No. The avformat-55.dll error is . Mac users see “FFmpeg missing” but no .dll errors. Mac users should install FFmpeg via Homebrew or the official Audacity FFmpeg package.
Users often encounter errors like "avformat-55.dll not found" when trying to open or export files that require FFmpeg. This typically happens if the library is: Not installed on the system. Installed but not "linked" within Audacity's settings.
Missing that file? Audacity silently disables half its import options. You get an error like: