I really like the app dubsmash (if you haven't tried it yet, check it out here).
However, the app inserts a rather annoying and big watermark in the processed video. This Xposed module is there to remove the watermark.
Install it like any other Xposed module and activate it. Once it's activated (and you rebooted), the watermark should be removed in newly created videos. There is no UI for the module.
Note that the module is still in beta stage. I have tested it on my Z1C though and it worked perfectly.
So try it out and post your feedback down below! You can also download it via Xposed directly.