But in each case, make sure the finished edit is at the highest quality available and has been created from the original footage. The compression and image quality of these kinds of video materials can be very high. In the same way that a highly detailed original image will challenge a compression algorithm to produce the details so will a very noisy signal. Any compression scheme will be very busy processing the snow as if it were signal. This kind of signal is terrible and generates huge file sizes without improving the picture.
Experience is the key to successful creation of digital video.
Knowing how the signal degrades through the production process is very important. Knowing what happens to those wavelengths when converted to bytes is also extremely important. Understanding the trade-off between image quality and file size is crucial to managing digital content. You can get there from here. You just have to watch your step every inch of the way and work with every professional involved to preserve the image and maintain good signals until it's finally mastered or placed on the server.