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-
ffmpeg grap a image from webcarmera issue from python invoking
5 août 2021, par neil2021I meet an issue that cmd of ffmpeg is working from dos command line but not working from python code with error :
not working from python invoking


cmd :

ffmpeg -f dshow -i video="Webcam C170" -frames 1 target.jpg

is working well from windows dos command line
working well from dos command line
but failed when using os.system(cmd) or os.popen(cmd) or subprocess.popen(cmd) not working from python invoking

I do not know why the ffmpeg is not working while invoking by python code.


The error is as following :


Input #0, dshow, from 'video=Webcam C170':
 Duration: N/A, bitrate: N/A
 Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 640x480, 30 fps, 30 tbr, 10000k tbn, 10000k tbc
Stream mapping:
 Stream #0:0 -> #0:0 (rawvideo (native) -> mjpeg (native))
Press [q] to stop, [?] for help
video=Webcam C170: I/O error
[swscaler @ 0000024a6b9a03c0] deprecated pixel format used, make sure you did set range correctly
Output #0, image2, to 'target.jpg' 



I tried to use
os.system(cmd) or subprocess.call(cmd) or os.Popen(cmd) or subprocess.call(cmd)
withcmd = 'ffmpeg -f dshow -i video="Webcam C170" -frames 1 target.jpg' or cmd = ['ffmpeg', '-f', 'dshow', '-i', 'video=Webcam C170', '-frames', '1', target]
all get the error - video=Webcam C170 : I/O error

even if I use
os.system("get_image.bat")
to invoke a dos batch script with contentffmpeg -f dshow -i video="Webcam C170" -frames 1 target.jpg
it still failed with the same errorvideo=Webcam C170: I/O error


It can only succeed when I type this script in dos window with script as following :
ffmpeg -f dshow -i video="Webcam C170" -frames 1 target.jpg


Anyone who have experience for this, please kindly help me out.


-
undefined reference to ffmpeg functions in native code using Android Studio 2.2
12 octobre 2016, par Krzysztof KansyI 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(&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_oneOne 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: : && /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" && :
/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: : && /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" && :
/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: : && /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" && :
/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 secsCan anyone tell me what I’m doing wrong here ?
-
How do I get drawtext filter in ffmpeg to work on ubuntu 22.04 ?
3 décembre 2024, par chovyHere's my script, but no matter what I try the drawtext filter is not enabled :


#!/bin/bash

set -e # Exit on any error

# Define installation directories
INSTALL_DIR="$HOME/ffmpeg_build"
BIN_DIR="$HOME/bin"
SOURCE_DIR="$HOME/ffmpeg_sources"
NUM_CORES=$(nproc)

echo "Creating necessary directories..."
mkdir -p "$INSTALL_DIR" "$BIN_DIR" "$SOURCE_DIR"

# Install required tools and dependencies
echo "Installing build tools and essential libraries..."
sudo apt-get update
sudo apt-get install -y \
 autoconf automake build-essential cmake git-core libass-dev \
 libfreetype6-dev libsdl2-dev libtool libva-dev libvdpau-dev \
 libvorbis-dev libxcb1-dev libxcb-shm0-dev libxcb-xfixes0-dev \
 meson ninja-build pkg-config texinfo wget yasm zlib1g-dev \
 nasm libnuma-dev libfdk-aac-dev libmp3lame-dev libopus-dev \
 libfreetype6 libdrm-dev mercurial

# Remove system-installed x264 and x265 to prevent conflicts
sudo apt-get remove -y libx264-dev libx265-dev x264 x265

# Build dependencies
cd "$SOURCE_DIR"

# Install libx264 (static)
if [ ! -d "$SOURCE_DIR/x264" ]; then
 echo "Building and installing libx264..."
 git clone --branch stable --depth 1 https://code.videolan.org/videolan/x264.git
 cd x264
 make distclean || true
 ./configure --prefix="$INSTALL_DIR" --enable-static --disable-opencl
 make -j$NUM_CORES
 make install
 cd "$SOURCE_DIR"
fi

# Install libx265 (static)
if [ ! -d "$SOURCE_DIR/x265" ]; then
 echo "Building and installing libx265..."
 git clone --depth 1 https://github.com/videolan/x265.git
 cd x265/build/linux
 cmake -G "Unix Makefiles" -DCMAKE_INSTALL_PREFIX="$INSTALL_DIR" \
 -DENABLE_SHARED=OFF -DENABLE_PIC=ON -DENABLE_PKGCONFIG=ON ../../source
 make -j$NUM_CORES
 make install
 cd "$SOURCE_DIR"
fi

# Install libvpx (static)
if [ ! -d "$SOURCE_DIR/libvpx" ]; then
 echo "Building and installing libvpx..."
 git clone --depth 1 https://chromium.googlesource.com/webm/libvpx.git
 cd libvpx
 ./configure --prefix="$INSTALL_DIR" --disable-examples --disable-unit-tests \
 --enable-vp9-highbitdepth --as=yasm --enable-static --enable-pic
 make -j$NUM_CORES
 make install
 cd "$SOURCE_DIR"
fi

# Install libopus (static)
if [ ! -d "$SOURCE_DIR/opus" ]; then
 echo "Building and installing libopus..."
 git clone --depth 1 https://github.com/xiph/opus.git
 cd opus
 ./autogen.sh
 ./configure --prefix="$INSTALL_DIR" --disable-shared
 make -j$NUM_CORES
 make install
 cd "$SOURCE_DIR"
fi

# Install libaom (static)
if [ ! -d "$SOURCE_DIR/aom" ]; then
 echo "Building and installing libaom..."
 git clone --depth 1 https://aomedia.googlesource.com/aom
 mkdir -p aom_build
 cd aom_build
 cmake -G "Unix Makefiles" -DCMAKE_INSTALL_PREFIX="$INSTALL_DIR" \
 -DBUILD_SHARED_LIBS=0 -DENABLE_NASM=1 -DCMAKE_C_FLAGS="-fPIC" ../aom
 make -j$NUM_CORES
 make install
 cd "$SOURCE_DIR"
fi

# Build and install FFmpeg
echo "Building and installing FFmpeg..."
cd "$SOURCE_DIR"
if [ ! -d "$SOURCE_DIR/ffmpeg" ]; then
 git clone --depth 1 https://git.ffmpeg.org/ffmpeg.git ffmpeg
 cd ffmpeg
else
 cd ffmpeg
 git pull
fi

export PKG_CONFIG_PATH="$INSTALL_DIR/lib/pkgconfig:/usr/lib/pkgconfig:/usr/share/pkgconfig:/usr/lib/$(uname -m)-linux-gnu/pkgconfig:$PKG_CONFIG_PATH"

make distclean

./configure \
 --prefix="$INSTALL_DIR" \
 --pkg-config-flags="--static" \
 --extra-cflags="-I$INSTALL_DIR/include" \
 --extra-ldflags="-L$INSTALL_DIR/lib" \
 --extra-libs="-lpthread -lm" \
 --bindir="$BIN_DIR" \
 --enable-gpl \
 --enable-nonfree \
 --enable-libfreetype \
 --enable-libx264 \
 --enable-libvpx \
 --enable-libmp3lame \
 --enable-libopus \
 --enable-libass \
 --enable-libvorbis \
 --enable-libaom \
 --enable-libdrm \
 --enable-version3 \
 --enable-static \
 --disable-shared \
 --enable-small
 
make -j$NUM_CORES
make install

# Add ffmpeg to PATH
echo "export PATH=\"$BIN_DIR:\$PATH\"" >> "$HOME/.bashrc"
source "$HOME/.bashrc"

# Final checks
echo "FFmpeg installation complete. Verifying installation..."
ffmpeg -version




Here is my buildconf which appears correct :


$ ffmpeg -buildconf 

ffmpeg version N-117989-gcb27e478f7 Copyright (c) 2000-2024 the FFmpeg developers
 built with gcc 11 (Ubuntu 11.4.0-1ubuntu1~22.04)
 configuration: --prefix=/usr/local --extra-cflags=-I/home/ubuntu/src/ffmpeg_build/include --extra-ldflags=-L/home/ubuntu/src/ffmpeg_build/lib --bindir=/usr/local/bin --enable-gpl --enable-nonfree --enable-libfreetype --enable-libx264 --enable-libvpx --enable-libmp3lame --enable-libopus --enable-libass --enable-libvorbis --enable-libaom --enable-libdrm --enable-version3 --enable-shared --enable-filter=drawtext libavutil 59. 47.101 / 59. 47.101 libavcodec 61. 26.100 / 61. 26.100 libavformat 61. 9.100 / 61. 9.100 libavdevice 61. 4.100 / 61. 4.100 libavfilter 10. 6.101 / 10. 6.101 libswscale 8. 12.100 / 8. 12.100 libswresample 5. 4.100 / 5. 4.100
 libpostproc 58. 4.100 / 58. 4.100

 configuration: --prefix=/usr/local
 --extra-cflags=-I/home/ubuntu/src/ffmpeg_build/include
 --extra-ldflags=-L/home/ubuntu/src/ffmpeg_build/lib
 --bindir=/usr/local/bin
 --enable-gpl --enable-nonfree --enable-libfreetype --enable-libx264 --enable-libvpx --enable-libmp3lame --enable-libopus --enable-libass --enable-libvorbis --enable-libaom --enable-libdrm --enable-version3 --enable-shared --enable-filter=drawtext



However the filter drawtext is not enabled :


$ ffmpeg -filters | grep drawtext
ffmpeg version N-117989-gcb27e478f7 Copyright (c) 2000-2024 the FFmpeg developers built with gcc 11 (Ubuntu 11.4.0-1ubuntu1~22.04) configuration: --prefix=/usr/local --extra-cflags=-I/home/ubuntu/src/ffmpeg_build/include --extra-ldflags=-L/home/ubuntu/src/ffmpeg_build/lib --bindir=/usr/local/bin --enable-gpl --enable-nonfree --enable-libfreetype --enable-libx264 --enable-libvpx --enable-libmp3lame --enable-libopus --enable-libass --enable-libvorbis --enable-libaom --enable-libdrm --enable-version3 --enable-shared --enable-filter=drawtext libavutil 59. 47.101 / 59. 47.101 libavcodec 61. 26.100 / 61. 26.100 libavformat 61. 9.100 / 61. 9.100 libavdevice 61. 4.100 / 61. 4.100 libavfilter 10. 6.101 / 10. 6.101 libswscale 8. 12.100 / 8. 12.100 libswresample 5. 4.100 / 5. 4.100 libpostproc 58. 4.100 / 58. 4.100