Default settings can be specified for most distributing options. If the link does not explicitly specify any parameter, then its default value is checked in the following order::
Example1. If the link does not explicitly set the upload speed http://cdn.domain.com/key=123456/buffer=123456/path/to/file.mp4, 130% of the bitrate is specified in the domain settings, 120% of the bitrate in the account settings, then the CDN will distribute the video at a speed of 130% of the bitrate.
Example2. If the link specifies a buffer for sharing without restriction http://cdn.domain.com/key=123456/buffer=5.0/path/to/file.mp4, and in the account settings the buffer is specified in 7.0 seconds, the video will be sent from buffer equal to 5.0.