FAQ - Frequently asked questions of using uDownloader to download video
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Why some of HTTP or RTMP streams cannot be captured by uDownloader?

First of all, make sure that Microsoft .net Framework 4.0 is installed on your PC. You can download Microsoft .net Framework 4.0 at here.

What is Microsoft .net Framework 4.0?

Then refresh the webpage with video or audio again to check whether the stream url is captured or not on list “Unfinished”.

As for RTMP stream protocol, it has multiple variations:

1. RTMPS which is RTMP over an TLS/SSL connection.
2. RTMPE which is RTMP encrypted using Adobe's own security mechanism. While the details of the implementation are proprietary, the mechanism uses industry standard cryptography primitives. But the design of RTMPE is fundamentally flawed and provides no actual security in itself.
3. RTMPT which is encapsulated within HTTP requests to traverse firewalls. RTMPT is frequently found utilizing cleartext requests on TCP ports 80 and 443 to bypass most corporate traffic filtering. The encapsulated session may carry plain RTMP, RTMPS, or RTMPE packets within.

And currently uDownloader can only be access to RTMP streams without Encryption-protection.
If uDownloader still can not sniff URL streams, please fell free to contact us. We will offer you a most complete solution.


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