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  • Rails using stremio-ffmpeg gem to watermark a movie while uploading

    16 juin 2016, par Felix

    I am using carrierwave to upload a movie to amazon s3 that works perfect.

    Now I want to add a watermark to the movie while uploading or after uploading, I don’t know, what’s the best way ?

    I tried this :

    movie_controller.rb action uploadVideo

    movie = FFMPEG::Movie.new(@vid.video.url)
    

    
puts "........................................"
    
puts movie.inspect
    

    
if @vid.save

    Just to find out if the video is catched from stremio.

    But then I got the error that the movie is not found, the problem is that it doesn’t look in the amazon s3 bucket, it looks on my local server

    No such file or directory - the file '/uploads/tmp/1462954331-3471-8766/VID-20160424-WA0013.mp4' does not exist

    What could be the solution ? or should I do this in carrierwave uploader ?

    UPDATE :

    When I do this after the .save action it looks at amazon s3 bucket .. but also says that the movie isn’t there. But if I call it directly in browser it’s displayed.

    UPDATE Code :

    #Laedt ein Video hoch
    
def uploadMovie
    
  @user = User.find_by_id session[:user_id]
    
  #Holt alle Channels für die er eine Berechtigung hat (Eingeloggter user)
    
  @user = User.find_by_id session[:user_id]
    
  @knowledgeproviderList = @user.knowledgeprovider
    
  @channels = Channel.where(knowledgeprovider_id:     @knowledgeproviderList.pluck(:id))
    
  @vid = Movie.new(movies_params)
    
  @channel = Channel.find(params[:vid][:channel_id])
    
  @vid.channel = @channel
    

    
  #Fügt dem Movie einen Tag hinzu
    
  createTag params
    
  createCategory params
    

    

    

    
  if @vid.save
    
    flash[:notice] = t("flash.saved")
    

    
    #movie = FFMPEG::Movie.new(@vid.video.url)
    

    
    #puts "........................................"
    
    #puts movie.inspect
    

    
    redirect_to :action => :add
    
   else
    
     redirect_to :action => :add
    
  end
    
 end

    Update error :

    movie = FFMPEG::Movie.new(@vid.video.current_path)
    

    
options = {watermark: "mages/header.png", resolution: "640x360", watermark_filter: { position: "RT", padding_x: 10, padding_y: 10 } }
    
movie.transcode("movie.flv", options)

    enter image description here

    Update :
    Added the code in the uploader :

      process :watermark_movie
    

    
     def watermark_movie
    
       if self.file.path
    
             options = {watermark: "images/header.png", resolution: "640x360", watermark_filter: { position: "RT", padding_x: 10, padding_y: 10 } }
    
             self.model.file = FFMPEG::Movie.new(self.file.path).transcode("#{root}/#{cache_dir}/#{self.cache_id}/file.mp4", options)
    
        end
    
      end

    Error :

    multi_json (1.12.0) lib/multi_json/adapter.rb:19:in `load'
    
multi_json (1.12.0) lib/multi_json.rb:122:in `load'
    
streamio-ffmpeg (2.0.0) lib/ffmpeg/movie.rb:28:in `initialize'
    
app/uploaders/movie_uploader.rb:40:in `new'
    
app/uploaders/movie_uploader.rb:40:in `watermark_movie'
    
carrierwave (0.11.2) lib/carrierwave/uploader/processing.rb:84:in `block in process!'
    
carrierwave (0.11.2) lib/carrierwave/uploader/processing.rb:76:in `each'
    
carrierwave (0.11.2) lib/carrierwave/uploader/processing.rb:76:in `process!'
    
carrierwave_backgrounder (0.4.2) lib/backgrounder/delay.rb:14:in `process!'
    
carrierwave (0.11.2) lib/carrierwave/uploader/callbacks.rb:18:in `block in with_callbacks'
    
carrierwave (0.11.2) lib/carrierwave/uploader/callbacks.rb:18:in `each'
    
carrierwave (0.11.2) lib/carrierwave/uploader/callbacks.rb:18:in `with_callbacks'
    
carrierwave (0.11.2) lib/carrierwave/uploader/cache.rb:134:in `cache!'
    
carrierwave (0.11.2) lib/carrierwave/mount.rb:329:in `cache'
    
carrierwave (0.11.2) lib/carrierwave/mount.rb:163:in `video='
    
carrierwave (0.11.2) lib/carrierwave/orm/activerecord.rb:39:in `video='
    
activerecord (4.2.1) lib/active_record/attribute_assignment.rb:54:in `public_send'
    
activerecord (4.2.1) lib/active_record/attribute_assignment.rb:54:in `_assign_attribute'
    
activerecord (4.2.1) lib/active_record/attribute_assignment.rb:41:in `block in assign_attributes'
    
actionpack (4.2.1) lib/action_controller/metal/strong_parameters.rb:183:in `each_pair'
    
actionpack (4.2.1) lib/action_controller/metal/strong_parameters.rb:183:in `each_pair'
    
activerecord (4.2.1) lib/active_record/attribute_assignment.rb:35:in `assign_attributes'
    
activerecord (4.2.1) lib/active_record/core.rb:559:in `init_attributes'
    
activerecord (4.2.1) lib/active_record/core.rb:281:in `initialize'
    
activerecord (4.2.1) lib/active_record/inheritance.rb:61:in `new'
    
activerecord (4.2.1) lib/active_record/inheritance.rb:61:in `new'
    
app/controllers/movies_controller.rb:71:in `uploadMovie'
    
actionpack (4.2.1) lib/action_controller/metal/implicit_render.rb:4:in `send_action'
    
actionpack (4.2.1) lib/abstract_controller/base.rb:198:in `process_action'
    
actionpack (4.2.1) lib/action_controller/metal/rendering.rb:10:in `process_action'
    
actionpack (4.2.1) lib/abstract_controller/callbacks.rb:20:in `block in process_action'
    
activesupport (4.2.1) lib/active_support/callbacks.rb:117:in `call'
    
activesupport (4.2.1) lib/active_support/callbacks.rb:117:in `call'
    
activesupport (4.2.1) lib/active_support/callbacks.rb:555:in `block (2 levels) in compile'
    
activesupport (4.2.1) lib/active_support/callbacks.rb:505:in `call'
    
activesupport (4.2.1) lib/active_support/callbacks.rb:505:in `call'
    
activesupport (4.2.1) lib/active_support/callbacks.rb:92:in `_run_callbacks'
    
activesupport (4.2.1) lib/active_support/callbacks.rb:776:in `_run_process_action_callbacks'
    
activesupport (4.2.1) lib/active_support/callbacks.rb:81:in `run_callbacks'
    
actionpack (4.2.1) lib/abstract_controller/callbacks.rb:19:in `process_action'
    
actionpack (4.2.1) lib/action_controller/metal/rescue.rb:29:in `process_action'
    
actionpack (4.2.1) lib/action_controller/metal/instrumentation.rb:32:in `block in process_action'
    
activesupport (4.2.1) lib/active_support/notifications.rb:164:in `block in instrument'
    
activesupport (4.2.1) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
    
activesupport (4.2.1) lib/active_support/notifications.rb:164:in `instrument'
    
actionpack (4.2.1) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
    
actionpack (4.2.1) lib/action_controller/metal/params_wrapper.rb:250:in `process_action'
    
activerecord (4.2.1) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
    
actionpack (4.2.1) lib/abstract_controller/base.rb:137:in `process'
    
actionview (4.2.1) lib/action_view/rendering.rb:30:in `process'
    
actionpack (4.2.1) lib/action_controller/metal.rb:196:in `dispatch'
    
actionpack (4.2.1) lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
    
actionpack (4.2.1) lib/action_controller/metal.rb:237:in `block in action'
    
actionpack (4.2.1) lib/action_dispatch/routing/route_set.rb:74:in `call'
    
actionpack (4.2.1) lib/action_dispatch/routing/route_set.rb:74:in `dispatch'
    
actionpack (4.2.1) lib/action_dispatch/routing/route_set.rb:43:in `serve'
    
actionpack (4.2.1) lib/action_dispatch/journey/router.rb:43:in `block in serve'
    
actionpack (4.2.1) lib/action_dispatch/journey/router.rb:30:in `each'
    
actionpack (4.2.1) lib/action_dispatch/journey/router.rb:30:in `serve'
    
actionpack (4.2.1) lib/action_dispatch/routing/route_set.rb:819:in `call'
    
rack (1.6.4) lib/rack/etag.rb:24:in `call'
    
rack (1.6.4) lib/rack/conditionalget.rb:38:in `call'
    
rack (1.6.4) lib/rack/head.rb:13:in `call'
    
actionpack (4.2.1) lib/action_dispatch/middleware/params_parser.rb:27:in `call'
    
actionpack (4.2.1) lib/action_dispatch/middleware/flash.rb:260:in `call'
    
rack (1.6.4) lib/rack/session/abstract/id.rb:225:in `context'
    
rack (1.6.4) lib/rack/session/abstract/id.rb:220:in `call'
    
actionpack (4.2.1) lib/action_dispatch/middleware/cookies.rb:560:in `call'
    
activerecord (4.2.1) lib/active_record/query_cache.rb:36:in `call'
    
activerecord (4.2.1) lib/active_record/connection_adapters/abstract/connection_pool.rb:649:in `call'
    
activerecord (4.2.1) lib/active_record/migration.rb:378:in `call'
    
actionpack (4.2.1) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
    
activesupport (4.2.1) lib/active_support/callbacks.rb:88:in `call'
    
activesupport (4.2.1) lib/active_support/callbacks.rb:88:in `_run_callbacks'
    
activesupport (4.2.1) lib/active_support/callbacks.rb:776:in `_run_call_callbacks'
    
activesupport (4.2.1) lib/active_support/callbacks.rb:81:in `run_callbacks'
    
actionpack (4.2.1) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
    
actionpack (4.2.1) lib/action_dispatch/middleware/reloader.rb:73:in `call'
    
actionpack (4.2.1) lib/action_dispatch/middleware/remote_ip.rb:78:in `call'
    
actionpack (4.2.1) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
    
web-console (2.3.0) lib/web_console/middleware.rb:20:in `block in call'
    
web-console (2.3.0) lib/web_console/middleware.rb:18:in `catch'
    
web-console (2.3.0) lib/web_console/middleware.rb:18:in `call'
    
actionpack (4.2.1) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
    
railties (4.2.1) lib/rails/rack/logger.rb:38:in `call_app'
    
railties (4.2.1) lib/rails/rack/logger.rb:20:in `block in call'
    
activesupport (4.2.1) lib/active_support/tagged_logging.rb:68:in `block in tagged'
    
activesupport (4.2.1) lib/active_support/tagged_logging.rb:26:in `tagged'
    
activesupport (4.2.1) lib/active_support/tagged_logging.rb:68:in `tagged'
    
railties (4.2.1) lib/rails/rack/logger.rb:20:in `call'
    
actionpack (4.2.1) lib/action_dispatch/middleware/request_id.rb:21:in `call'
    
rack (1.6.4) lib/rack/methodoverride.rb:22:in `call'
    
rack (1.6.4) lib/rack/runtime.rb:18:in `call'
    
activesupport (4.2.1) lib/active_support/cache/strategy/local_cache_middleware.rb:28:in `call'
    
rack (1.6.4) lib/rack/lock.rb:17:in `call'
    
actionpack (4.2.1) lib/action_dispatch/middleware/static.rb:113:in `call'
    
rack (1.6.4) lib/rack/sendfile.rb:113:in `call'
    
railties (4.2.1) lib/rails/engine.rb:518:in `call'
    
railties (4.2.1) lib/rails/application.rb:164:in `call'
    
rack (1.6.4) lib/rack/lock.rb:17:in `call'
    
rack (1.6.4) lib/rack/content_length.rb:15:in `call'
    
rack (1.6.4) lib/rack/handler/webrick.rb:88:in `service'
    
/home/felix/.rvm/rubies/ruby-2.0.0-p643/lib/ruby/2.0.0/webrick/httpserver.rb:138:in `service'
    
/home/felix/.rvm/rubies/ruby-2.0.0-p643/lib/ruby/2.0.0/webrick/httpserver.rb:94:in `run'
    
/home/felix/.rvm/rubies/ruby-2.0.0-p643/lib/ruby/2.0.0/webrick/server.rb:295:in `block in start_thread'

    UPDATE — Movie Uploader

    # encoding: utf-8
    
class MovieUploader < CarrierWave::Uploader::Base
    

    
  # Include RMagick or MiniMagick support:
    
  # include CarrierWave::RMagick
    
  include CarrierWave::MiniMagick
    
  include CarrierWave::Video
    
  include CarrierWave::Video::Thumbnailer
    
  include CarrierWave::Backgrounder::Delay
    

    
  require 'rubygems'
    
  require 'streamio-ffmpeg'
    

    
  # Choose what kind of storage to use for this uploader:
    
  storage :fog
    

    
  # Override the directory where uploaded files will be stored.
    
  # This is a sensible default for uploaders that are meant to be mounted:
    
  def store_dir
    
    "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
    
  end
    

    
  process :watermark_movie
    

    
  def watermark_movie
    
    puts "ssssssssssssssssssssssssssssssssss"
    
    puts self.file.inspect
    

    
    if self.file.path
    
      options = {watermark: "http://felix-hohlwegler.de/holz-soft/include/designs/design13/images/header.png", resolution: "640x360", watermark_filter: { position: "RT", padding_x: 10, padding_y: 10 } }
    
      self.model.file = FFMPEG::Movie.new(self.file.path).transcode("#{root}/#{cache_dir}/#{self.cache_id}/file.mp4", options)
    
    end
    
  end
    

    
  version :thumb do
    
    process thumbnail: [{format: 'png', quality: 10, size: 1200, strip: false, seek: 10, logger: Rails.logger}]
    
    def full_filename for_file
    
      png_name for_file, version_name
    
    end
    
  end
    

    
  def png_name for_file, version_name
    
    %Q{#{version_name}_#{for_file.chomp(File.extname(for_file))}.png}
    
  end
    

    

    
  # Add a white list of extensions which are allowed to be uploaded.
    
  # For images you might use something like this:
    
   def extension_white_list
    
     %w(mov avi mkv mpeg mpeg2 mp4 3gp)
    
   end
    
end

  • Unable to integrate ffmpeg as a native dependency for an Android NDK project

    24 avril 2016, par mmark

    I have an Android NDK project which consists entirely of C/C++ code, and it basically processes images without using any external libraries.

    I’m using Android Studio + Gradle NDK Experimental plugin (0.7.0-alpha1).

    Now, I need to integrate ffmpeg as a native library to use it from the C/C++ code in order to decode a H.264 video frame.

    These are the questions I’ve found here regarding this issue :

    Android - Integrating ffmpeg and android-ndk-r9c

    Android NDK w/ ffmpeg library - error running project

    Using FFmpeg native libraries with Android-NDK

    Can not build with prebuilt static libraries using gradle-experimental

    Here is my build.gradle file :

    apply plugin: 'com.android.model.application'
    

    
def ffmpeg_path = file(project(':ffmpeg').projectDir).absolutePath + "/ffmpeg-android"
    

    
model {
    

    
    repositories {
    
        libs(PrebuiltLibraries) {
    
            libavcodec {
    
                headers.srcDir "${ffmpeg_path}/include"
    
                binaries.withType(StaticLibraryBinary) {
    
                    staticLibraryFile = file("${ffmpeg_path}/${targetPlatform.getName()}/lib/libavcodec.a")
    
                }
    
            }
    
            libavutil {
    
                headers.srcDir "${ffmpeg_path}/include"
    
                binaries.withType(StaticLibraryBinary) {
    
                    staticLibraryFile = file("${ffmpeg_path}/${targetPlatform.getName()}/lib/libavutil.a")
    
                }
    
            }
    
            libswresample {
    
                headers.srcDir "${ffmpeg_path}/include"
    
                binaries.withType(StaticLibraryBinary) {
    
                    staticLibraryFile = file("${ffmpeg_path}/${targetPlatform.getName()}/lib/libswresample.a")
    
                }
    
            }
    
            libswscale {
    
                headers.srcDir "${ffmpeg_path}/include"
    
                binaries.withType(StaticLibraryBinary) {
    
                    staticLibraryFile = file("${ffmpeg_path}/${targetPlatform.getName()}/lib/libswscale.a")
    
                }
    
            }
    
            libavformat {
    
                headers.srcDir "${ffmpeg_path}/include"
    
                binaries.withType(StaticLibraryBinary) {
    
                    staticLibraryFile = file("${ffmpeg_path}/${targetPlatform.getName()}/lib/libavformat.a")
    
                }
    
            }
    
            libavdevice {
    
                headers.srcDir "${ffmpeg_path}/include"
    
                binaries.withType(StaticLibraryBinary) {
    
                    staticLibraryFile = file("${ffmpeg_path}/${targetPlatform.getName()}/lib/libavdevice.a")
    
                }
    
            }
    
            libavfilter {
    
                headers.srcDir "${ffmpeg_path}/include"
    
                binaries.withType(StaticLibraryBinary) {
    
                    staticLibraryFile = file("${ffmpeg_path}/${targetPlatform.getName()}/lib/libavfilter.a")
    
                }
    
            }
    
            libpostproc {
    
                headers.srcDir "${ffmpeg_path}/include"
    
                binaries.withType(StaticLibraryBinary) {
    
                    staticLibraryFile = file("${ffmpeg_path}/${targetPlatform.getName()}/lib/libpostproc.a")
    
                }
    
            }
    
        }
    
    }
    

    
    android {
    
        compileSdkVersion = 23
    
        buildToolsVersion = "23.0.2"
    

    
        defaultConfig.with {
    
            applicationId = "com.example.hellojni"
    
            minSdkVersion.apiLevel = 4
    
            targetSdkVersion.apiLevel = 23
    
        }
    
    }
    

    
    /*
    
     * native build settings
    
     */
    
    android.ndk {
    
        moduleName = "hello-jni"
    
        platformVersion = 9 //same as minSdkVersion.apiLevel for better compatibility
    
        stl    = "c++_static"
    
        abiFilters.addAll(["armeabi", "armeabi-v7a", "x86"]) //filtering ABIs on the ones Google Play Games library is compatible with.
    
    }
    
    android.buildTypes {
    
        release {
    
            minifyEnabled = false
    
            proguardFiles.add(file('proguard-rules.txt'))
    
        }
    
    }
    

    
    android.sources {
    
        main {
    
            jni {
    
                dependencies {
    
                    library "libavcodec" linkage "static"
    
                    library "libavutil" linkage "static"
    
                    library "libswresample" linkage "static"
    
                    library "libswscale" linkage "static"
    
                    library "libavformat" linkage "static"
    
                    library "libavdevice" linkage "static"
    
                    library "libavfilter" linkage "static"
    
                    library "libpostproc" linkage "static"
    
                }
    
            }
    
        }
    
    }
    

    
}

    I based on this sample from Google which integrates an external native library.

    This is the ffmpeg project I compiled before importing it into mine :
    https://github.com/WritingMinds/ffmpeg-android

    I’ve added all the .a and .h files and I’m able to import the headers in my C/C++ code, but when I try to compile it I get the following error :

    /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(utils.o):utils.c:function try_decode_frame: error: undefined reference to 'avpriv_h264_has_num_reorder_frames'
    
/Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(utils.o):utils.c:function compute_pkt_fields: error: undefined reference to 'avpriv_h264_has_num_reorder_frames'
    
/Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(utils.o):utils.c:function parse_packet: error: undefined reference to 'av_parser_parse2'
    
/Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(utils.o):utils.c:function parse_packet: error: undefined reference to 'av_parser_close'
    
/Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(utils.o):utils.c:function read_frame_internal: error: undefined reference to 'av_parser_init'
    
/Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(utils.o):utils.c:function avformat_find_stream_info: error: undefined reference to 'av_parser_init'
    
/Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(utils.o):utils.c:function avformat_find_stream_info: error: undefined reference to 'avcodec_pix_fmt_to_codec_tag'
    
/Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(utils.o):utils.c:function avformat_find_stream_info: error: undefined reference to 'avpriv_get_raw_pix_fmt_tags'
    
/Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(utils.o):utils.c:function ff_stream_add_bitstream_filter: error: undefined reference to 'av_bitstream_filter_init'
    
/Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(utils.o):utils.c:function ff_stream_add_bitstream_filter: error: undefined reference to 'av_bitstream_filter_close'
    
/Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(utils.o):utils.c:function av_apply_bitstream_filters: error: undefined reference to 'av_bitstream_filter_filter'
    
/Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(aadec.o):aadec.c:function aa_read_packet: error: undefined reference to 'av_tea_init'
    
/Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(aadec.o):aadec.c:function aa_read_packet: error: undefined reference to 'av_tea_crypt'
    
/Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(aadec.o):aadec.c:function aa_read_header: error: undefined reference to 'av_tea_alloc'
    
/Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(aadec.o):aadec.c:function aa_read_header: error: undefined reference to 'av_tea_init'
    
/Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(aadec.o):aadec.c:function aa_read_header: error: undefined reference to 'av_tea_crypt'
    
/Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(ac3dec.o):ac3dec.c:function ac3_eac3_probe.isra.0: error: undefined reference to 'avpriv_ac3_parse_header'
    
/Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(adtsenc.o):adtsenc.c:function adts_write_header: error: undefined reference to 'avpriv_mpeg4audio_get_config'
    
/Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(adtsenc.o):adtsenc.c:function adts_write_header: error: undefined reference to 'avpriv_copy_pce_data'
    
/Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(asfcrypt.o):asfcrypt.c:function ff_asfcrypt_dec: error: undefined reference to 'av_rc4_alloc'
    
/Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(asfcrypt.o):asfcrypt.c:function ff_asfcrypt_dec: error: undefined reference to 'av_rc4_init'
    
/Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(asfcrypt.o):asfcrypt.c:function ff_asfcrypt_dec: error: undefined reference to 'av_rc4_crypt'
    
/Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(asfcrypt.o):asfcrypt.c:function ff_asfcrypt_dec: error: undefined reference to 'av_rc4_init'
    
/Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(asfcrypt.o):asfcrypt.c:function ff_asfcrypt_dec: error: undefined reference to 'av_rc4_crypt'
    
/Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(matroska.o):matroska.c:function ff_mkv_stereo3d_conv: error: undefined reference to 'av_stereo3d_alloc'
    
/Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(nut.o):nut.c:function ff_nut_add_sp: error: undefined reference to 'av_tree_node_alloc'
    
/Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(nut.o):nut.c:function ff_nut_add_sp: error: undefined reference to 'av_tree_insert'
    
/Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(nut.o):nut.c:function ff_nut_free_sp: error: undefined reference to 'av_tree_enumerate'
    
/Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(nut.o):nut.c:function ff_nut_free_sp: error: undefined reference to 'av_tree_destroy'
    
Error:error: ld returned 1 exit status
    
Error:Execution failed for task ':app:linkHello-jniArmeabi-v7aDebugSharedLibrary'.
    
> A build operation failed.
    
      Linker failed while linking libhello-jni.so.
    
  See the complete log at: file:///Users/marcos/Documents/Android/fdecoder/app/build/tmp/linkHello-jniArmeabi-v7aDebugSharedLibrary/output.txt
    
Information:BUILD FAILED
    
Information:Total time: 14.993 secs
    
Information:2 errors
    
Information:0 warnings
    
Information:See complete output in console

    There’s obviously something I’m not importing properly, but can’t figure exactly what’s missing.

  • Simulate packet loss in internet video streaming

    31 décembre 2015, par james

    I have encoded H.264 video using FFmpeg. I want to apply packet loss model like Gilbert Eliot model to depict video transmission over unreliable network.Like in this thread TV noise is simulated. But noise on the internet is different. So is there a way to simulate packet loss/ noise for internet video streaming using FFmpeg or MATLAB ?

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