How to download the full Biden video in unmodified quality
Download the video directly using youtube-dl and the m3u8 playlist provided to the webplayer on the gtv webpage:
youtube-dl https://filegroup.gtv.org/group4/vm3u8/20201024/19/41/5f94837c7de25667c0fe0c5e/hls.m3u8
You'll get a 225 MB video file, with not just the Hunter Biden footage, but also some commentary from the Chinese leakers.
For archival purposes.
Some sample screenshots of the non-Biden stuff above.