Does anyone know how to fix the last part of this code?

while (true)
{
var frame = videoReader.ReadVideoFrame();
if (frame == null)
break;

for (int i = 0; i < interpolationFactor; i++)
videoWriter.WriteVideoFrame(frame);

frame.Dispose();
}

there are 2 errors in video.Reader.ReadVideoFrame(); and videoWriter.WriteVideoFrame(frame);

Does anyone know how to fix it?
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