Check file exist

Author: c0re100

vidcutter/libs/videoservice.py

@@ -238,7 +238,7 @@ def cut(self, source: str, output: str, frametime: str, duration: str, allstream
         cut_arg = '-ss {0} -i "{1}" -t {2} -vf "fps=24,scale=iw*min(1\,min(640/iw\,360/ih)):-2" "{3}"'
         merged_arg = '{0} --fps 24 --output "{1}"'
 
-        if gifOutput:
+        if gifOutput and not os.path.exists(gif_dir):
             os.mkdir(png_dir)
             self.cmdExec(self.backend,
                          cut_arg.format(frametime, source, duration, png_dir + png_frame))