It works similar to flv streaming module and offset must be passed by the same start variable but its not the same offset as flv seek offset as
i think its timeoffset in seconds while flv seeking uses byteoffset
It seems be easy to be implemented in next minor release and hope it to be
If someone can contribute a BSD licensed library which can seek H264 encoded movie file based on time (in seconds), it will accelerate the addition of this feature.
The code should be based on the spec of the video file, should not be similar to the code used for lighttpd, nginx or Apache from code-shop.com. And we will pay for this project.