[mpv] Change unique mpv to floating instance

Changed the way umpv starts up to always be a floating instance in the
lower left screen corner.

mpv/.local/bin/umpv

@@ -90,7 +90,14 @@ else:
     os.mkfifo(FIFO, 0o600)
 
     opts = (os.getenv("MPV") or "mpv").split()
-    opts.extend(["--no-terminal", "--force-window=immediate", "--input-file=" + FIFO,
+    opts.extend(["--no-terminal",
+                 "--on-all-workspaces",
+                 # position on lower left screen corner
+                 # contains funky fix for slight resizings depending on video
+                 # move it 10px more left than it wants; 5px more up
+                 "--geometry=15%+-10-+5",
+                 "--force-window=immediate",
+                 "--input-file=" + FIFO,
                  "--"])
     opts.extend(files)