I am having the same issue with it not loading. I have tried to set the file name in various manors and even using the mp4:filename.mp4 I have tried about 10 variations of the url. I know I have to be missing something. I was told that my file has to be delivered like so.
OK, I see it right away. There's a line in your embed code:
'file': 'rtmp://fms.51A6.gravlab.net/0051A6/pcs-vids/VTS_01_0.mp4',
that needs to be split into 2 lines, with 2 variables, like this:
'file': 'pcs-vids/VTS_01_0.mp4',
'streamer': 'rtmp://fms.51A6.gravlab.net/0051A6/'
Are you using a 3rd party app to embed the videos? Does it allow you to add a 'streamer': line to it for true flash streaming?
No matter what I set it to the url is always single and doesn't split.