HTML 5 video (ogv) and MIME types

问题

I can't figure out the following problem:

I use HTML 5 video on my web site. For crossbrowser support, I keep video in "mov" and "ogv" formats, so that Firefox can play it.

In ./config/initializers/mime_types.rb I have the following code:

Rack::Mime::MIME_TYPES.merge!({
  ".ogg"     => "application/ogg",
  ".ogx"     => "application/ogg",
  ".ogv"     => "video/ogg",
  ".oga"     => "audio/ogg",
  ".mp4"     => "video/mp4",
  ".m4v"     => "video/mp4",
  ".mp3"     => "audio/mpeg",
  ".m4a"     => "audio/mpeg"
})

It works on my local machine, but won't on a production server.

I've tried many ways to make this work:

Rails: MIME type issues with .m4v files

Setting Mime Type for .ogv files in Rails Development Environment

Make OGG Video work with Rails

None of these helped me, and I'm completely stuck.

回答1:

On the production server or machine, if you are using a web server such as Nginx or Apache you need to declare those mime types within the respective config files for the server to rexognise it. Has this been done?

回答2:

I observed a strange behavior where some of the ogv files gave a application/ogg mime type rather than video/ogg. Please check the mime type of the file you are uploading very carefully.

来源：https://stackoverflow.com/questions/4204602/html-5-video-ogv-and-mime-types