You will need to type commands with your keyboard to transcode multimedia files and streams. It packs many encoders and decoders, making it powerful enough to support almost all common and uncommon multimedia formats.įFmpeg comes with a learning curve especially if you are new to a command line tool. It should be possible to do.ĭo you know of a non-libx264 command line method? Or are you familiar with ffmpeg.js?Įxcuse that, I am just a browser extension developer making a screencast addon that converts to mp4 and gives to user to upload to twitter.FFmpeg is a free and open-source command line-based tool to handle video, audio, and other multimedia files. Processing Additional Codecs This isn't yet compiled with support for additional codecs Stream #0:0(eng): Video: vp8, yuv420p, 1920x1200, SAR 1:1 DAR 8:5, 30 fps, 30 tbr, 1k tbn, 1k tbc (default)Īh shoot I use ffmpeg.js which has x264 here - videoconverter.js/build at master īut I don’t think it was compiled with it per here he says - videoconverter.js - Convert Videos In Your Web Browser Input #0, matroska,webm, from 'input.webm':ĭuration: N/A, start: 0.000000, bitrate: N/A

Warning: not compiled with thread support, using thread emulation Oh shoot I am getting Unknown encoder 'libx264' here is my output: ffmpeg version 2.2.1 Copyright (c) 2000-2014 the FFmpeg developersīuilt on 20:01:41 with emcc (Emscripten GCC-like replacement) 1.12.0 (commit 6960d2296299e96d43e694806f5d35799ef8d39c)Ĭonfiguration: -cc=emcc -prefix=/Users/bgrinstead/Sites/videoconverter.js/build/ffmpeg/./dist -enable-cross-compile -target-os=none -arch=x86_32 -cpu=generic -disable-ffplay -disable-ffprobe -disable-ffserver -disable-asm -disable-doc -disable-devices -disable-pthreads -disable-w32threads -disable-network -disable-hwaccels -disable-parsers -disable-bsfs -disable-debug -disable-protocols -disable-indevs -disable-outdevs -enable-protocol=file

Ffmpeg gif bitrate