Solvusoft - "YouTube MP4 Downloader" by ytmp4 is a reliable Mozilla Firefox Addon for downloading YouTube videos. | Facebook
MP4 video not playing in Firefox but works in IE/Chrome - Support - Themeco Forum
Firefox H.264 | HTML5 Video Player
Certain MP4 Videos Breaking - Showing No Codec Error, or Black Screen (Has Screenshots) : r/firefox
I cannot download MP4 video from YouTube in FireFox browser
Firefox 110 won't play embedded .mp4 video using the <video> element : r/ firefox
Easy Youtube Video Downloader Express – Get this Extension for 🦊 Firefox (en-US)
Simple YouTube to MP3/MP4 Converter and Downloader – Get this Extension for 🦊 Firefox (en-US)
How to prevent Firefox from playing directly linked MP4 files in the browser – /jdrch
How to use the Download Flash and Video add-on for Firefox | CyberText Newsletter
html - Why won't MP4 video work with HTML5 <video> tag on Firefox - Stack Overflow
The State of HTML5: Firefox Now Supports MP4! - JW Player
Firefox won't play MP4 files from the server - Ask Ubuntu
Video DownloadHelper – Get this Extension for 🦊 Firefox (en-US)
html - Why won't MP4 video work with HTML5 <video> tag on Firefox - Stack Overflow
Does Firefox not support mp4 video on websites? | Firefox Support Forum | Mozilla Support
Previewing mp4 files instead of saving them to PC. | Firefox Support Forum | Mozilla Support
How to prevent Firefox from playing directly linked MP4 files in the browser – /jdrch
Firefox 35.0 launches with new Hello video chat and MP4 playback on Mac - Gear | siliconrepublic.com - Ireland's Technology News Service
How To Convert .mp4 To .webm HTML5 Using Firefox Plugin Firefogg - YouTube
html - Why won't MP4 video work with HTML5 <video> tag on Firefox - Stack Overflow
Previewing mp4 files instead of saving them to PC. | Firefox Support Forum | Mozilla Support
I cannot download MP4 video from YouTube in FireFox browser
Using the HTML5 video player for serving .ogv files in Firefox and Safari, and .mp4 files in Internet Explorer
Tell firefox to use Flash player instead of download for mp4 files - Super User
