MPEG2
VTKExamples/Cxx/Video/MPEG2
Description
You must set VTK_USE_MPEG2_ENCODER ON VTK_USE_OGGTHEORA_ENCODER ON in your VTK build.
CMake won't find MPEG2?
When compiling: cannot find -lvtkoggtheora
Code
MPEG2.cxx
#include <vtkSmartPointer.h>
#include <vtkImageCanvasSource2D.h>
#include <vtkMPEG2Writer.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<vtkMPEG2Writer> writer =
vtkSmartPointer<vtkMPEG2Writer>::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(MPEG2)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(MPEG2 MACOSX_BUNDLE MPEG2.cxx)
target_link_libraries(MPEG2 ${VTK_LIBRARIES})
Download and Build MPEG2
Click here to download MPEG2 and its CMakeLists.txt file. Once the tarball MPEG2.tar has been downloaded and extracted,
cd MPEG2/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:
./MPEG2
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.