Unable to play HTML 5 video on Firefox

1. Open .htaccess (or create one if it doesn’t exist)

2. Add the following lines to .htaccess

AddType video/ogg .ogv
AddType video/mp4 .mp4
AddType video/x-m4v .m4v

AddType video/ogg .ogv
AddType video/mp4 .mp4
AddType video/x-m4v .m