I read that it makes videos rendered in av1 small files and with better quality than avc and hevc.
I tested this and this is how I proceeded :
First, I import an original avc video
I render it back with the default settings of Vegas Pro to the format av1 and to the format acv.
I reimport theses video-files and re-render both video-files to an image-sequences in png.
I now enlarge both images and I compare.
I personally like the images made in avc better than in av1.
Am I wrong or did I not understand ?