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Sur d’autres sites (10868)

  • Error compiling and building DashEncoder code and how to play the .mpd file when generated [closed]

    11 avril 2013, par niuu

    I'm trying to build the DashEncoder code which I downloaded from github https://github.com/slederer/DASHEncoder. Well, I followed all the instructions given in the how to compile dash file. installed Gpac n X264 and compiled both successfully. Then did make of Dashencoder and ran it as ./Dashencoder. But I found some issues in it. Got this log :

    ==========DASH ENCODER===============
    Unknown option in resourcefile : sql-pw :
    current encoder x264
    YES
    x264 encoding @ 300 kbps : Pass 1
    x264 : x264 —profile baseline —preset slow —verbose —fps 24 —vbv-maxrate 300 —vbv-bufsize 600 —scenecut 0 —keyint 48 —output /opt/lampp/htdocs/tests_updates/sintel_trailer_2k_480p24_300kbit.h264 /home/niu/sintel_trailer_2k_480p24.y4m >out.txt 2>&1
    mkdir : cannot create directory

    /opt/lampp/htdocs/tests_updates/sintel_300kbit': File exists
    cp: omitting directory

    /opt/lampp/htdocs/tests_updates/'
    copy audio : cp /opt/lampp/htdocs/tests_updates/ /opt/lampp/htdocs/tests_updates/sintel_300kbit/MP4Box multiplexing Video : /opt/lampp/htdocs/tests_updates/sintel_300kbit/sintel_trailer_2k_480p24_300kbit.h264
    mp4box : MP4Box -add /opt/lampp/htdocs/tests_updates/sintel_300kbit/sintel_trailer_2k_480p24_300kbit.h264 /opt/lampp/htdocs/tests_updates/sintel_300kbit/sintel_trailer_2k_480p24_300kbit.mp4
    AVC-H264 import - frame size 854 x 480 at 24.000 FPS
    AVC Import results : 1253 samples - Slices : 27 I 1226 P 0 B - 1 SEI - 27 IDR
    Saving to /opt/lampp/htdocs/tests_updates/sintel_300kbit/sintel_trailer_2k_480p24_300kbit.mp4 : 0.500 secs Interleaving
    MP4Box multiplexing Audio :/opt/lampp/htdocs/tests_updates/sintel_300kbit/
    mp4box : MP4Box -add /opt/lampp/htdocs/tests_updates/sintel_300kbit/ /opt/lampp/htdocs/tests_updates/sintel_300kbit/sintel_trailer_2k_480p24_300kbit.mp4
    Unknown input file type
    Unknown input file type
    Error importing /opt/lampp/htdocs/tests_updates/sintel_300kbit/ : Bad Parameter
    MP4Box Cleaning ...
    mp4box : MP4Box -no-sys /opt/lampp/htdocs/tests_updates/sintel_300kbit/sintel_trailer_2k_480p24_300kbit.mp4
    Saving /opt/lampp/htdocs/tests_updates/sintel_300kbit/sintel_trailer_2k_480p24_300kbit.mp4 : 0.500 secs Interleaving
    MP4Box segmentation : /opt/lampp/htdocs/tests_updates/sintel_300kbit/sintel_trailer_2k_480p24_300kbit.h264
    mp4box : MP4Box -frag 2000 -dash 2000 -rap -segment-name /opt/lampp/htdocs/tests_updates/sintel_300kbit/sintel /opt/lampp/htdocs/tests_updates/sintel_300kbit/sintel_trailer_2k_480p24_300kbit.mp4
    DASH-ing file : 2.00s segments 2.00s fragments single sidx per segment
    Spliting segments at GOP boundaries
    [DASH] Generating MPD at time 2013-03-16T16:40:03Z
    DASHing file /opt/lampp/htdocs/tests_updates/sintel_300kbit/sintel_trailer_2k_480p24_300kbit.mp4
    terminate called after throwing an instance of 'std::out_of_range'
    what() : basic_string::substr
    Error : Unable to open MPD file !Aborted
    Why is this error at the end ? and also one folder got created in my /opt/lampp/htdocs/tests_updates/sintel_300kbit. which has two types of files : 27 files of .m4s extension 1 file -sintelinit.mp4 1 file- sintel_trailer_2k_480p24_300kbit.mp4 , which when played in vlc player played the video bt no audio ! &

    1 file- sintel_trailer_2k_480p24_300kbit.h264 which cannot be opened.

    No .mpd file was created.

    Also I want to know aft creating that .mpd file how will i be able to test it on my android client say media player.

    I am damn confused with all this happening. Please help

  • exec function not working as expected

    6 mars 2016, par Albert

    I am running a shell function from php to convert a video file to flash once it is uploaded. The exec function is like this :

    exec("ffmpeg -i " . WWW_ROOT . "files" . DS . "videos" . DS . $id . $ext . " -ar 22050 -r 32 -f flv -s 640x480 " . WWW_ROOT . "files" . DS . "videos" . DS . $id . ".flv");

    // if I echo the string it returns:
    // ffmpeg -i /home/vceroot/public_html/example.com/test/intraweb/app/webroot/files/videos/516c1203-0484-417a-b047-5488c40293e9.mpg -ar 22050 -r 32 -f flv -s 640x480 /home/vceroot/public_html/example.com/test/intraweb/app/webroot/files/videos/516c1203-0484-417a-b047-5488c40293e9.flv
    // the locations are correct

    However, it does not convert the video.

    After it uploaded the file, it just goes back to the index action. There is no converted file although the uploaded file is there.

    My permissions on the folder is 755. And the folder owner is apache. I don’t know what else to do. Can anyone assist me ?

    UPDATE

    So I’ve changed my exec query a bit and echoed the output :

    exec("ffmpeg -i " . WWW_ROOT . "files" . DS . "videos" . DS . $id . $ext . " -ar 22050 -r 32 -f flv -s 640x480 " . WWW_ROOT . "files" . DS . "videos" . DS . $id . ".flv 2>&1", $output, $return);
    die(print_r($output));

    This returned the following error :

    Array ( [0] => sh: ffmpeg: command not found ) 1

    So I changed it a bit to this :

    exec("/usr/local/bin/ffmpeg -i " . WWW_ROOT . "files" . DS . "videos" . DS . $id . $ext . " -ar 22050 -r 32 -f flv -s 640x480 " . WWW_ROOT . "files" . DS . "videos" . DS . $id . ".flv 2>&1", $output, $return);
    die(print_r($output));

    And now it returns :

    Array ( [0] => /usr/local/bin/ffmpeg: error while loading shared libraries: libavdevice.so.55: cannot open shared object file: No such file or directory ) 1

    Where do I go from here ?

  • undefined reference to ffmpeg functions in native code using Android Studio 2.2

    12 octobre 2016, par Krzysztof Kansy

    I have a problem with using ffmpeg in Android Studio 2.2 using NDK 13 and new Cmake building system. FFmpeg version is 3.1.4.
    The system I’m working on is Linux Mint 18 64-bit.
    At the build time I’m getting undefined reference error each time I use ffpeg functions.

    My MainActivity.java :

    public class MainActivity extends AppCompatActivity {

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

       // Example of a call to a native method
       TextView tv = (TextView) findViewById(R.id.sample_text);
       tv.setText(stringFromJNI());
       }

       /**
        * A native method that is implemented by the 'native-lib' native library,
        * which is packaged with this application.
        */
       public native String stringFromJNI();

       // Used to load the 'native-lib' library on application startup.
       static {
           System.loadLibrary("native-lib");
       }
    }

    My native class (undefined reference is pointing to av_init_packet(&avPacket)) :

    #include
    #include <string>
    #include <android></android>log.h>
    #include <libavcodec></libavcodec>avcodec.h>


    extern "C"
    jstring
    Java_com_example_tito_jnitest_MainActivity_stringFromJNI(
           JNIEnv* env,
           jobject /* this */) {

       std::string hello = "Hello from C++";

       __android_log_print(ANDROID_LOG_INFO, "JNItest", "Hello from JNI!");

       AVPacket avPacket;
       av_init_packet(&amp;avPacket);

       return env->NewStringUTF(hello.c_str());
    }
    </string>

    build.gradle script

    apply plugin: 'com.android.application'

    android {
       compileSdkVersion 24
       buildToolsVersion "24.0.3"
       defaultConfig {
           applicationId "com.example.tito.jnitest"
           minSdkVersion 19
           targetSdkVersion 24
           versionCode 1
           versionName "1.0"
           testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
           externalNativeBuild {
               cmake {
                   // Passes optional arguments to CMake.
                   cppFlags "-frtti -fexceptions"
                   abiFilters 'armeabi'
               }
           }
       }

       sourceSets {
           main {
               jniLibs.srcDirs = ['/home/tito/AndroidStudioProjects/JNItest/app/src/main/jniLibs']
           }
       }

       buildTypes {
           release {
               minifyEnabled false
               proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
           }
       }
       externalNativeBuild {
           cmake {
               path "CMakeLists.txt"
           }
       }
    }

    dependencies {
       compile fileTree(dir: 'libs', include: ['*.jar'])
       androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
           exclude group: 'com.android.support', module: 'support-annotations'
       })
       compile 'com.android.support:appcompat-v7:24.2.1'
       testCompile 'junit:junit:4.12'
    }

    CMakeLists.txt

    cmake_minimum_required(VERSION 3.4.1)

    include_directories(/home/tito/Android/Sdk/ndk-bundle/sources/ffmpeg-3.1.4/android/${ANDROID_ABI}/include)

    #set(CMAKE_VERBOSE_MAKEFILE on)
    #set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++11")

    add_library( avutil
                SHARED
                IMPORTED )

    set_target_properties(
                   avutil
                   PROPERTIES IMPORTED_LOCATION
                   /home/tito/AndroidStudioProjects/JNItest/app/src/main/jniLibs/${ANDROID_ABI}/libavutil-55.so )

    add_library( swscale
                SHARED
                IMPORTED )

    set_target_properties(
                   swscale
                   PROPERTIES IMPORTED_LOCATION
                   /home/tito/AndroidStudioProjects/JNItest/app/src/main/jniLibs/${ANDROID_ABI}/libswscale-4.so )

    add_library( swresample
                SHARED
                IMPORTED )

    set_target_properties(
                   swresample
                   PROPERTIES IMPORTED_LOCATION
                   /home/tito/AndroidStudioProjects/JNItest/app/src/main/jniLibs/${ANDROID_ABI}/libswresample-2.so )

    add_library( avcodec
                SHARED
                IMPORTED )

    set_target_properties(
                   avcodec
                   PROPERTIES IMPORTED_LOCATION
                   /home/tito/AndroidStudioProjects/JNItest/app/src/main/jniLibs/${ANDROID_ABI}/libavcodec-57.so )

    add_library( avfilter
                SHARED
                IMPORTED )

    set_target_properties(
                   avfilter
                   PROPERTIES IMPORTED_LOCATION
                   /home/tito/AndroidStudioProjects/JNItest/app/src/main/jniLibs/${ANDROID_ABI}/libavfilter-6.so )

    add_library( avformat
                SHARED
                IMPORTED )

    set_target_properties(
                   avformat
                   PROPERTIES IMPORTED_LOCATION
                   /home/tito/AndroidStudioProjects/JNItest/app/src/main/jniLibs/${ANDROID_ABI}/libavformat-57.so )

    add_library( avdevice
                SHARED
                IMPORTED )

    set_target_properties(
                   avdevice
                   PROPERTIES IMPORTED_LOCATION
                   /home/tito/AndroidStudioProjects/JNItest/app/src/main/jniLibs/${ANDROID_ABI}/libavdevice-57.so )

    add_library( native-lib
                SHARED
                src/main/cpp/native-lib.cpp )

    find_library( log-lib
                 log )

    target_link_libraries(native-lib ${log-lib} avutil swscale swresample avcodec avfilter avformat avdevice)

    Build process of ffmpeg seemed to be successful. Here’s my build script :

    #!/bin/bash
    NDK=/home/tito/Android/Sdk/ndk-bundle
    SYSROOT=$NDK/platforms/android-19/arch-arm/
    TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64
    function build_one
    {
    ./configure \
    --prefix=$PREFIX \
    --disable-static \
    --enable-shared \
    --disable-doc \
    --disable-ffmpeg \
    --disable-ffplay \
    --disable-ffprobe \
    --disable-ffserver \
    --disable-doc \
    --cross-prefix=$TOOLCHAIN/bin/arm-linux-androideabi- \
    --target-os=linux \
    --arch=arm \
    --enable-cross-compile \
    --sysroot=$SYSROOT \
    --extra-cflags="-Os -fpic -marm" \
    --extra-ldflags="-marm" \
    $ADDITIONAL_CONFIGURE_FLAG
    make clean
    make
    make install
    }
    CPU=armeabi
    PREFIX=$(pwd)/android/$CPU
    build_one

    One thing I noticed that could indicate that something is wrong with ffmpeg build is warning WARNING: /home/tito/Android/Sdk/ndk-bundle/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-pkg-config not found, library detection may fail. during building. I’m not sure if this may be cause of problems.

    I was trying to build for all of the ABIs, but for now I decided to focus on making just armeabi working. I’m having exact same failure after using e.g. arm64-v8a.

    Finally, here is the gradle console’s content with error :

    Executing tasks: [:app:assembleDebug]

    Configuration on demand is an incubating feature.
    Incremental java compilation is an incubating feature.
    :app:preBuild UP-TO-DATE
    :app:preDebugBuild UP-TO-DATE
    :app:checkDebugManifest
    :app:preReleaseBuild UP-TO-DATE
    :app:prepareComAndroidSupportAnimatedVectorDrawable2421Library UP-TO-DATE
    :app:prepareComAndroidSupportAppcompatV72421Library UP-TO-DATE
    :app:prepareComAndroidSupportSupportCompat2421Library UP-TO-DATE
    :app:prepareComAndroidSupportSupportCoreUi2421Library UP-TO-DATE
    :app:prepareComAndroidSupportSupportCoreUtils2421Library UP-TO-DATE
    :app:prepareComAndroidSupportSupportFragment2421Library UP-TO-DATE
    :app:prepareComAndroidSupportSupportMediaCompat2421Library UP-TO-DATE
    :app:prepareComAndroidSupportSupportV42421Library UP-TO-DATE
    :app:prepareComAndroidSupportSupportVectorDrawable2421Library UP-TO-DATE
    :app:prepareDebugDependencies
    :app:compileDebugAidl UP-TO-DATE
    :app:compileDebugRenderscript UP-TO-DATE
    :app:generateDebugBuildConfig UP-TO-DATE
    :app:generateDebugResValues UP-TO-DATE
    :app:generateDebugResources UP-TO-DATE
    :app:mergeDebugResources UP-TO-DATE
    :app:processDebugManifest UP-TO-DATE
    :app:processDebugResources
    :app:generateDebugSources
    :app:incrementalDebugJavaCompilationSafeguard UP-TO-DATE
    :app:compileDebugJavaWithJavac UP-TO-DATE
    :app:generateJsonModelDebug UP-TO-DATE
    :app:externalNativeBuildDebug
     building /home/tito/AndroidStudioProjects/JNItest/app/build/intermediates/cmake/debug/obj/armeabi/libnative-lib.so
    :app:externalNativeBuildDebug FAILED

    FAILURE: Build failed with an exception.

    * What went wrong:
    Execution failed for task ':app:externalNativeBuildDebug'.
    > Build command failed.
     Error while executing '/home/tito/Android/Sdk/cmake/3.6.3155560/bin/cmake' with arguments {--build /home/tito/AndroidStudioProjects/JNItest/app/.externalNativeBuild/cmake/debug/armeabi --target native-lib}
     [1/2] Building CXX object CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o
     [2/2] Linking CXX shared library ../../../../build/intermediates/cmake/debug/obj/armeabi/libnative-lib.so
     FAILED: : &amp;&amp; /home/tito/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin/clang++  -target armv5te-none-linux-androideabi -gcc-toolchain /home/tito/Android/Sdk/ndk-bundle/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64 --sysroot=/home/tito/Android/Sdk/ndk-bundle/platforms/android-19/arch-arm -fPIC -g -DANDROID -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -march=armv5te -mtune=xscale -msoft-float -fno-integrated-as -mthumb -Wa,--noexecstack -Wformat -Werror=format-security -fno-exceptions -fno-rtti -g -DANDROID -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -march=armv5te -mtune=xscale -msoft-float -fno-integrated-as -mthumb -Wa,--noexecstack -Wformat -Werror=format-security -fno-exceptions -fno-rtti -frtti -fexceptions -O0 -fno-limit-debug-info -O0 -fno-limit-debug-info  -Wl,--build-id -Wl,--warn-shared-textrel -Wl,--fatal-warnings -Wl,--no-undefined -Wl,-z,noexecstack -Qunused-arguments -Wl,-z,relro -Wl,-z,now -Wl,--build-id -Wl,--warn-shared-textrel -Wl,--fatal-warnings -Wl,--no-undefined -Wl,-z,noexecstack -Qunused-arguments -Wl,-z,relro -Wl,-z,now -shared -Wl,-soname,libnative-lib.so -o ../../../../build/intermediates/cmake/debug/obj/armeabi/libnative-lib.so CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o  /home/tito/Android/Sdk/ndk-bundle/platforms/android-19/arch-arm/usr/lib/liblog.so ../../../../src/main/jniLibs/armeabi/libavutil-55.so ../../../../src/main/jniLibs/armeabi/libswscale-4.so ../../../../src/main/jniLibs/armeabi/libswresample-2.so ../../../../src/main/jniLibs/armeabi/libavcodec-57.so ../../../../src/main/jniLibs/armeabi/libavfilter-6.so ../../../../src/main/jniLibs/armeabi/libavformat-57.so ../../../../src/main/jniLibs/armeabi/libavdevice-57.so -lm "/home/tito/Android/Sdk/ndk-bundle/sources/cxx-stl/gnu-libstdc++/4.9/libs/armeabi/libgnustl_static.a" "-latomic" &amp;&amp; :
     /home/tito/AndroidStudioProjects/JNItest/app/src/main/cpp/native-lib.cpp:18: error: undefined reference to 'av_init_packet(AVPacket*)'
     clang++: error: linker command failed with exit code 1 (use -v to see invocation)
     ninja: build stopped: subcommand failed.


    * Try:
    Run with --info or --debug option to get more log output.

    * Exception is:
    org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':app:externalNativeBuildDebug'.
       at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:69)
       at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:46)
       at org.gradle.api.internal.tasks.execution.PostExecutionAnalysisTaskExecuter.execute(PostExecutionAnalysisTaskExecuter.java:35)
       at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:66)
       at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)
       at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:52)
       at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
       at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:53)
       at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
       at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:203)
       at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:185)
       at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.processTask(AbstractTaskPlanExecutor.java:66)
       at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.run(AbstractTaskPlanExecutor.java:50)
       at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:25)
       at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:110)
       at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:37)
       at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:37)
       at org.gradle.execution.DefaultBuildExecuter.access$000(DefaultBuildExecuter.java:23)
       at org.gradle.execution.DefaultBuildExecuter$1.proceed(DefaultBuildExecuter.java:43)
       at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:32)
       at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:37)
       at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:30)
       at org.gradle.initialization.DefaultGradleLauncher$4.run(DefaultGradleLauncher.java:153)
       at org.gradle.internal.Factories$1.create(Factories.java:22)
       at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:91)
       at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:53)
       at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:150)
       at org.gradle.initialization.DefaultGradleLauncher.access$200(DefaultGradleLauncher.java:32)
       at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:98)
       at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:92)
       at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:91)
       at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:63)
       at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:92)
       at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:83)
       at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter.java:99)
       at org.gradle.tooling.internal.provider.runner.BuildModelActionRunner.run(BuildModelActionRunner.java:46)
       at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)
       at org.gradle.tooling.internal.provider.runner.SubscribableBuildActionRunner.run(SubscribableBuildActionRunner.java:58)
       at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)
       at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:48)
       at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:30)
       at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:81)
       at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:46)
       at org.gradle.launcher.daemon.server.exec.ExecuteBuild.doBuild(ExecuteBuild.java:52)
       at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
       at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
       at org.gradle.launcher.daemon.server.exec.WatchForDisconnection.execute(WatchForDisconnection.java:37)
       at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
       at org.gradle.launcher.daemon.server.exec.ResetDeprecationLogger.execute(ResetDeprecationLogger.java:26)
       at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
       at org.gradle.launcher.daemon.server.exec.RequestStopIfSingleUsedDaemon.execute(RequestStopIfSingleUsedDaemon.java:34)
       at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
       at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:74)
       at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:72)
       at org.gradle.util.Swapper.swap(Swapper.java:38)
       at org.gradle.launcher.daemon.server.exec.ForwardClientInput.execute(ForwardClientInput.java:72)
       at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
       at org.gradle.launcher.daemon.server.health.DaemonHealthTracker.execute(DaemonHealthTracker.java:47)
       at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
       at org.gradle.launcher.daemon.server.exec.LogToClient.doBuild(LogToClient.java:60)
       at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
       at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
       at org.gradle.launcher.daemon.server.exec.EstablishBuildEnvironment.doBuild(EstablishBuildEnvironment.java:72)
       at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
       at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
       at org.gradle.launcher.daemon.server.health.HintGCAfterBuild.execute(HintGCAfterBuild.java:41)
       at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
       at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy$1.run(StartBuildOrRespondWithBusy.java:50)
       at org.gradle.launcher.daemon.server.DaemonStateCoordinator$1.run(DaemonStateCoordinator.java:237)
       at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:54)
       at org.gradle.internal.concurrent.StoppableExecutorImpl$1.run(StoppableExecutorImpl.java:40)
    Caused by: org.gradle.internal.UncheckedException: Build command failed.
    Error while executing '/home/tito/Android/Sdk/cmake/3.6.3155560/bin/cmake' with arguments {--build /home/tito/AndroidStudioProjects/JNItest/app/.externalNativeBuild/cmake/debug/armeabi --target native-lib}
    [1/2] Building CXX object CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o
    [2/2] Linking CXX shared library ../../../../build/intermediates/cmake/debug/obj/armeabi/libnative-lib.so
    FAILED: : &amp;&amp; /home/tito/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin/clang++  -target armv5te-none-linux-androideabi -gcc-toolchain /home/tito/Android/Sdk/ndk-bundle/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64 --sysroot=/home/tito/Android/Sdk/ndk-bundle/platforms/android-19/arch-arm -fPIC -g -DANDROID -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -march=armv5te -mtune=xscale -msoft-float -fno-integrated-as -mthumb -Wa,--noexecstack -Wformat -Werror=format-security -fno-exceptions -fno-rtti -g -DANDROID -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -march=armv5te -mtune=xscale -msoft-float -fno-integrated-as -mthumb -Wa,--noexecstack -Wformat -Werror=format-security -fno-exceptions -fno-rtti -frtti -fexceptions -O0 -fno-limit-debug-info -O0 -fno-limit-debug-info  -Wl,--build-id -Wl,--warn-shared-textrel -Wl,--fatal-warnings -Wl,--no-undefined -Wl,-z,noexecstack -Qunused-arguments -Wl,-z,relro -Wl,-z,now -Wl,--build-id -Wl,--warn-shared-textrel -Wl,--fatal-warnings -Wl,--no-undefined -Wl,-z,noexecstack -Qunused-arguments -Wl,-z,relro -Wl,-z,now -shared -Wl,-soname,libnative-lib.so -o ../../../../build/intermediates/cmake/debug/obj/armeabi/libnative-lib.so CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o  /home/tito/Android/Sdk/ndk-bundle/platforms/android-19/arch-arm/usr/lib/liblog.so ../../../../src/main/jniLibs/armeabi/libavutil-55.so ../../../../src/main/jniLibs/armeabi/libswscale-4.so ../../../../src/main/jniLibs/armeabi/libswresample-2.so ../../../../src/main/jniLibs/armeabi/libavcodec-57.so ../../../../src/main/jniLibs/armeabi/libavfilter-6.so ../../../../src/main/jniLibs/armeabi/libavformat-57.so ../../../../src/main/jniLibs/armeabi/libavdevice-57.so -lm "/home/tito/Android/Sdk/ndk-bundle/sources/cxx-stl/gnu-libstdc++/4.9/libs/armeabi/libgnustl_static.a" "-latomic" &amp;&amp; :
    /home/tito/AndroidStudioProjects/JNItest/app/src/main/cpp/native-lib.cpp:18: error: undefined reference to 'av_init_packet(AVPacket*)'
    clang++: error: linker command failed with exit code 1 (use -v to see invocation)
    ninja: build stopped: subcommand failed.

       at org.gradle.internal.UncheckedException.throwAsUncheckedException(UncheckedException.java:45)
       at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:78)
       at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.doExecute(AnnotationProcessingTaskFactory.java:228)
       at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:221)
       at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:210)
       at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:621)
       at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:604)
       at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:80)
       at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:61)
       ... 70 more
    Caused by: Build command failed.
    Error while executing '/home/tito/Android/Sdk/cmake/3.6.3155560/bin/cmake' with arguments {--build /home/tito/AndroidStudioProjects/JNItest/app/.externalNativeBuild/cmake/debug/armeabi --target native-lib}
    [1/2] Building CXX object CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o
    [2/2] Linking CXX shared library ../../../../build/intermediates/cmake/debug/obj/armeabi/libnative-lib.so
    FAILED: : &amp;&amp; /home/tito/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin/clang++  -target armv5te-none-linux-androideabi -gcc-toolchain /home/tito/Android/Sdk/ndk-bundle/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64 --sysroot=/home/tito/Android/Sdk/ndk-bundle/platforms/android-19/arch-arm -fPIC -g -DANDROID -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -march=armv5te -mtune=xscale -msoft-float -fno-integrated-as -mthumb -Wa,--noexecstack -Wformat -Werror=format-security -fno-exceptions -fno-rtti -g -DANDROID -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -march=armv5te -mtune=xscale -msoft-float -fno-integrated-as -mthumb -Wa,--noexecstack -Wformat -Werror=format-security -fno-exceptions -fno-rtti -frtti -fexceptions -O0 -fno-limit-debug-info -O0 -fno-limit-debug-info  -Wl,--build-id -Wl,--warn-shared-textrel -Wl,--fatal-warnings -Wl,--no-undefined -Wl,-z,noexecstack -Qunused-arguments -Wl,-z,relro -Wl,-z,now -Wl,--build-id -Wl,--warn-shared-textrel -Wl,--fatal-warnings -Wl,--no-undefined -Wl,-z,noexecstack -Qunused-arguments -Wl,-z,relro -Wl,-z,now -shared -Wl,-soname,libnative-lib.so -o ../../../../build/intermediates/cmake/debug/obj/armeabi/libnative-lib.so CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o  /home/tito/Android/Sdk/ndk-bundle/platforms/android-19/arch-arm/usr/lib/liblog.so ../../../../src/main/jniLibs/armeabi/libavutil-55.so ../../../../src/main/jniLibs/armeabi/libswscale-4.so ../../../../src/main/jniLibs/armeabi/libswresample-2.so ../../../../src/main/jniLibs/armeabi/libavcodec-57.so ../../../../src/main/jniLibs/armeabi/libavfilter-6.so ../../../../src/main/jniLibs/armeabi/libavformat-57.so ../../../../src/main/jniLibs/armeabi/libavdevice-57.so -lm "/home/tito/Android/Sdk/ndk-bundle/sources/cxx-stl/gnu-libstdc++/4.9/libs/armeabi/libgnustl_static.a" "-latomic" &amp;&amp; :
    /home/tito/AndroidStudioProjects/JNItest/app/src/main/cpp/native-lib.cpp:18: error: undefined reference to 'av_init_packet(AVPacket*)'
    clang++: error: linker command failed with exit code 1 (use -v to see invocation)
    ninja: build stopped: subcommand failed.

       at com.android.build.gradle.tasks.ExternalNativeBuildTaskUtils.executeBuildProcessAndLogError(ExternalNativeBuildTaskUtils.java:233)
       at com.android.build.gradle.tasks.ExternalNativeBuildTask.executeProcessBatch(ExternalNativeBuildTask.java:231)
       at com.android.build.gradle.tasks.ExternalNativeBuildTask.build(ExternalNativeBuildTask.java:163)
       at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:75)
       ... 77 more


    BUILD FAILED

    Total time: 0.723 secs

    Can anyone tell me what I’m doing wrong here ?