Convert MP4 to WEBM on Mac OSX Sierra

Convert MP4 to WEBM on Mac OSX Sierra

UPDATE: Please visit the new post if you are running Mac OSX Mojave now. The following original post may not work anymore. https://www.ogprogrammer.com/2019/09/17/convert-mp4-to-webm-on-mac-osx-mojave/ Recently I’ve been making more HTML5 Video websites and to...