mpv can't play any videos, just eats up memory

[Jun Inoue]

I can't seem to play any videos with mpv. When I invoke it like `mpv /path/to/file', it pops up a window but then eats up a ton of memory without showing anything. Eventually, the system becomes clogged up and I have to kill it with kill -9. Running it under ulimit -v $((4*1024*1024)) causes it to get killed, so it's at least occupying 4G of memory just to play a 640x360 file. I'm seeing similar behavior with vlc on the same system, if that might provide a clue.

I've tried a few input files, the smallest being 640x360 m2v and asf files available here:
https://filesamples.com/categories/video

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: mpv 0.32.0-1ubuntu1
ProcVersionSignature: Ubuntu 5.4.0-53.59-generic 5.4.65
Uname: Linux 5.4.0-53-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.11-0ubuntu27.13
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: GNOME-Flashback:GNOME
Date: Sun Dec 13 15:58:24 2020
InstallationDate: Installed on 2015-12-31 (1808 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
SourcePackage: mpv
UpgradeStatus: Upgraded to focal on 2020-06-15 (180 days ago)

[Jun Inoue (jun-lambda)]

Uhhh, actually the problem resolved itself after upgrading to 20.10.