FFMPEG
VTKExamples/Cxx/Video/FFMPEG
Description¶
You must set VTK_USE_FFMPEG_ENCODER ON in your VTK build.
CMake won't find FFMPEG headers?
Code¶
FFMPEG.cxx
#include <vtkSmartPointer.h> #include <vtkImageCanvasSource2D.h> #include <vtkFFMPEGWriter.h> int main (int argc, char *argv[]) { vtkSmartPointer<vtkImageCanvasSource2D> source = vtkSmartPointer<vtkImageCanvasSource2D>::New(); source->SetScalarTypeToUnsignedChar(); source->SetNumberOfScalarComponents(3); source->SetExtent(0, 100, 0, 100, 0, 0); vtkSmartPointer<vtkFFMPEGWriter> writer = vtkSmartPointer<vtkFFMPEGWriter>::New(); writer->SetInputConnection(source->GetOutputPort()); writer->SetFileName("test.avi"); writer->Start(); for(unsigned int i = 0; i < 100; i++) { source->SetDrawColor(0,0,0,1); //black source->FillBox(0, 100, 0, 100); //clear image source->SetDrawColor(255,0,0,1); //red source->FillBox(i, 20, 10, 20); source->Update(); writer->Write(); } writer->End(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(FFMPEG) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(FFMPEG MACOSX_BUNDLE FFMPEG.cxx) target_link_libraries(FFMPEG ${VTK_LIBRARIES})
Download and Build FFMPEG¶
Danger
The generation of tar files has not been ported to the new VTKExamples. Some tarballs may be missing or out-of-date.
Click here to download FFMPEG and its CMakeLists.txt file. Once the tarball FFMPEG.tar has been downloaded and extracted,
cd FFMPEG/build
If VTK is installed:
cmake ..
If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:
cmake -DVTK_DIR:PATH=/home/me/vtk_build ..
Build the project:
make
and run it:
./FFMPEG
WINDOWS USERS PLEASE NOTE: Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.