Hi again,
your issue is simple: JD doesn't recognize these URLs because it doesn't "know" the file extension.
But there is an easy workaround:
Settings --> Advanced Settings --> Search for "link crawler rule" --> Put the following Text inside the "Value" field of the 2nd search result:
Code:
[{
"name" : "example add support for file extension f4v",
"enabled" : true,
"pattern" : "(?i)https?://.+\\.f4v.*",
"rule" : "DIRECTHTTP"
}]
Rule on pastebin to get around our forum http censoring:
pastebin.com/Tf71qjmJ
-psp-
EDIT
I would not exactly see this as a bug but I've created a ticket regarding out-of-the-box support for extension "f4v":