| Jack |
Any female socket or receptacle, usually on the backside of video and audio equipment; accepts plug for circuit connection. |
| Jam Sync |
Process of synchronizing a secondary time code generator with a selected master time code, e.g., using the time code generated by one camera to insert the identical time code on a second camera. |
| Jitter |
Video image aberration seen as slight, fast vertical or horizontal shifting of a picture or portion of one. |
| Jog/shuttle |
Manual control on sophisticated VCRs, facilitates viewing and editing precision and convenience. Jog ring moves tape short distances to show a frame at a time; shuttle dial transports tape forward or reverse more rapidly for faster scanning. |
| juke box |
A music player with a large amount of storage capacity (generally using a hard drive) to store thousands of songs. |
| Jump cut |
Unnatural, abrupt switch from and to shots identical in subject but slightly different in screen location. Awkward progression makes subject appear to jump from one screen location to another. Remedied with cutaway. A jarring edit caused by the choice of shots rather than any technical imperfection. |
