ChangeFrameSize

The following example code shows how to double the width of the destination frame.

public:
    ShowPixelValues(PClip _child, IScriptEnvironment* env) :
    GenericVideoFilter(_child)
    {
    // constructor code

        vi.width = vi.width*2; // width is doubled here
        vi.height = vi.height * 2;  // height is also
        multiplied by 2
    }
    PVideoFrame __stdcall GetFrame(int n, IScriptEnvironment* env);
};

PVideoFrame __stdcall ShowPixelValues::GetFrame(int n, IScriptEnvironment* env)
{
    PVideoFrame src = child->GetFrame(n, env);
    PVideoFrame dst = env->NewVideoFrame(vi); // new frame is double the size of src
...

A Similar approach has to be used for changing colorspace, framerate etc. There is a bit more information at WorkingWithImages.

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Back to AviSynth FilterSDK

Date: 2014/10/27 22:04:54 $