Changing setting from Telenet RC interface

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Hi,

I'm buidling a little app for making snapshot of vids of any type (WMV, MPEG, etc.). For that, i've made a little Java wrapper which control a VLC instance through the Telnet RC interface.

I'm able to go to a specific position, then to take a snapshot but i don't know how to change the snapshot path. Is there any way to do this through Telnet, or i should do it when i launch VLC for the first time with its arguments?

Many thanks for an answer!