Unknown encoder 'libx264'

ubuntu ffmpeg x264 avconv
why picture why · Mar 19, 2012 · Viewed 93.3k times · Source

I installed ffmpeg 0.8.9 on ubuntu11 by

./configure --enable-gpl --enable-nonfree --enable-pthreads --enable-libfaac --enable-libmp3lame --enable-libx264

When I run it

ffmpeg -y -i test.mp4 -f mpegts -acodec libmp3lame -ar 48000 -ab 64k -vcodec libx264 -b 250k -flags +loop -cmp +chroma -partitions +parti4x4+partp8x8+partb8x8 -subq 5 -trellis 1 -refs 1 -coder 0 -me_range 16 -keyint_min 25 -sc_threshold 40 -i_qfactor 0.71 -bt 250k -maxrate 250k -bufsize 250k -rc_eq 'blurCplx^(1-qComp)' -qcomp 0.6 -qmin 10 -qmax 51 -qdiff 4 -level 30 -aspect 320:240 -g 30 -async 2 a.ts

It said

Unknown encoder 'libx264'

(Note: the same error could occour with avconv)

How can I fix this? Thanks!

Answer

Sathish picture Sathish · Apr 5, 2012

I am using Ubuntu 11.04, and I also came across this error - Unknown encoder 'libx264'. Installing the package libavcodec-extra-53 resolved the problem.

In Ubuntu 14.04 LTS the package that is needed is called libavcodec-extra-54 (and libav-tools)

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