Fgoptionalunusedvideosbin Link File

fgoptionalunusedvideosbin is a generated target identifier used within the Mozilla Firefox build system (specifically related to the mach test or specific test harnesses). It represents a binary executable or library derived from the fgoptionalunusedvideos source set. Its primary purpose is to facilitate the compilation and linking of video decoding or media handling code that is conditionally compiled or used specifically for fuzzing (fg) or testing purposes.

Could indicate:

Component ID: fgoptionalunusedvideosbin Context: Mozilla Firefox Build System / Testing Infrastructure Category: Test Artifact / Binary Wrapper fgoptionalunusedvideosbin link

This safely removes video caches from apps and Windows itself.

ls -lh

To see what’s inside the target directory (if not deleted):

# Follow the symlink
cd $(readlink -f /home/deck/.local/share/lutris/runtime/steam/steamapps/shadercache/2357570/fgoptionalunusedvideosbin)

On a Steam Deck or Linux system with Lutris-managed Steam runtime: Example: ls -la /home/deck/

~/.local/share/lutris/runtime/steam/steamapps/shadercache/<APPID>/fgoptionalunusedvideosbin

Example:

ls -la /home/deck/.local/share/lutris/runtime/steam/steamapps/shadercache/2357570/
# Output:
# fgoptionalunusedvideosbin -> ../fg_optional_unused_videos

The target directory (../fg_optional_unused_videos) contains .bin or .cache fragments of video pipelines. The target directory (


If you saw this in a registry key, log file, or a tool’s output, it was likely:

Our advice: Never search for or download a tool claiming to remove “fgoptionalunusedvideosbin.” That’s a red flag for malware.