private void deleteMedia() {
   if (uriFragmentToMedia == null) {
     return;
   }
   // get the file path and delete the file
   File f = ODKFileUtils.getRowpathFile(appName, tableId, instanceId, uriFragmentToMedia);
   String path = f.getAbsolutePath();
   // delete from media provider
   int del = MediaUtils.deleteVideoFileFromMediaProvider(this, appName, path);
   WebLogger.getLogger(appName).i(t, "Deleted " + del + " rows from video media content provider");
 }