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MIDI timecode From Wikipedia, the free encyclopedia Jump to navigation Jump to search MIDI time code ( MTC ) embeds the same timing information as standard SMPTE timecode as a series of small 'quarter-frame' MIDI messages. There is no provision for the user bits in the standard MIDI time code messages, and SysEx messages are used to carry this information instead. The quarter-frame messages are transmitted in a sequence of eight messages, thus a complete timecode value is specified every two frames. If the MIDI data stream is running close to capacity, the MTC data may arrive a little behind schedule which has the effect of introducing a small amount of jitter. In order to avoid this it is ideal to use a completely separate MIDI port for MTC data. Larger full-frame messages, which encapsulate a frame worth of timecode in a single message, are used to locate to a time while timecode is not running. Unlike standard SMPTE timecode, MIDI timecode...

CTL timecode From Wikipedia, the free encyclopedia Jump to navigation Jump to search Control track longitudinal , or CTL , timecode , developed by JVC in the early 1990s, is a unique technique for embedding, or striping , reference SMPTE timecode onto a videotape. Similar to the way VITC timecode is embedded in the vertical interval area of a video signal, CTL timecode embeds SMPTE timecode in the control track area of helical scan video recordings. The advantage of both VITC and CTL timecode is that a precious audio track does not have to be sacrificed for linear timecode . Though a very effective technology, and still probably in limited use today, CTL timecode never really caught on. JVC is apparently the only manufacturer that included CTL timecode capability in their video products, and this was limited to select professional S-VHS equipment. When it was introduced, there was a lot of undeserved negativity about CTL timecode, because people mis...

Vertical interval timecode From Wikipedia, the free encyclopedia Jump to navigation Jump to search "VITC" redirects here. For the South African music Festival often referred to as "Vodacom In The City", see In the City (South African festival) . Vertical Interval Timecode ( VITC , pronounced "vitsee") is a form of SMPTE timecode encoded on one scan line in a video signal. These lines are typically inserted into the vertical blanking interval of the video signal. With one exception, VITC contains the same payload as SMPTE linear timecode (LTC), embedded in a new frame structure with extra synchronization bits and an error-detection checksum. The exception is that VITC is encoded twice per interlaced video frame, once in each field, and one additional bit (the "field flag") is used to distinguish the two fields. A video frame may contain more than one VITC code if necessary, recorded on different lines. This is often...

Linear timecode From Wikipedia, the free encyclopedia Linear (or Longitudinal) Timecode ( LTC ) is an encoding of SMPTE timecode data in an audio signal , as defined in SMPTE 12M specification. The audio signal is commonly recorded on a VTR track or other storage media. The bits are encoded using the biphase mark code (also known as FM ): a 0 bit has a single transition at the start of the bit period. A 1 bit has two transitions, at the beginning and middle of the period. This encoding is self-clocking . Each frame is terminated by a ' sync word ' which has a special predefined sync relationship with any video or film content. A special bit in the linear timecode frame, the biphase mark correction bit, ensures that there are an even number of AC transitions in each timecode frame. The sound of linear timecode is a jarring and distinctive noise and has been used as a sound-effects shorthand to imply telemetry or computers . Contents 1 Ge...

Burnt-in timecode From Wikipedia, the free encyclopedia Jump to navigation Jump to search Color bars with burnt-in timecode Burnt-in timecode (often abbreviated to BITC by analogy to VITC ) is a human-readable on-screen version of the timecode information for a piece of material superimposed on a video image. BITC is sometimes used in conjunction with "real" machine-readable timecode, but more often used in copies of original material on to a non-broadcast format such as VHS, so that the VHS copies can be traced back to their master tape and the original time codes easily located. Many professional VTRs can "burn" (overlay) the tape timecode onto one of their outputs. This output (which usually also displays the setup menu or on-screen display ) is known as the super out or monitor out . The character switch or menu item turns this behaviour on or off. The character function is also used to display the timecode on the p...

EECO time code reader video character generator Just another of those things you get given, over time.  It's circa 1976, ex-ADS-10 equipment (which used to be ADS-7, in a confusing switch-over of broadcasting channels, between channels 7 and 10, many years ago, due to differing interstate network ownerships).  It could be a model BE-400, but I'm not sure if that's what the BE-400 marking on the rear-panel label means (a model code, or something else).  This gadget can read audio-track time code signals and display the time code value over a video picture with adjustable sizing, positioning, video levels, etc . I hooked up audio out from a video player's SMTPE time code track to the Cannon connector, video from the player into the video in connector, and a monitor to one of the video out sockets, and saw a time code window in the traditional manner on the screen.  I presume that the multi-pin connector is for us...