Clearly a single student in a large group watching a video collectively cannot expect to stop and start the action at will. However, in smaller groups analysing the video individual control might be acceptable, while for private preview or followup study such control is vital. In either case there should be no reason why a separate monitor should not be provided, thus allowing image optimisation even where tape transport control would be disruptive. Optimum access also depends on where the controls are situated. Lets assume that students are reviewing material privately, and therefore will need to operate both tape recorder and screen.
Remotes are cheap, and can be laid on the desk in front of the student, easily to hand.
They are robust, and often clearer than the miniature, flap hidden set controls. Seeing details Image contrast needs to be adjusted carefully, and may need readjustment mid programme. An individual smaller monitor can often provides a clearer picture with better contrast than a large screen. Scanning for fine detail often means pausing the tape, and searching back and forth for a particular frame. It may be necessary to adjust the brightness controls and compensate by adjusting the overall contrast.