allow setDestination to Cache directory

[angelkoh]

sometimes i only want the edit to be in my cache,. anyway to allow for it ?

[a914-gowtham]

@angelkoh currently, trimmed video file is stored in app's external storage. which is works same as cache, it will be cleared if the device need memory.

you want to store it somewhere in the storage?

[angelkoh]

the plan is only for the trimmed video to be available for internal consumption. it'll still work for external storage too, but will be nice if there is an option for the coder to choose.