I have the following code:
<video width="640" height="360" controls id="video-player" poster="/movies/poster.png">
<source src="/movies/640x360.m4v" type='video/mp4; codecs="avc1.42E01E, mp4a.40.2"'>
<source src="/movies/640x360.ogv" type='video/ogg; codecs="theora, vorbis"'>
</video>
- I'm using Rails (Mongrel in development and Mongrel+Apache in production).
- Chrome (Mac and Win) can play either file (tested by one then the other source tags) whether locally or from my production servers.
- Safari (Mac and Win) can play the mp4 file fine locally but not from production.
- Firefox 3.6 won't play the video in either OS. I just get a grey cross in the middle of the video player area.
- I've made sure that both Mongrel and Apache in each case have the right MIME types set.
- From Chrome's results I know there is nothing inherently wrong with my video files or the way the files are being asked for or delivered.
For Firefox I looked at https://developer.mozilla.org/En/Using_audio_and_video_in_Firefox where it refers to an 'error' event and an 'error' attribute. It seems the 'error' event is thrown pretty well straightaway and at that time there is no error attribute. Does anyone know how to diagnose the problem?
The HTTP Content-Type for .ogg should be application/ogg (video/ogg for .ogv) and for .mp4 it should be video/mp4. You can check using the Web Sniffer.
Add these lines in your .htaccess file and it will work for all browsers. Works for me.
AddType video/ogg .ogv
AddType video/mp4 .mp4
AddType video/webm .webm
If you dun have .htaccess file in your site then create new one :) its obvious i guess.
Incidentally, .ogv files are video, so "video/ogg", .ogg files are Vorbis audio, so "audio/ogg" and .oga files are general Ogg audio, so also "audio/ogg". Checked in Firefox and work. "application/ogg" is deprecated for all audio or video uses. See http://www.rfc-editor.org/rfc/rfc5334.txt
I see in the documentation page an example like this:
<source src="foo.ogg" type="video/ogg; codecs="dirac, speex"">
Maybe you should enclose the codec information with " entities instead of actual quotes and the type attribute with quotes instead of apostrophes.
You can also try removing the codec info altogether.
Just remove the inner quotes - they confuse Firefox. You can just use "video/ogg; codecs=theora,vorbis".
Also, that markup works in my Minefiled 3.7a5pre, so if your ogv file doesn't play, it may be a bogus file. How did you create it? You might want to register a bug with Firefox.
Just need to change one letter:), rename 640x360.ogv to 640x360.ogg, it will work for all the 3 browers.
来源：https://stackoverflow.com/questions/2643447/html5-video-mp4-and-ogv-problems-in-safari-and-firefox-but-chrome-is-all-goo