Overall, the M1s could perform better than the i7 in terms of video editing.
Apps coded for Intel hardware sometimes run better on new M1-powered Macs than on their predecessors.
Retrieved February 26, 2021.
Apple said the CPU performance is about 70% faster than the M1, and that its GPU performance is about double.
What Makes the Apple M1 Chip So Fast? Prerelease Final Cut Pro 10.
This allows the processes to exchange an arbitrary amount of data, bound only by CPU overhead.