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• Integrating FFMpeg in Native Android Application with C++ results in bunch of errors [closed]

  13 décembre 2024, par BraveEvidence

  I need to integrate ffmpeg in my android app, i don't want to usee ffmpegkit as that is not properly maintained, i cloned ffmpeg-android-maker and then ran ./ffmpeg-android-maker.sh it created build folder and output folder,
The output folder looks like this

  


  

  


  I have created a kotlin android project using android studio, so i have written all the code to pick the video and i have the video uri with me in kotlin, i also added a C++ module with help of Android studio and it did all the configuration in build.gradle and also created CMake file for me.

  


  For now I just want to concentrate on building the android project so forget about writing any C++ code, I then created jniLibs in main folder and in jniLibs I copied arm64-v8a,armeabi-v7a, x86,x86_64 from the output folder of ffmpeg-android-maker and then I want to cpp folder of my android project which is also in main folder and in cpp folder I created include folder and copied libavcodec, libavdevice, libavfilter etc then I updated my CmakeLists.txt to following

  


  cmake_minimum_required(VERSION 3.22.1)

project("myandroidapp")

#set(FFMPEG_LIBS_DIR ${CMAKE_SOURCE_DIR}/src/main/jniLibs)

include_directories(${CMAKE_SOURCE_DIR}/src/main/cpp/include)

set_target_properties(${CMAKE_PROJECT_NAME} PROPERTIES
        LIBRARY_OUTPUT_DIRECTORY ${CMAKE_SOURCE_DIR}/src/main/jniLibs/${ANDROID_ABI}
)

add_library(${CMAKE_PROJECT_NAME} SHARED
    # List C/C++ source files with relative paths to this CMakeLists.txt.
    myandroidapp.cpp)


# Specifies libraries CMake should link to your target library. You
# can link libraries from various origins, such as libraries defined in this
# build script, prebuilt third-party libraries, or Android system libraries.
target_link_libraries(${CMAKE_PROJECT_NAME}
    # List libraries link to the target library
    android
    log
        avcodec
        avdevice
        avfilter
        avformat
        avutil
        swresample
        swscale)


  


  Then in build.gradle I did following

  


  externalNativeBuild {
        cmake {
            path = file("src/main/cpp/CMakeLists.txt")
            version = "3.22.1"
        }
    }

    sourceSets {
        getByName("main") {
            jniLibs.srcDirs("src/main/jniLibs")
        }
    }

    packaging {
        jniLibs.pickFirsts.add("lib/arm64-v8a/libavcodec.so")
        jniLibs.pickFirsts.add("lib/arm64-v8a/libavformat.so")
        jniLibs.pickFirsts.add("lib/arm64-v8a/libavutil.so")
        jniLibs.pickFirsts.add("lib/arm64-v8a/libswscale.so")
        jniLibs.pickFirsts.add("lib/armeabi-v7a/libavcodec.so")
        jniLibs.pickFirsts.add("lib/armeabi-v7a/libavformat.so")
        jniLibs.pickFirsts.add("lib/armeabi-v7a/libavutil.so")
        jniLibs.pickFirsts.add("lib/armeabi-v7a/libswscale.so")
        jniLibs.pickFirsts.add("lib/x86/libavcodec.so")
        jniLibs.pickFirsts.add("lib/x86/libavformat.so")
        jniLibs.pickFirsts.add("lib/x86/libavutil.so")
        jniLibs.pickFirsts.add("lib/x86/libswscale.so")
        jniLibs.pickFirsts.add("lib/x86_64/libavcodec.so")
        jniLibs.pickFirsts.add("lib/x86_64/libavformat.so")
        jniLibs.pickFirsts.add("lib/x86_64/libavutil.so")
        jniLibs.pickFirsts.add("lib/x86_64/libswscale.so")
    }


  


  when I try to build my project I get following error

  


  [CXX1429] error when building with cmake using /Users/transformhub/Downloads/mycam/ffmpeg/MyAndroidapp/app/src/main/cpp/CMakeLists.txt: -- Configuring incomplete, errors occurred!
See also "/Users/transformhub/Downloads/mycam/ffmpeg/MyAndroidapp/app/.cxx/Debug/406wr1e2/arm64-v8a/CMakeFiles/CMakeOutput.log".

C++ build system [configure] failed while executing:
    /Users/transformhub/Library/Android/sdk/cmake/3.22.1/bin/cmake \
      -H/Users/transformhub/Downloads/mycam/ffmpeg/MyAndroidapp/app/src/main/cpp \
      -DCMAKE_SYSTEM_NAME=Android \
      -DCMAKE_EXPORT_COMPILE_COMMANDS=ON \
      -DCMAKE_SYSTEM_VERSION=24 \
      -DANDROID_PLATFORM=android-24 \
      -DANDROID_ABI=arm64-v8a \
      -DCMAKE_ANDROID_ARCH_ABI=arm64-v8a \
      -DANDROID_NDK=/Users/transformhub/Library/Android/sdk/ndk/26.1.10909125 \
      -DCMAKE_ANDROID_NDK=/Users/transformhub/Library/Android/sdk/ndk/26.1.10909125 \
      -DCMAKE_TOOLCHAIN_FILE=/Users/transformhub/Library/Android/sdk/ndk/26.1.10909125/build/cmake/android.toolchain.cmake \
      -DCMAKE_MAKE_PROGRAM=/Users/transformhub/Library/Android/sdk/cmake/3.22.1/bin/ninja \
      -DCMAKE_LIBRARY_OUTPUT_DIRECTORY=/Users/transformhub/Downloads/mycam/ffmpeg/MyAndroidapp/app/build/intermediates/cxx/Debug/406wr1e2/obj/arm64-v8a \
      -DCMAKE_RUNTIME_OUTPUT_DIRECTORY=/Users/transformhub/Downloads/mycam/ffmpeg/MyAndroidapp/app/build/intermediates/cxx/Debug/406wr1e2/obj/arm64-v8a \
      -DCMAKE_BUILD_TYPE=Debug \
      -B/Users/transformhub/Downloads/mycam/ffmpeg/MyAndroidapp/app/.cxx/Debug/406wr1e2/arm64-v8a \
      -GNinja
  from /Users/transformhub/Downloads/mycam/ffmpeg/MyAndroidapp/app
CMake Error at CMakeLists.txt:15 (set_target_properties):
  set_target_properties Can not find target to add properties to:
  myandroidapp : com.android.ide.common.process.ProcessException: -- Configuring incomplete, errors occurred!
See also "/Users/transformhub/Downloads/mycam/ffmpeg/MyAndroidapp/app/.cxx/Debug/406wr1e2/arm64-v8a/CMakeFiles/CMakeOutput.log".

C++ build system [configure] failed while executing:
    /Users/transformhub/Library/Android/sdk/cmake/3.22.1/bin/cmake \
      -H/Users/transformhub/Downloads/mycam/ffmpeg/MyAndroidapp/app/src/main/cpp \
      -DCMAKE_SYSTEM_NAME=Android \
      -DCMAKE_EXPORT_COMPILE_COMMANDS=ON \
      -DCMAKE_SYSTEM_VERSION=24 \
      -DANDROID_PLATFORM=android-24 \
      -DANDROID_ABI=arm64-v8a \
      -DCMAKE_ANDROID_ARCH_ABI=arm64-v8a \
      -DANDROID_NDK=/Users/transformhub/Library/Android/sdk/ndk/26.1.10909125 \
      -DCMAKE_ANDROID_NDK=/Users/transformhub/Library/Android/sdk/ndk/26.1.10909125 \
      -DCMAKE_TOOLCHAIN_FILE=/Users/transformhub/Library/Android/sdk/ndk/26.1.10909125/build/cmake/android.toolchain.cmake \
      -DCMAKE_MAKE_PROGRAM=/Users/transformhub/Library/Android/sdk/cmake/3.22.1/bin/ninja \
      -DCMAKE_LIBRARY_OUTPUT_DIRECTORY=/Users/transformhub/Downloads/mycam/ffmpeg/MyAndroidapp/app/build/intermediates/cxx/Debug/406wr1e2/obj/arm64-v8a \
      -DCMAKE_RUNTIME_OUTPUT_DIRECTORY=/Users/transformhub/Downloads/mycam/ffmpeg/MyAndroidapp/app/build/intermediates/cxx/Debug/406wr1e2/obj/arm64-v8a \
      -DCMAKE_BUILD_TYPE=Debug \
      -B/Users/transformhub/Downloads/mycam/ffmpeg/MyAndroidapp/app/.cxx/Debug/406wr1e2/arm64-v8a \
      -GNinja
  from /Users/transformhub/Downloads/mycam/ffmpeg/MyAndroidapp/app
CMake Error at CMakeLists.txt:15 (set_target_properties):
  set_target_properties Can not find target to add properties to:
  myandroidapp
    at com.android.build.gradle.internal.cxx.process.ExecuteProcessKt.execute(ExecuteProcess.kt:288)
    at com.android.build.gradle.internal.cxx.process.ExecuteProcessKt$executeProcess$1.invoke(ExecuteProcess.kt:108)
    at com.android.build.gradle.internal.cxx.process.ExecuteProcessKt$executeProcess$1.invoke(ExecuteProcess.kt:106)
    at com.android.build.gradle.internal.cxx.timing.TimingEnvironmentKt.time(TimingEnvironment.kt:32)
    at com.android.build.gradle.internal.cxx.process.ExecuteProcessKt.executeProcess(ExecuteProcess.kt:106)
    at com.android.build.gradle.internal.cxx.process.ExecuteProcessKt.executeProcess$default(ExecuteProcess.kt:85)
    at com.android.build.gradle.tasks.CmakeQueryMetadataGenerator.executeProcess(CmakeFileApiMetadataGenerator.kt:59)
    at com.android.build.gradle.tasks.ExternalNativeJsonGenerator$configureOneAbi$1$1$3.invoke(ExternalNativeJsonGenerator.kt:247)
    at com.android.build.gradle.tasks.ExternalNativeJsonGenerator$configureOneAbi$1$1$3.invoke(ExternalNativeJsonGenerator.kt:247)
    at com.android.build.gradle.internal.cxx.timing.TimingEnvironmentKt.time(TimingEnvironment.kt:32)
    at com.android.build.gradle.tasks.ExternalNativeJsonGenerator.configureOneAbi(ExternalNativeJsonGenerator.kt:247)
    at com.android.build.gradle.tasks.ExternalNativeJsonGenerator.configure(ExternalNativeJsonGenerator.kt:113)
    at com.android.build.gradle.tasks.ExternalNativeBuildJsonTask.doTaskAction(ExternalNativeBuildJsonTask.kt:89)
    at com.android.build.gradle.internal.tasks.UnsafeOutputsTask$taskAction$$inlined$recordTaskAction$1.invoke(BaseTask.kt:66)
    at com.android.build.gradle.internal.tasks.Blocks.recordSpan(Blocks.java:51)
    at com.android.build.gradle.internal.tasks.UnsafeOutputsTask.taskAction(UnsafeOutputsTask.kt:81)
    at jdk.internal.reflect.GeneratedMethodAccessor172.invoke(Unknown Source)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.base/java.lang.reflect.Method.invoke(Unknown Source)
    at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:125)
    at org.gradle.api.internal.project.taskfactory.StandardTaskAction.doExecute(StandardTaskAction.java:58)
    at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:51)
    at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:29)
    at org.gradle.api.internal.tasks.execution.TaskExecution$3.run(TaskExecution.java:244)
    at org.gradle.internal.operations.DefaultBuildOperationRunner$1.execute(DefaultBuildOperationRunner.java:29)
    at org.gradle.internal.operations.DefaultBuildOperationRunner$1.execute(DefaultBuildOperationRunner.java:26)
    at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:66)
    at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:59)
    at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:157)
    at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:59)
    at org.gradle.internal.operations.DefaultBuildOperationRunner.run(DefaultBuildOperationRunner.java:47)
    at org.gradle.internal.operations.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:68)
    at org.gradle.api.internal.tasks.execution.TaskExecution.executeAction(TaskExecution.java:229)
    at org.gradle.api.internal.tasks.execution.TaskExecution.executeActions(TaskExecution.java:212)
    at org.gradle.api.internal.tasks.execution.TaskExecution.executeWithPreviousOutputFiles(TaskExecution.java:195)
    at org.gradle.api.internal.tasks.execution.TaskExecution.execute(TaskExecution.java:162)
    at org.gradle.internal.execution.steps.ExecuteStep.executeInternal(ExecuteStep.java:105)
    at org.gradle.internal.execution.steps.ExecuteStep.access$000(ExecuteStep.java:44)
    at org.gradle.internal.execution.steps.ExecuteStep$1.call(ExecuteStep.java:59)
    at org.gradle.internal.execution.steps.ExecuteStep$1.call(ExecuteStep.java:56)
    at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:200)
    at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:195)
    at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:66)
    at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:59)
    at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:157)
    at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:59)
    at org.gradle.internal.operations.DefaultBuildOperationRunner.call(DefaultBuildOperationRunner.java:53)
    at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:73)
    at org.gradle.internal.execution.steps.ExecuteStep.execute(ExecuteStep.java:56)
    at org.gradle.internal.execution.steps.ExecuteStep.execute(ExecuteStep.java:44)
    at org.gradle.internal.execution.steps.CancelExecutionStep.execute(CancelExecutionStep.java:41)
    at org.gradle.internal.execution.steps.TimeoutStep.executeWithoutTimeout(TimeoutStep.java:74)
    at org.gradle.internal.execution.steps.TimeoutStep.execute(TimeoutStep.java:55)
    at org.gradle.internal.execution.steps.PreCreateOutputParentsStep.execute(PreCreateOutputParentsStep.java:50)
    at org.gradle.internal.execution.steps.PreCreateOutputParentsStep.execute(PreCreateOutputParentsStep.java:28)
    at org.gradle.internal.execution.steps.RemovePreviousOutputsStep.execute(RemovePreviousOutputsStep.java:67)
    at org.gradle.internal.execution.steps.RemovePreviousOutputsStep.execute(RemovePreviousOutputsStep.java:37)
    at org.gradle.internal.execution.steps.BroadcastChangingOutputsStep.execute(BroadcastChangingOutputsStep.java:61)
    at org.gradle.internal.execution.steps.BroadcastChangingOutputsStep.execute(BroadcastChangingOutputsStep.java:26)
    at org.gradle.internal.execution.steps.CaptureOutputsAfterExecutionStep.execute(CaptureOutputsAfterExecutionStep.java:67)
    at org.gradle.internal.execution.steps.CaptureOutputsAfterExecutionStep.execute(CaptureOutputsAfterExecutionStep.java:45)
    at org.gradle.internal.execution.steps.ResolveInputChangesStep.execute(ResolveInputChangesStep.java:40)
    at org.gradle.internal.execution.steps.ResolveInputChangesStep.execute(ResolveInputChangesStep.java:29)
    at org.gradle.internal.execution.steps.BuildCacheStep.executeWithoutCache(BuildCacheStep.java:189)
    at org.gradle.internal.execution.steps.BuildCacheStep.lambda$execute$1(BuildCacheStep.java:75)
    at org.gradle.internal.Either$Right.fold(Either.java:175)
    at org.gradle.internal.execution.caching.CachingState.fold(CachingState.java:62)
    at org.gradle.internal.execution.steps.BuildCacheStep.execute(BuildCacheStep.java:73)
    at org.gradle.internal.execution.steps.BuildCacheStep.execute(BuildCacheStep.java:48)
    at org.gradle.internal.execution.steps.StoreExecutionStateStep.execute(StoreExecutionStateStep.java:46)
    at org.gradle.internal.execution.steps.StoreExecutionStateStep.execute(StoreExecutionStateStep.java:35)
    at org.gradle.internal.execution.steps.SkipUpToDateStep.executeBecause(SkipUpToDateStep.java:76)
    at org.gradle.internal.execution.steps.SkipUpToDateStep.lambda$execute$2(SkipUpToDateStep.java:54)
    at java.base/java.util.Optional.orElseGet(Unknown Source)
    at org.gradle.internal.execution.steps.SkipUpToDateStep.execute(SkipUpToDateStep.java:54)
    at org.gradle.internal.execution.steps.SkipUpToDateStep.execute(SkipUpToDateStep.java:36)
    at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsFinishedStep.execute(MarkSnapshottingInputsFinishedStep.java:37)
    at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsFinishedStep.execute(MarkSnapshottingInputsFinishedStep.java:27)
    at org.gradle.internal.execution.steps.ResolveIncrementalCachingStateStep.executeDelegate(ResolveIncrementalCachingStateStep.java:49)
    at org.gradle.internal.execution.steps.ResolveIncrementalCachingStateStep.executeDelegate(ResolveIncrementalCachingStateStep.java:27)
    at org.gradle.internal.execution.steps.AbstractResolveCachingStateStep.execute(AbstractResolveCachingStateStep.java:71)
    at org.gradle.internal.execution.steps.AbstractResolveCachingStateStep.execute(AbstractResolveCachingStateStep.java:39)
    at org.gradle.internal.execution.steps.ResolveChangesStep.execute(ResolveChangesStep.java:65)
    at org.gradle.internal.execution.steps.ResolveChangesStep.execute(ResolveChangesStep.java:36)
    at org.gradle.internal.execution.steps.ValidateStep.execute(ValidateStep.java:106)
    at org.gradle.internal.execution.steps.ValidateStep.execute(ValidateStep.java:55)
    at org.gradle.internal.execution.steps.AbstractCaptureStateBeforeExecutionStep.execute(AbstractCaptureStateBeforeExecutionStep.java:64)
    at org.gradle.internal.execution.steps.AbstractCaptureStateBeforeExecutionStep.execute(AbstractCaptureStateBeforeExecutionStep.java:43)
    at org.gradle.internal.execution.steps.AbstractSkipEmptyWorkStep.executeWithNonEmptySources(AbstractSkipEmptyWorkStep.java:125)
    at org.gradle.internal.execution.steps.AbstractSkipEmptyWorkStep.execute(AbstractSkipEmptyWorkStep.java:56)
    at org.gradle.internal.execution.steps.AbstractSkipEmptyWorkStep.execute(AbstractSkipEmptyWorkStep.java:36)
    at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsStartedStep.execute(MarkSnapshottingInputsStartedStep.java:38)
    at org.gradle.internal.execution.steps.LoadPreviousExecutionStateStep.execute(LoadPreviousExecutionStateStep.java:36)
    at org.gradle.internal.execution.steps.LoadPreviousExecutionStateStep.execute(LoadPreviousExecutionStateStep.java:23)
    at org.gradle.internal.execution.steps.HandleStaleOutputsStep.execute(HandleStaleOutputsStep.java:75)
    at org.gradle.internal.execution.steps.HandleStaleOutputsStep.execute(HandleStaleOutputsStep.java:41)
    at org.gradle.internal.execution.steps.AssignMutableWorkspaceStep.lambda$execute$0(AssignMutableWorkspaceStep.java:35)
    at org.gradle.api.internal.tasks.execution.TaskExecution$4.withWorkspace(TaskExecution.java:289)
    at org.gradle.internal.execution.steps.AssignMutableWorkspaceStep.execute(AssignMutableWorkspaceStep.java:31)
    at org.gradle.internal.execution.steps.AssignMutableWorkspaceStep.execute(AssignMutableWorkspaceStep.java:22)
    at org.gradle.internal.execution.steps.ChoosePipelineStep.execute(ChoosePipelineStep.java:40)
    at org.gradle.internal.execution.steps.ChoosePipelineStep.execute(ChoosePipelineStep.java:23)
    at org.gradle.internal.execution.steps.ExecuteWorkBuildOperationFiringStep.lambda$execute$2(ExecuteWorkBuildOperationFiringStep.java:67)
    at java.base/java.util.Optional.orElseGet(Unknown Source)
    at org.gradle.internal.execution.steps.ExecuteWorkBuildOperationFiringStep.execute(ExecuteWorkBuildOperationFiringStep.java:67)
    at org.gradle.internal.execution.steps.ExecuteWorkBuildOperationFiringStep.execute(ExecuteWorkBuildOperationFiringStep.java:39)
    at org.gradle.internal.execution.steps.IdentityCacheStep.execute(IdentityCacheStep.java:46)
    at org.gradle.internal.execution.steps.IdentityCacheStep.execute(IdentityCacheStep.java:34)
    at org.gradle.internal.execution.steps.IdentifyStep.execute(IdentifyStep.java:48)
    at org.gradle.internal.execution.steps.IdentifyStep.execute(IdentifyStep.java:35)
    at org.gradle.internal.execution.impl.DefaultExecutionEngine$1.execute(DefaultExecutionEngine.java:61)
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeIfValid(ExecuteActionsTaskExecuter.java:127)
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:116)
    at org.gradle.api.internal.tasks.execution.FinalizePropertiesTaskExecuter.execute(FinalizePropertiesTaskExecuter.java:46)
    at org.gradle.api.internal.tasks.execution.ResolveTaskExecutionModeExecuter.execute(ResolveTaskExecutionModeExecuter.java:51)
    at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:57)
    at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:74)
    at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:36)
    at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.executeTask(EventFiringTaskExecuter.java:77)
    at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:55)
    at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:52)
    at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:200)
    at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:195)
    at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:66)
    at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:59)
    at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:157)
    at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:59)
    at org.gradle.internal.operations.DefaultBuildOperationRunner.call(DefaultBuildOperationRunner.java:53)
    at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:73)
    at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter.execute(EventFiringTaskExecuter.java:52)
    at org.gradle.execution.plan.LocalTaskNodeExecutor.execute(LocalTaskNodeExecutor.java:42)
    at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:331)
    at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:318)
    at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.lambda$execute$0(DefaultTaskExecutionGraph.java:314)
    at org.gradle.internal.operations.CurrentBuildOperationRef.with(CurrentBuildOperationRef.java:80)
    at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:314)
    at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:303)
    at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.execute(DefaultPlanExecutor.java:463)
    at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.run(DefaultPlanExecutor.java:380)
    at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)
    at org.gradle.internal.concurrent.AbstractManagedExecutor$1.run(AbstractManagedExecutor.java:47)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.base/java.lang.Thread.run(Unknown Source)
Caused by: com.android.ide.common.process.ProcessException: Error while executing process /Users/transformhub/Library/Android/sdk/cmake/3.22.1/bin/cmake with arguments {-H/Users/transformhub/Downloads/mycam/ffmpeg/MyAndroidapp/app/src/main/cpp -DCMAKE_SYSTEM_NAME=Android -DCMAKE_EXPORT_COMPILE_COMMANDS=ON -DCMAKE_SYSTEM_VERSION=24 -DANDROID_PLATFORM=android-24 -DANDROID_ABI=arm64-v8a -DCMAKE_ANDROID_ARCH_ABI=arm64-v8a -DANDROID_NDK=/Users/transformhub/Library/Android/sdk/ndk/26.1.10909125 -DCMAKE_ANDROID_NDK=/Users/transformhub/Library/Android/sdk/ndk/26.1.10909125 -DCMAKE_TOOLCHAIN_FILE=/Users/transformhub/Library/Android/sdk/ndk/26.1.10909125/build/cmake/android.toolchain.cmake -DCMAKE_MAKE_PROGRAM=/Users/transformhub/Library/Android/sdk/cmake/3.22.1/bin/ninja -DCMAKE_LIBRARY_OUTPUT_DIRECTORY=/Users/transformhub/Downloads/mycam/ffmpeg/MyAndroidapp/app/build/intermediates/cxx/Debug/406wr1e2/obj/arm64-v8a -DCMAKE_RUNTIME_OUTPUT_DIRECTORY=/Users/transformhub/Downloads/mycam/ffmpeg/MyAndroidapp/app/build/intermediates/cxx/Debug/406wr1e2/obj/arm64-v8a -DCMAKE_BUILD_TYPE=Debug -B/Users/transformhub/Downloads/mycam/ffmpeg/MyAndroidapp/app/.cxx/Debug/406wr1e2/arm64-v8a -GNinja}
    at com.android.build.gradle.internal.process.GradleProcessResult.buildProcessException(GradleProcessResult.java:73)
    at com.android.build.gradle.internal.process.GradleProcessResult.assertNormalExitValue(GradleProcessResult.java:48)
    at com.android.build.gradle.internal.cxx.process.ExecuteProcessKt.execute(ExecuteProcess.kt:277)
    ... 143 more
Caused by: org.gradle.process.internal.ExecException: Process 'command '/Users/transformhub/Library/Android/sdk/cmake/3.22.1/bin/cmake'' finished with non-zero exit value 1
    at org.gradle.process.internal.DefaultExecHandle$ExecResultImpl.assertNormalExitValue(DefaultExecHandle.java:442)
    at com.android.build.gradle.internal.process.GradleProcessResult.assertNormalExitValue(GradleProcessResult.java:46)
    ... 144 more


  


  Here is the complete source code

  


• I have a ffmpeg command to concatenate 300+ videos of different formats. What is the proper syntax for the concat complex filter ?

  25 avril 2022, par jokoon

  I plan to concatenate a large amount of video files of different formats and resolution, some without sound, and add a short black screen "pause" of about 0.5s between each.

  


  I wrote a python script to generate such command.

  


  I created a 0.5s video file using ffmpeg.exe -t 0.5 -f lavfi -i color=c=black:s=640x480 -c:v libx264 -tune stillimage -pix_fmt yuv420p blank500ms.mp4.

  


  I then added a silent audio to it with -f lavfi -i anullsrc -c:v copy -c:a aac -shortest

  


  I now have the problem of adding a blank audio track for streams without one, but I don't want to generate new file, I want to add it to my complex filter.

  


  This is my complex script and generate command.

  


  The command (there are line returns, because I send this with the python subprocess module)

  


  ffmpeg.exe
-i
input0.mp4
-i
input1.mp4
-i
input2.mp4
-i
input3.mp4
-i
input4.mp4
-i
input5.mp4
-i
input6.mp4
-i
input7.mp4
-i
input8.mp4
-i
input9.mp4
-i
input10.mp4
-f
lavfi
-i
anullsrc
-filter_complex_script
C:/filter_complex_script.txt
-map
"[final_video]"
-map
"[final_audio]"
output.mp4


  


  The complex_filter_script :

  


  [0]fps=24[fps0];
[fps0]scale=480:270:force_original_aspect_ratio=decrease,pad=480:270:(ow-iw)/2:(oh-ih)/2,setsar=1,setpts=PTS-STARTPTS[rescaled0];
[1]fps=24[fps1];
[fps1]scale=480:270:force_original_aspect_ratio=decrease,pad=480:270:(ow-iw)/2:(oh-ih)/2,setsar=1,setpts=PTS-STARTPTS[rescaled1];
[2]fps=24[fps2];
[fps2]scale=480:270:force_original_aspect_ratio=decrease,pad=480:270:(ow-iw)/2:(oh-ih)/2,setsar=1,setpts=PTS-STARTPTS[rescaled2];
[3]fps=24[fps3];
[fps3]scale=480:270:force_original_aspect_ratio=decrease,pad=480:270:(ow-iw)/2:(oh-ih)/2,setsar=1,setpts=PTS-STARTPTS[rescaled3];
[4]fps=24[fps4];
[fps4]scale=480:270:force_original_aspect_ratio=decrease,pad=480:270:(ow-iw)/2:(oh-ih)/2,setsar=1,setpts=PTS-STARTPTS[rescaled4];
[5]fps=24[fps5];
[fps5]scale=480:270:force_original_aspect_ratio=decrease,pad=480:270:(ow-iw)/2:(oh-ih)/2,setsar=1,setpts=PTS-STARTPTS[rescaled5];
[6]fps=24[fps6];
[fps6]scale=480:270:force_original_aspect_ratio=decrease,pad=480:270:(ow-iw)/2:(oh-ih)/2,setsar=1,setpts=PTS-STARTPTS[rescaled6];
[7]fps=24[fps7];
[fps7]scale=480:270:force_original_aspect_ratio=decrease,pad=480:270:(ow-iw)/2:(oh-ih)/2,setsar=1,setpts=PTS-STARTPTS[rescaled7];
[8]fps=24[fps8];
[fps8]scale=480:270:force_original_aspect_ratio=decrease,pad=480:270:(ow-iw)/2:(oh-ih)/2,setsar=1,setpts=PTS-STARTPTS[rescaled8];
[9]fps=24[fps9];
[fps9]scale=480:270:force_original_aspect_ratio=decrease,pad=480:270:(ow-iw)/2:(oh-ih)/2,setsar=1,setpts=PTS-STARTPTS[rescaled9];
[10]fps=24[fps10];
[fps10]scale=480:270:force_original_aspect_ratio=decrease,pad=480:270:(ow-iw)/2:(oh-ih)/2,setsar=1,setpts=PTS-STARTPTS[rescaled10];
[10]split=10[blank0][blank1][blank2][blank3][blank4][blank5][blank6][blank7][blank8][blank9];
[rescaled0:v][0:a][blank0][rescaled1:v][1:a][blank1][rescaled2:v][2:a][blank2][rescaled3:v][3:a][blank3][rescaled4:v][4:a][blank4][rescaled5:v][5:a][blank5][rescaled6:v][11:a][blank6][rescaled7:v][11:a][blank7][rescaled8:v][11:a][blank8][rescaled9:v][11:a][blank9]concat=n=22:v=1:a=1[final_video][final_audio]


  


  As you can see, some video use [11:a], because it's a silent audio stream.

  


  input10.mp4, mapped to [10] and then split (or "cloned") into blanked0 to 9, is a short pause separator.

  


  ffmpeg tells me the error

  


  [Parsed_split_55 @ 000001591c33b280] Media type mismatch between the 'Parsed_split_55' filter output pad 1 (video) and the 'Parsed_concat_56' filter input pad 5 (audio)
[AVFilterGraph @ 000001591bf1e6c0] Cannot create the link split:1 -> concat:5
Error initializing complex filters.
Invalid argument


  


  I'm a bit lost when it comes to using the [X:Y:Z] syntax, and how the order matter in the concat argument list.

  


  I'm open to any other suggestion to solve my problem. I would rather do this in a single command, without intermediate file.

  


  EDIT :

  


  For details, I already wrote a large concat+xstack filter that worked well with 8GB of memory.

  


  In this case, there are a lot of inputs, but those inputs are small, most of them are between 1 and 10MB, so it would probably not generate out-of-memory problems, although I'm not certain.

  


• How to stack several videos using ffmpeg ?

  13 juillet 2019, par John

  I have four cameras that are recording videos and wand to stack all videos into one video file. The final video must be a 2x2 grid.

  

  THE HARD PART is that sometimes cameras are not recording simultaneously.

  Here you can see one situation of how cameras are recording :

  Camera 1 timeline: |recording....................................|
  
  Camera 2 timeline: |stopped....|recording........................|
  
  Camera 3 timeline: |recording.........|stopped....|recording.....|
  
  Camera 4 timeline: |recording..................|stopped..........|

  Explanation :

  • Camera 1 is recording all time.
  • Camera 2 is starting recording later.
  • Camera 3 is recording, then stopped a period of time, then again recording.
  • Camera 4 is recording a period of time, then stopped.

  In the final video I want to synchronize each video by timestamps.

  If a camera is stopped a period of time then at its position must be a black portion.

  How can I do this ?