Hmm, after fiddling with webp all day in Windows, I tried out libwebp 0.4.1... but alas, Debian was stuck with the GLIBC 2.13, with the later versions available only in experimental repos
CODE
# sudo nano /etc/apt/sources.list
deb http://ftp.debian.org/debian experimental main
deb http://ftp.debian.org/debian sid main
Only needs the libc6 instead of full upgrade to experimental packages.
CODE
# sudo apt-get update && sudo apt-get -t experimental install libc6-dev
Be sure to remove the experimental repos and run apt-get update afterwards (especially if you run something like unattended upgrades or otherwise auto-updates your server)
QUOTE(Acecobe @ Sep 30 2014, 17:49)

What would the webums be of, movies, ovas?
Animated pictures, seeing that webm support would be vid only.