Is it possible to index to a particular point in a movie?

Hi. Is it possible for a movie (used as a guitexture) to be stopped and started at any point in the file? Looking at the documentation it looks like a MovieTexture can only be started from the beginning or stopped.

What I would like to achieve is similar to a standard movie player where you can drag a slider backward and forward to control the progress through the movie.

Does anyone have some pointers about how to tackle this?

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