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• FFmpeg mp4 encoder for html-android

  25 mai 2017, par Dell Watson

  Hello I’m trying to put video .mp4 auto-captured by my webcam using ffmpeg into HTML (running ffmpeg in desktop-linux), and then activated my localhost so my android will able to see it.

  the video.mp4 was able to run in linux, and in html-desktop.

  the video in my android-browser(html-android) WAS ABLE to play too BUT it’s all white and pixels error, so it’s a fail.

  I thought because android has difference surface because in my desktop it runs perfectly, then i keep searching and trying with ogv/webm.

  In the end, I just use a downloaded another mp4 and it runs perfectly tho.
  now I think the problem was coming from my mp4-webcam created by ffmpeg(run in cmd)

  I compare a mp4-webcam vs mp4-downloaded

  5sec vs 1min,

  Data-rate : 16477kbps vs 613kbps

  framerate : 30frm/s vs 23frm/s

  size : 9MB vs 5 MB

  even tho it’s only 5sec video by webcam, it still has larger data than a 1min video-downloaded maybe it was because without conversion.

  but the question, is that the reason of the problem ? android-html(google chrome) wasn’t able to display and make a dead pixels since in desktop it runs. it shouldn’t be the problem right ?

  I really need to transfer webcam-record into android-surface (my web-app).

  I have no idea to fix it, any advice ? I’ve been searching a lot. Maybe there was another problem I do not know yet.

  EDIT : my cmd ffmpeg run : ffmpeg -y -f v4l2 -i /dev/video1 -codec:v libx264 -qp 0 -t 0:00:05 hss.mp4

  EDIT 2 : my 2nd thought because ffmpeg encoder that I used(libx264) isnot support for android. but i still no idea

• Video conversion in xamarin.android

  7 septembre 2016, par David Barishev

  Im looking for a way to extract audio from mp4 file, and save it as a mp3 file.
  My platform is latest xamarin.android.Potentially a FFmpeg wrapper of some sort.

  I have researched quite a bit and found out about these libraries :

  • https://github.com/leye0/XamarinAndroidFFmpeg
  • https://github.com/neurospeech/xamarin-android-ffmpeg

  But both of them look kinda dead, and i couldn’t get them to run (I have opened an issues on both of them, no response yet).

  Anyone knows a supported library ? If it’s available through nuget it would be perfect.If no library is available, are there other possible ways ?

• java.lang.UnsatisfiedLinkError : com.android.tools.fd.runtime.IncrementalClassLoader

  16 novembre 2016, par Macdroid Solution

  I have tried to implement Android-FFmpeg-Images-Video android studio project example from
  reference link.

  When I try to run the android application then here it will give error

  java.lang.UnsatisfiedLinkError : com.android.tools.fd.runtime. IncrementalClassLoader$DelegateClassLoader nativeLibraryDirectories=[/data/data/com.catcry.ffmpeg/lib, /vendor/lib,/system/lib]]] couldn’t find "libffmpeg-jni.so"

  static {
  
      System.loadLibrary("ffmpeg");
  
      System.loadLibrary("ffmpeg-jni");
  
  }

  This is my build.gradle

  apply plugin: 'com.android.application'
  
  
  
  android {
  
  compileSdkVersion 23
  
  buildToolsVersion "23.0.0"
  
  
  
  defaultConfig {
  
      applicationId "com.example.ffmpeg"
  
      minSdkVersion 14
  
      targetSdkVersion 23
  
      multiDexEnabled true
  
  }
  
  
  
  buildTypes {
  
      release {
  
          minifyEnabled false
  
          proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
  
      }
  
  }
  
  sourceSets {
  
      main {
  
          res.srcDirs = ['src/main/res']
  
          jniLibs.srcDirs = ['src/main/jniLibs']
  
          jni.srcDirs = [] // This prevents the auto generation of Android.mk
  
      }
  
  }
  
  }
  
  
  
  dependencies {
  
  compile 'com.android.support:support-v4:23.0.0'
  
  compile project(':ffmpeg4android_os')
  
  compile 'com.android.support:multidex:1.0.1'
  
  }

  This is My Directory Structure