No, it is not just interpolating. The underlying algorithm uses machine learning by applying a trained deep neural network. So there is value added besides a mere upscale.
You're ultimately right, though, and that a true HD is only going to come from the raw film content. What the neural network gives us are essentially plausible higher-res hallucinations.
Edit: as per the other comment, if the original exists only on video and not film, perhaps this is the best we're going to get.
You're ultimately right, though, and that a true HD is only going to come from the raw film content. What the neural network gives us are essentially plausible higher-res hallucinations.
Edit: as per the other comment, if the original exists only on video and not film, perhaps this is the best we're going to get.