I have converted an mp4 video using Miro, into webmhd and webmsd.
None of them play in Firefox!!!
Note that I have not even uploaded it to the server where the website is.
I am just clicking on the file in my computer and it does not play.
The only way to play the video in Firefox is to go to https://urbanomp3.com/ and use their online tool to convert it to webm vp8.
How can I use Miro to convert the mp4 to webm vp8?