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Home/ Questions/Q 8914275
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Editorial Team
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Editorial Team
Asked: June 15, 20262026-06-15T04:40:36+00:00 2026-06-15T04:40:36+00:00

when i run ffmpeg -y -i test.mov -threads 8 -f webm -aspect 16:9 -vcodec

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when i run

ffmpeg -y -i test.mov -threads 8 -f webm -aspect 16:9 -vcodec libvpx -deinterlace -g 120 -level 216 -profile 0 -qmax 42 -qmin 10 -rc_buf_aggressivity 0.95 -vb 2M -acodec libvorbis -aq 90 -ac 2 OUTPUT_FILE.webm

it returns an error saying Unknown encoder 'libvpx'

I installed libvpx, libvorbis, libogg, and ffmpeg all via macports

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  1. Editorial Team
    Editorial Team
    2026-06-15T04:40:37+00:00Added an answer on June 15, 2026 at 4:40 am

    Your configuration of macports was not built with libvpx. Try uninstalling ffmpeg and using Homebrew to install the package instead of macports:

    brew install ffmpeg --with-libvpx
    
    or
    
    brew reinstall ffmpeg --with-libvpx
    

    Then your command should work.

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