initial_uri

I thought I would knock up a video preview prog using the jMediaView from @TILogistic....... Unfortunately I seem to be doing something dumb. The example works fine using his URL but when I construct a URI for a local file I consistantly get the error: The URL works but the URI does not...

I want the system filepicker to start in a previously saved folder. Upon searching the web I found this, which requires api26+ intent.putExtra(DocumentsContract.EXTRA_INITIAL_URI, your_initial_uri); I've already tried a lot of variations for the first parameter bu still no luck. Help please.