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• ffmpeg screencasting with webcam

  6 septembre 2017, par curiouser

  I want to use the screen view of the computer in real-time for a fake webcam. I did the video action on the bottom. But the frames like the video (2.34) are forming on top of each other. How can I solve this problem.

  https://www.youtube.com/watch?v=6AZRiW3hHrw

  Load the module
  
  sudo modprobe v4l2loopback exclusive_caps=1
  
  
  
  Find the dummy device
  
  v4l2-ctl --list-devices
  
  
  
  Start the virtual-webcam (change "/dev/video1" to reflect your system)
  
  ffmpeg -f x11grab -r 15 -s 1920x1080 -i :0.0+0,0 -vcodec rawvideo -pix_fmt yuv420p -threads 0 -f v4l2 /dev/video1

• nginx RTMP to HLS : FFMPG error when trying multiple bitrate output [closed]

  28 mai 2014, par user3685074

  I’m currently trying to convert my RTMP Livestream into a HLS with 3 quality-settings.

  I followed this guide

  I’ve compiled my own FFMPEG and it’s working if I just convert 1 file.
  It seems libx264 isn’t able to do multiple encodings at the same time ?

  I’m using these command :

          exec /usr/local/bin/ffmpeg -i rtmp://localhost/src/$name 
  
          -c:a libfdk_aac -b:a 32k   -c:v libx264 -b:v 128K -f flv rtmp://localhost/hls/$name_low 
  
          -c:a libfdk_aac -b:a 64k   -c:v libx264 -b:v 256K -f flv rtmp://localhost/hls/$name_mid 
  
          -c:a libfdk_aac -b:a 128k  -c:v libx264 -b:v 512K -f flv rtmp://localhost/hls/$name_hi  2>>/tmp/ffmpeg.log;

  this is the output :

      ffmpeg version N-63519-g61917a1 Copyright (c) 2000-2014 the FFmpeg developers
  
        built on May 28 2014 18:06:42 with gcc 4.4.3 (Ubuntu 4.4.3-4ubuntu5.1)
  
        configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libfaac --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-x11grab --enable-libvpx --enable-libmp3lame --enable-librtmp --enable-libspeex --enable-libfdk_aac
  
        libavutil      52. 87.100 / 52. 87.100
  
        libavcodec     55. 65.100 / 55. 65.100
  
        libavformat    55. 41.100 / 55. 41.100
  
        libavdevice    55. 13.101 / 55. 13.101
  
        libavfilter     4.  5.100 /  4.  5.100
  
        libswscale      2.  6.100 /  2.  6.100
  
        libswresample   0. 19.100 /  0. 19.100
  
        libpostproc    52.  3.100 / 52.  3.100
  
      Metadata:
  
        Server                NGINX RTMP (github.com/arut/nginx-rtmp-module)
  
        width                 1280.00
  
        height                720.00
  
        displayWidth          1280.00
  
        displayHeight         720.00
  
        duration              0.00
  
        framerate             25.00
  
        fps                   25.00
  
        videodatarate         390.00
  
        videocodecid          0.00
  
        audiodatarate         27.00
  
        audiocodecid          11.00
  
      Input #0, flv, from 'rtmp://localhost/src/test':
  
        Metadata:
  
          Server          : NGINX RTMP (github.com/arut/nginx-rtmp-module)
  
          displayWidth    : 1280
  
          displayHeight   : 720
  
          fps             : 25
  
          profile         : 
  
          level           : 
  
        Duration: 00:00:00.00, start: 0.080000, bitrate: N/A
  
          Stream #0:0: Video: h264 (High), yuv420p, 1280x720, 399 kb/s, 25 fps, 25 tbr, 1k tbn, 50 tbc
  
          Stream #0:1: Audio: speex, 16000 Hz, mono, s16, 27 kb/s
  
      [libx264 @ 0x5260380] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
  
      [libx264 @ 0x5260380] profile High, level 3.1
  
      [libx264 @ 0x5260380] 264 - core 142 r2431 f23da7c - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=24 lookahead_threads=4 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=abr mbtree=1 bitrate=128 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
      [libx264 @ 0x525a920] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
  
      Output #0, flv, to 'rtmp://localhost/hls/test_low':
  
        Metadata:
  
          Server          : NGINX RTMP (github.com/arut/nginx-rtmp-module)
  
          displayWidth    : 1280
  
          displayHeight   : 720
  
          fps             : 25
  
          profile         : 
  
          level           : 
  
          Stream #0:0: Video: h264 (libx264), yuv420p, 1280x720, q=-1--1, 128 kb/s, 25 fps, 90k tbn, 25 tbc
  
          Metadata:
  
            encoder         : Lavc55.65.100 libx264
  
          Stream #0:1: Audio: aac (libfdk_aac), 16000 Hz, mono, s16, 32 kb/s
  
          Metadata:
  
            encoder         : Lavc55.65.100 libfdk_aac
  
      Output #1, flv, to 'rtmp://localhost/hls/test_mid':
  
        Metadata:
  
          Server          : NGINX RTMP (github.com/arut/nginx-rtmp-module)
  
          displayWidth    : 1280
  
          displayHeight   : 720
  
          fps             : 25
  
          profile         : 
  
          level           : 
  
          Stream #1:0: Video: h264, yuv420p, 1280x720, q=-1--1, 256 kb/s, 25 fps, 90k tbn, 25 tbc
  
          Metadata:
  
            encoder         : Lavc55.65.100 libx264
  
          Stream #1:1: Audio: aac, 16000 Hz, mono, s16
  
          Metadata:
  
            encoder         : Lavc55.65.100 libfdk_aac
  
      Output #2, flv, to 'rtmp://localhost/hls/test_hi':
  
        Metadata:
  
          Server          : NGINX RTMP (github.com/arut/nginx-rtmp-module)
  
          displayWidth    : 1280
  
          displayHeight   : 720
  
          fps             : 25
  
          profile         : 
  
          level           : 
  
          Stream #2:0: Video: h264, yuv420p, 1280x720, q=-1--1, 25 fps, 90k tbn, 25 tbc
  
          Metadata:
  
            encoder         : Lavc55.65.100 libx264
  
          Stream #2:1: Audio: aac, 16000 Hz, mono, s16
  
          Metadata:
  
            encoder         : Lavc55.65.100 libfdk_aac
  
      Stream mapping:
  
        Stream #0:0 -> #0:0 (h264 -> libx264)
  
        Stream #0:1 -> #0:1 (libspeex -> libfdk_aac)
  
        Stream #0:0 -> #1:0 (h264 -> libx264)
  
        Stream #0:1 -> #1:1 (libspeex -> libfdk_aac)
  
        Stream #0:0 -> #2:0 (h264 -> libx264)
  
        Stream #0:1 -> #2:1 (libspeex -> libfdk_aac)
  
      Error while opening encoder for output stream #1:0 - maybe incorrect parameters such as bit_rate, rate, width or height

  I hope you can help me and sorry for my bad english.

  Greetz
  Kevin

• Android java.lang.UnsatisfiedLinkError : android error for .so libraries

  14 septembre 2017, par Burak iren

  so libraries to my project for ffmpeg camera but I have got some errors when I load the library.

  I’m getting error like that "java.lang.UnsatisfiedLinkError : android" .

  My .so files directory is src-main-jniLibs-armeabi - so files. When I loading the so file gettting error I can’t load the so file. I have tried many answer but still going this error.

  If you want other config files I can load here.

  Error log is here also

  09-14 17:40:33.739 19728-20196/? E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #6
  
                                                 Process: com.leadtimeapp.io.internal.debug, PID: 19728
  
                                                 java.lang.RuntimeException: An error occurred while executing doInBackground()
  
                                                     at android.os.AsyncTask$3.done(AsyncTask.java:309)
  
                                                     at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:354)
  
                                                     at java.util.concurrent.FutureTask.setException(FutureTask.java:223)
  
                                                     at java.util.concurrent.FutureTask.run(FutureTask.java:242)
  
                                                     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)
  
                                                     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
  
                                                     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
  
                                                     at java.lang.Thread.run(Thread.java:818)
  
                                                  Caused by: java.lang.UnsatisfiedLinkError: dalvik.system.PathClassLoader[DexPathList[[zip file "/data/app/com.leadtimeapp.io.internal.debug-2/base.apk"],nativeLibraryDirectories=[/data/app/com.leadtimeapp.io.internal.debug-2/lib/arm64, /data/app/com.leadtimeapp.io.internal.debug-2/base.apk!/lib/arm64-v8a, /vendor/lib64, /system/lib64]]] couldn't find "libjniavformat.so"
  
                                                     at java.lang.Runtime.loadLibrary(Runtime.java:367)
  
                                                     at java.lang.System.loadLibrary(System.java:1076)
  
                                                     at com.googlecode.javacpp.Loader.loadLibrary(Loader.java:711)
  
                                                     at com.googlecode.javacpp.Loader.load(Loader.java:586)
  
                                                     at com.googlecode.javacpp.Loader.load(Loader.java:540)
  
                                                     at com.googlecode.javacv.cpp.avformat.<clinit>(avformat.java:40)
  
                                                     at com.googlecode.javacv.cpp.avformat.av_register_all(Native Method)
  
                                                     at com.leadtimeapp.io.ffmpeg.NewFFmpegFrameRecorder.<clinit>(NewFFmpegFrameRecorder.java:302)
  
                                                     at com.leadtimeapp.io.ffmpeg.FFmpegRecorderActivity.initVideoRecorder(FFmpegRecorderActivity.java:464)
  
                                                     at com.leadtimeapp.io.ffmpeg.FFmpegRecorderActivity.access$1400(FFmpegRecorderActivity.java:66)
  
                                                     at com.leadtimeapp.io.ffmpeg.FFmpegRecorderActivity$2.doInBackground(FFmpegRecorderActivity.java:368)
  
                                                     at com.leadtimeapp.io.ffmpeg.FFmpegRecorderActivity$2.doInBackground(FFmpegRecorderActivity.java:360)
  
                                                     at android.os.AsyncTask$2.call(AsyncTask.java:295)
  
                                                     at java.util.concurrent.FutureTask.run(FutureTask.java:237)
  
                                                     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234) 
  
                                                     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113) 
  
                                                     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588) 
  
                                                     at java.lang.Thread.run(Thread.java:818) 
  
                                                  Caused by: java.lang.UnsatisfiedLinkError: dalvik.system.PathClassLoader[DexPathList[[zip file "/data/app/com.leadtimeapp.io.internal.debug-2/base.apk"],nativeLibraryDirectories=[/data/app/com.leadtimeapp.io.internal.debug-2/lib/arm64, /data/app/com.leadtimeapp.io.internal.debug-2/base.apk!/lib/arm64-v8a, /vendor/lib64, /system/lib64]]] couldn't find "libavformat.so"
  
                                                     at java.lang.Runtime.loadLibrary(Runtime.java:367)
  
                                                     at java.lang.System.loadLibrary(System.java:1076)
  
                                                     at com.googlecode.javacpp.Loader.loadLibrary(Loader.java:711)
  
                                                     at com.googlecode.javacpp.Loader.load(Loader.java:577)
  
                                                     at com.googlecode.javacpp.Loader.load(Loader.java:540) 
  
                                                     at com.googlecode.javacv.cpp.avformat.<clinit>(avformat.java:40) 
  
                                                     at com.googlecode.javacv.cpp.avformat.av_register_all(Native Method) 
  
                                                     at com.leadtimeapp.io.ffmpeg.NewFFmpegFrameRecorder.<clinit>(NewFFmpegFrameRecorder.java:302) 
  
                                                     at com.leadtimeapp.io.ffmpeg.FFmpegRecorderActivity.initVideoRecorder(FFmpegRecorderActivity.java:464) 
  
                                                     at com.leadtimeapp.io.ffmpeg.FFmpegRecorderActivity.access$1400(FFmpegRecorderActivity.java:66) 
  
                                                     at com.leadtimeapp.io.ffmpeg.FFmpegRecorderActivity$2.doInBackground(FFmpegRecorderActivity.java:368) 
  
                                                     at com.leadtimeapp.io.ffmpeg.FFmpegRecorderActivity$2.doInBackground(FFmpegRecorderActivity.java:360) 
  
                                                     at android.os.AsyncTask$2.call(AsyncTask.java:295) 
  
                                                     at java.util.concurrent.FutureTask.run(FutureTask.java:237) 
  
                                                     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234) 
  
                                                     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113) 
  
                                                     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588) 
  
                                                     at java.lang.Thread.run(Thread.java:818) 
  
  09-14 17:40:34.168 19728-19790/? E/NativeCrypto: ssl=0x7f643ae900 
  
  cert_verify_callback x509_store_ctx=0x7f76e3e1a0 arg=0x0
  
  09-14 17:40:34.168 19728-19790/? E/NativeCrypto: ssl=0x7f643ae900 
  
  cert_verify_callback calling verifyCertificateChain authMethod=ECDHE_RSA
  
  </clinit></clinit></clinit></clinit>

  My gradle is

  apply plugin: 'com.android.application'
  
  apply plugin: 'io.fabric'
  
  apply plugin: 'com.github.triplet.play'
  
  apply plugin: 'project-report'
  
  
  
  def buildVersionCode = new Date().format("yyMMddHHmm", 
  
  TimeZone.getTimeZone("Europe/Istanbul")).toInteger()
  
  def buildVersionName = "1.1.2"
  
  def SupportVersion = '25.3.1'
  
  def OkHttpVersion = '3.2.0'
  
  def RetrofitVersion = '2.0.2'
  
  def FacebookVersion = '4.+'
  
  def GSonVersion = '2.6.2'
  
  
  
  android {
  
  
  
  compileSdkVersion 25
  
  buildToolsVersion "25.0.3"
  
  
  
  playAccountConfigs {
  
      defaultAccountConfig {
  
          ...
  
      }
  
  }
  
  
  
  defaultConfig {
  
      applicationId "...."
  
      resValue "string", "app_name", "..."
  
      resValue "string", "face_app_id", "...."
  
      minSdkVersion 16
  
      playAccountConfig = playAccountConfigs.defaultAccountConfig
  
      //noinspection OldTargetApi
  
      targetSdkVersion 25
  
      versionCode buildVersionCode
  
      versionName buildVersionName
  
      multiDexEnabled true
  
      renderscriptTargetApi 19
  
      renderscriptSupportModeEnabled true
  
  
  
  
  
  }
  
  
  
  signingConfigs {
  
      ....
  
  }
  
  
  
  lintOptions {
  
      abortOnError false        // true by default
  
      checkAllWarnings false
  
      checkReleaseBuilds false
  
      ignoreWarnings true       // false by default
  
      quiet true                // false by default
  
  }
  
  
  
  sourceSets {
  
      main.jni.srcDirs = []
  
      main.jniLibs.srcDirs = ['libs']
  
  }
  
  
  
  buildTypes {
  
      release {
  
          minifyEnabled true
  
          debuggable false
  
          signingConfig signingConfigs.release
  
          proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
  
  
  
          applicationVariants.all { variant ->
  
              variant.outputs.each { output ->
  
                  output.outputFile = new File(output.outputFile.parent,
  
                          output.outputFile.name.replace("-release", "-release-" + buildVersionName + "-" + buildVersionCode)
  
                  )
  
              }
  
          }
  
      }
  
  
  
      debug {
  
          debuggable true
  
          zipAlignEnabled true
  
          applicationIdSuffix ".debug"
  
      }
  
  
  
      productFlavors {
  
          arm7 {
  
              // in the future, ndk.abiFilter might also work
  
              ndk {
  
                  abiFilter 'armeabi-v7a'
  
              }
  
          }
  
          arm8 {
  
              ndk {
  
                  abiFilters 'arm64-v8a'
  
              }
  
          }
  
          arm {
  
              ndk {
  
                  abiFilter 'armeabi'
  
              }
  
          }
  
          x86 {
  
              ndk {
  
                  abiFilter 'x86'
  
              }
  
          }
  
          x86_64 {
  
              ndk {
  
                  abiFilter 'x86_64'
  
              }
  
          }
  
          mips {
  
              ndk {
  
                  abiFilters 'mips', 'mips64'
  
              }
  
          }
  
          universal {
  
              ndk {
  
                  abiFilters 'mips', 'mips64', 'x86', 'x86_64'
  
              }
  
          }
  
      }
  
  }
  
  
  
  lintOptions {
  
      abortOnError false
  
      checkReleaseBuilds false
  
      checkAllWarnings true
  
      htmlReport true
  
      htmlOutput file("lint-report.html")
  
      checkReleaseBuilds true
  
  
  
      disable 'MissingTranslation'
  
      disable 'UnusedResources'
  
      disable 'IconLauncherShape'
  
      disable 'GoogleAppIndexingApiWarning'
  
      disable 'SelectableText'
  
      error 'CommitTransaction'
  
      error 'InconsistentArrays'
  
      error 'Registered'
  
      error 'ManifestOrder'
  
  }
  
  
  
  }
  
  
  
  play {
  
  track = 'alpha'
  
  }
  
  
  
  dependencies {
  
  compile fileTree(dir: 'libs', include: ['.jar', '.so'])
  
  compile files('libs/javacpp.jar')
  
  compile files('libs/javacv.jar')
  
  
  
  compile project(':camera')
  
  compile project(':VideoRecorder')
  
  
  
  compile("com.android.support:appcompat-v7:$SupportVersion") {
  
      exclude group: 'com.android.support', module: 'support-v4'
  
      exclude group: 'com.android.support', module: 'support-annotations'
  
  }
  
  compile("com.android.support:cardview-v7:$SupportVersion") {
  
      exclude group: 'com.android.support', module: 'support-annotations'
  
  }
  
  compile("com.android.support:design:$SupportVersion") {
  
      exclude group: 'com.android.support', module: 'support-core-ui'
  
      exclude group: 'com.android.support', module: 'appcompat-v7'
  
      exclude group: 'com.android.support', module: 'support-v4'
  
  }
  
  compile("com.android.support:support-v4:$SupportVersion") {
  
      exclude group: 'com.android.support', module: 'support-media-compat'
  
      exclude group: 'com.android.support', module: 'support-compat'
  
  }
  
  compile('com.android.support:multidex:1.0.1') {
  
      exclude group: 'com.android.support', module: 'support-vector-drawable'
  
  }
  
  
  
  compile(group: 'org.bytedeco', name: 'javacv-platform', version: '1.3') {
  
      exclude group: 'org.bytedeco.javacpp-presets'
  
  }
  
  compile group: 'org.bytedeco.javacpp-presets', name: 'ffmpeg', version: '3.2.1-1.3'
  
  compile group: 'org.bytedeco.javacpp-presets', name: 'ffmpeg', version: '3.2.1-1.3', classifier: 'android-arm'
  
  
  
  compile "com.google.code.gson:gson:$GSonVersion"
  
  compile "com.squareup.okhttp3:okhttp:$OkHttpVersion"
  
  compile "com.squareup.retrofit2:retrofit:$RetrofitVersion"
  
  compile "com.facebook.android:facebook-android-sdk:$FacebookVersion"
  
  
  
  
  
  compile('com.crashlytics.sdk.android:crashlytics:2.6.8@aar') {
  
      transitive = true;
  
  }
  
  compile('com.twitter.sdk.android:twitter:2.3.0@aar') {
  
      transitive = true;
  
  }
  
  compile 'com.davemorrissey.labs:subsampling-scale-image-view:3.5.0'
  
  compile 'com.github.bumptech.glide:glide:3.7.0'
  
  compile 'de.hdodenhof:circleimageview:2.0.0'
  
  compile 'com.wdullaer:materialdatetimepicker:2.3.0'
  
  compile 'com.github.zhaokaiqiang.klog:library:1.4.0'
  
  compile 'com.github.filippudak.progresspieview:library:1.0.4'
  
  compile 'com.daimajia.swipelayout:library:1.2.0@aar'
  
  compile 'com.amazonaws:aws-android-sdk-s3:2.4.7'
  
  compile 'io.paperdb:paperdb:1.5'
  
  compile 'org.greenrobot:eventbus:3.0.0'
  
  compile 'com.jakewharton:butterknife:8.4.0'
  
  compile 'com.flipboard:bottomsheet-core:1.5.0'
  
  compile 'com.flipboard:bottomsheet-commons:1.5.0'
  
  compile 'com.yqritc:android-scalablevideoview:1.0.4'
  
  compile 'com.github.bumptech.glide:okhttp3-integration:1.4.0@aar'
  
  compile 'com.google.android.gms:play-services-gcm:11.0.4'
  
  compile 'me.relex:circleindicator:1.1.8@aar'
  
  compile 'com.github.ihsanbal:scissors:1.1.3'
  
  compile 'org.zakariya.stickyheaders:stickyheaders:0.7.5'
  
  compile 'com.parse.bolts:bolts-android:1.4.0'
  
  compile 'com.parse:parse-android:1.15.8'
  
  compile 'com.getbase:floatingactionbutton:1.10.1'
  
  compile 'com.github.wooplr:Spotlight:1.2.3'
  
  compile 'com.adjust.sdk:adjust-android:4.7.0'
  
  compile 'com.google.android.gms:play-services-analytics:11.0.4'
  
  compile 'com.makeramen:roundedimageview:2.3.0'
  
  compile 'com.squareup.okhttp3:logging-interceptor:3.3.1'
  
  compile 'com.github.castorflex.verticalviewpager:library:19.0.1'
  
  annotationProcessor 'com.jakewharton:butterknife-compiler:8.4.0'
  
  compile 'jp.wasabeef:blurry:2.1.1'
  
  compile 'com.writingminds:FFmpegAndroid:0.3.2'
  
  
  
  }