Fast Forward and Rewind of Transcoded?

I noticed that all or any DLNA server applications can not actually give you the ability to FAST FORWARD or the REWING. It would be fine even if there was a way to get a JUMP FORWARD or a JUMP BACKWARD to work. But do not have that.

Any idea of a way to get this with transcoded files on the fly?

[zip]

It should be working, depends also on your device.