I will often stabilize a clip and then want to export it so I can do things like slow it down and speed up without it looking choppy. However I noticed when I go to
File > Share > Master File
Format Video Audo
Video Codec (Source - Apple ProRes 422)
The file will wind up being 150MB when the original clip of the same length is only 26MB
Audio is not comparable. Every time you recompress video there is some degradation in the image quality. The more times you do it the worse it gets. The more compression you use the worse it gets. H.264 compresses substantially more than ProRes. You can recompress PR multiple times and not see degradation. H.264 you’ll be able to see the difference in a couple of generations.