 -vcodec mjpeg -vb 11261600 -an
c:\rawvideo\fullmask.avi"But all of them give me this annoying error :
Can not process SOS before SOF, skipping marker parser used 0 bytes (0 bits) decode frame unused 0 bytes decoding for stream 0 failed
Could not find codec parameters for stream 0 (Video: mjpeg): unspecified size
Consider increasing the value for the 'analyzeduration' and 'probesize' options /storage/sdcard0/cblVE/temp/0.jpg: could not find codec parameters
exit_program: 1Please help. I have searched for a solution from a week, but I have found nothing.
-
X264 : How to access NAL units from encoder ?
18 avril 2014, par user1884325When I call
frame_size = x264_encoder_encode(encoder, &nals, &i_nals, &pic_in, &pic_out);and subsequently write each NAL to a file like this :
if (frame_size >= 0)
{
int i;
int j;
for (i = 0; i < i_nals; i++)
{
printf("******************* NAL %d (%d bytes) *******************\n", i, nals[i].i_payload);
fwrite(&(nals[i].p_payload[0]), 1, nals[i].i_payload, fid);
}
}then I get this
My questions are :
1) Is it normal that there’s readable parameters in the beginning of the file ?
2) How do I configure the X264 encoder so that the encoder returns frames that I can send via UDP without the packet getting fragmented (size must be below 1390 or somewhere around that).
3) With the x264.exe I pass in these options :
"--threads 1 --profile baseline --level 3.2 --preset ultrafast --bframes 0 --force-cfr --no-mbtree --sync-lookahead 0 --rc-lookahead 0 --keyint 1000 --intra-refresh"How do I map those to the settings in the X264 parameters structure ? (x264_param_t)
4) I have been told that the x264 static library doesn’t support bitmap input to the encoder and that I have to use libswscale for conversion of the 24bit RGB input bitmap to YUV2. The encoder, supposedly, only takes YUV2 as input ? Is this true ? If so, how do I build libswscale for the x264 static library ?
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