I didn't encounter this issue when I used VLC on Windows/Manjaro.
On Manjaro, I recall that the OS installed several xf86-video drivers. Since my setup only has a discrete AMD GPU, I only installed xf86-video-amdgpu. I am not sure if the issue is related to the xf86 drivers. I just thought I'll mention it just in case.
On both Manjaro and Arch, I was using the 4.19 kernel. My video card (only discrete is present. The CPU has no built-in ones) is an AMD RX570.
I assume the issue is HW accelerated decoding itfp, do you still have the manjaro installation?
edited my original post. I burned manjaro deepin to a USB and see if I can replicate the issue on a live USB.
The interesting part is actually whether or not you're using HW accelerated decoding (and whether that differs on manjaro; vlc does not seem to find the radeonsi vdpau driver, so rather software decoding) but that particular video seems certainly corrupted.
Do you experience this w/ all videos? What about a YT download?