All it means that this Chinese engineer must had failed his thermodynamics class. Because someone else took a different approach and with thermal pads between boards with a different path, was able to get the camera to record for a very long time. The big question then is, if you transfer heat to the case in a more efficient manner, how hot will the case get? It to may get to be too hot to handle. Not all thermo pads are created equal, some are more efficient, some not very good at all.