The latest html is completely messed up. You had it right at first. And it is working correctly, it is failing over to download, because it is not an iOS device and the file sintel.mp4 is not found. The stream failed. I have tested this. Go back to the way you had the html in the very first post, that was correct.
The only problem is that sintel.mp4 does not exist in /conf/vod/Application.xml /StorageDir, which by default is [wowza-install-dir]/content. You will see a file named “sample.mp4” in that location, which plays from your server using the SimpleVideoStreaming example plyayer:
Server: rtmp://stream1.eyb.de:1935/vod
Stream: mp4:sample.mp4
Again, there is nothing wrong with the original html, the problem is the file is missing. You should test with Simple player first.
Richard