video tag not working in safari

I am trying to play a video in safari 5 but its just showing me a blue question mark button, no video plac开发者_运维知识库e holder no video controls (like in chrome)

<video poster='your_pic.jpg' controls="">
        <source width='480' height='360' src='/videos/my file to play.m4v'  />
    </video>

For safari to play videos on windows you have to install apple quick time.

http://www.agilepman.com/2010/09/how-to-make-html5-video-tag-work-in-safari-on-windows/

I'm not familiar with the syntax you have used, i.e. a source tag within the video tag. I would expect a video reference to look more like this:

<video controls="true" poster="some-image.png" src="some-video.mp4"></video>

Does the video work as expected in Chrome? Looking at the controls that do get rendered, the difference between Chrome and Safari seems to be down to embedded Quicktime (i.e. Safari uses it if it can, Chrome does not).

One other thing: if the file just doesn't play anywhere, bear in mind that .m4v files are often MPEG4 files with Apple's Fairplay DRM applied to them (although they don't have to be).