Jog / Shuttle
A jog / shuttle is a combined control element in imaging devices such as video recorders , laser discs , DVD players , etc. and is mainly used to find an exact video position in still image mode. It is therefore particularly found on devices that are used for video editing .
origin
Around 1980, electronic reporting caught on across the board. To do this, video tapes had to be cut and played back quickly and precisely to the frame. The electronic tape machines and editing desks have been equipped with jog / shuttle controls for fast work - and in order to be able to maintain the intuitive, familiar operation of the cutting tables.
Implementation in the broadcast area
In shuttle mode, the belt speed and direction is regulated in fine steps using the rotary knob; the button (on the recorder or editing desk) mimics the stepless speed controller on an editing table. In jog mode, the film rewinds forwards or backwards frame by frame when turning slowly, as is the case with manual turning of the film reels on the cutting table. Switching between these two operating modes is done using buttons ("Jog" / "Shuttle"). Many devices offer a third mode ("Var"); The wheel functions as a jog dial when turned very slowly and changes to shuttle mode when it is suddenly deflected; this is held until "freeze frame" is reached.
Professional editing consoles have two jog / shuttle control buttons for player and recorder, depending on the space available.
Takeover in the consumer sector
Since consumer video equipment was originally used to record entire films, it was initially not necessary to work with individual frames. With the spread of camcorders at the end of the 1980s, video amateurs also had a need for single-frame editing. In many cases, high-quality video recorders were therefore equipped with jog / shuttle operation (on the device or via remote control), which also enabled the camcorder to be operated with a remote control cable (as a player when editing).
In the majority of consumer devices, the operating modes are divided into two operating elements: The jog dial is a ring gear (with limited deflection) with the rotary knob for the jog dial in the middle. In the broadcast area, however, this remained the exception (in the picture the lower device).
Non-linear cut
Even after the tape machines were replaced by digital memories, the editing desks with jog / shuttle operation were mostly retained in the professional sector. In editing software for private users, it is often reproduced on the screen using the mouse wheel or slide control.