nice to see full detailed answer Biswa bhai.biswajit.HD said:In recent years, the advent of the digital video recorder (DVR) has made time shifting easier, by using an electronic program guide (EPG) and recording shows onto a hard disk. Some DVRs have other possible time shifting methods, such as being able to start watching the recorded show from the beginning even if the recording is not yet complete.
Fast forward/Rewind and Next/Previous buttons are used during playback of recorded tracks from the external storage device (Pen drive or external hdd).