Title: Unknown encoder ‘libx264’ Last modified: April 22, 2020 --- # Unknown encoder ‘libx264’ * Resolved [videohelp](https://wordpress.org/support/users/videohelp/) * (@videohelp) * [6 years, 1 month ago](https://wordpress.org/support/topic/unknown-encoder-libx264/) * Getting this error when I run a test, cannot get anything to encode after playing with some settings: * ffmpeg version N-97439-g9025d5c5ce Copyright (c) 2000-2020 the FFmpeg developers built with gcc 8 (GCC) configuration: libavutil 56. 42.102 / 56. 42.102 libavcodec 58. 80.100 / 58. 80.100 libavformat 58. 42.101 / 58. 42.101 libavdevice 58. 9.103/ 58. 9.103 libavfilter 7. 79.100 / 7. 79.100 libswscale 5. 6.101 / 5. 6.101 libswresample 3. 6.100 / 3. 6.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from ‘/home/bwayvideo/ domains/video.4283.live/public_html/wp-content/plugins/video-embed-thumbnail- generator/images/sample-video-h264.mp4’: Metadata: major_brand : isom minor_version: 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf55.33.100 Duration: 00: 00:01.02, start: 0.000000, bitrate: 123 kb/s Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1920×1080 [SAR 1:1 DAR 16:9], 109 kb/ s, 23.98 fps, 23.98 tbr, 11988 tbn, 47.95 tbc (default) Metadata: handler_name: VideoHandler Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 2 kb/s (default) Metadata: handler_name : SoundHandler Unknown encoder ‘libx264’ * When running default options, I am getting this error: * ffmpeg version N-97439-g9025d5c5ce Copyright (c) 2000-2020 the FFmpeg developers built with gcc 8 (GCC) configuration: libavutil 56. 42.102 / 56. 42.102 libavcodec 58. 80.100 / 58. 80.100 libavformat 58. 42.101 / 58. 42.101 libavdevice 58. 9.103/ 58. 9.103 libavfilter 7. 79.100 / 7. 79.100 libswscale 5. 6.101 / 5. 6.101 libswresample 3. 6.100 / 3. 6.100 Unrecognized option ‘crf’. Error splitting the argument list: Option not found * Running on CentOS 8, ffmpeg is installed along w/ libx264 – am I missing anything? * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Funknown-encoder-libx264%2F%3Foutput_format%3Dmd&locale=en_US) to see the link]_ Viewing 2 replies - 1 through 2 (of 2 total) * Plugin Author [Kyle Gilman](https://wordpress.org/support/users/kylegilman/) * (@kylegilman) * [6 years, 1 month ago](https://wordpress.org/support/topic/unknown-encoder-libx264/#post-12715965) * You’ve compiled FFMPEG with no configuration flags. I can’t really help with compiling FFMPEG because it’s a nightmare, but you can start with this guide [https://trac.ffmpeg.org/wiki/CompilationGuide/Centos](https://trac.ffmpeg.org/wiki/CompilationGuide/Centos) * Thread Starter [videohelp](https://wordpress.org/support/users/videohelp/) * (@videohelp) * [6 years, 1 month ago](https://wordpress.org/support/topic/unknown-encoder-libx264/#post-12716108) * This response was actually super helpful, thanks! Got FFMPEG compiled correctly and videos are converting. Viewing 2 replies - 1 through 2 (of 2 total) The topic ‘Unknown encoder ‘libx264’’ is closed to new replies. * ![](https://ps.w.org/video-embed-thumbnail-generator/assets/icon.svg?rev=2965979) * [Videopack](https://wordpress.org/plugins/video-embed-thumbnail-generator/) * [Frequently Asked Questions](https://wordpress.org/plugins/video-embed-thumbnail-generator/#faq) * [Support Threads](https://wordpress.org/support/plugin/video-embed-thumbnail-generator/) * [Active Topics](https://wordpress.org/support/plugin/video-embed-thumbnail-generator/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/video-embed-thumbnail-generator/unresolved/) * [Reviews](https://wordpress.org/support/plugin/video-embed-thumbnail-generator/reviews/) * 2 replies * 2 participants * Last reply from: [videohelp](https://wordpress.org/support/users/videohelp/) * Last activity: [6 years, 1 month ago](https://wordpress.org/support/topic/unknown-encoder-libx264/#post-12716108) * Status: resolved