Play 1080p YouTube Video using HTML5 on Mozilla Firefox Linux

The latest Adobe Flash Player for is the version 11, compared with version 18 in other OS. Adobe decided to not give further update to Linux. Along with the increasing concern about Flash’s vunerability, currently with the recent update, there will be a warning for us to open the Adobe Flash Player in Linux. It closes so many ads in the websites, that is good, but in other side if you open YouTube we need to activate the plugin first to watch the movie.

Mozilla is on it’s way to create the replacement for Flash based on HTML5 (read: The Shumway Project) but it will took sometimes to be accepted generally among the web developer. Actually in YouTube we could activate the HTML5 player to replace the Flash Player by clicking https://www.youtube.com/html5 and choose “Request HTML5 Player” then it would change the player to HTML5 version.

But when we watch with the HTML5 player, the maximum resolution we could play is 720p. This is because from 6 options, Mozilla Firefox on Linux is not able to select:

  • Media Source Extensions (MSE)
  • MSE & H.264
  • MSE & WebM VP9

Those caused the video resolution is only until 720p.

To enable those options, based on the solution on “How to enable MSE and native HTML5 support in Firefox on Linux“, we shoud go to about:config page, then we will see warning screen as follows:

about:config

Choose “I’ll be careful, I promise!” and we will see the list. Activate and make sure these options set as “True”

  • media.encoder.webm.enabled
  • media.fragmented-mp4.enabled
  • media.fragmented-mp4.exposed
  • media.fragmented-mp4.ffmpeg.enabled
  • media.mediasource.enabled
  • media.mediasource.mp4.enabled
  • media.mediasource.webm.enabled

Make sure this option is set as “False”

  • media.fragmented-mp4.use-blank-decoder

Then you will see the options are all blue.

about:config

Enjoy the 1080p video on HTML5 player.


Anton Hermansyah

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