I backuped up tracker.cfg, edited original tracker.cfg, removed all folder from watchlist (for e.g. $HOME/MyDocs/.camera/and include the only folder which i want to be indexed $HOME/MyDocs/FolderToWatch/;

and issued tracker-processes -r command to rebuild index

after this, opened media player, but still it is showing all the videos recored by camera in Recorded by camera, and all audio files in Recently added section