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Topic: Linear timecode

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	Linear timecode
		Linear (LONGITUDAL) Timecode (LTC) encodes SMPTE timecode data as a Manchester-encoded audio signal.
		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'.
	www.ebroadcast.com.au /lookup/encyclopedia/lt/LTC.html (105 words)

	XO Wave: All about Time Code
		This type of timecode is called LTC (pronounced "LIT-see"), or Linear Time Code, because most traditional video formats carry analog audio information in a linear track on the edge of the video tape, whereas video is stored in diagonal bands through the middle of the tape.
		VITC timecode allows you to free up the audio tracks on video tape (although these are generally of poor quality) and it can allow you to read the timecode even when playback is paused.
		Timecode formats are commonly written as the frame rate followed by ND for non-drop or DF for drop-frame.
	www.xowave.com /doc/recording/timecode.shtml (1297 words)

	Linear timecode - Wikipedia, the free encyclopedia
		Linear (or Longitudinal) Timecode (LTC) encodes SMPTE timecode data as a Manchester-Biphase encoded audio signal.
		In broadcast video situations, the LTC generator should be tied-in to house fl burst, as should all devices using timecode, to ensure correct color framing and correct synchronization of all digital clocks.
		LTC timecode is essentially an audio signal around 2 kHz in frequency.
	en.wikipedia.org /wiki/Linear_timecode (552 words)

	SMPTE Timecode in the DTV Era
		Timecode used in television – i.e., 30, 29.97 and 25 fps – may be one of two varieties: linear timecode or, as it was formerly known, longitudinal timecode (LTC) and vertical interval timecode (VITC).
		This type of timecode may be recorded on analog audio tracks and was called longitudinal timecode because it was recorded on the longitudinal or linear (as opposed to FM or some other technology) audio tracks of video tape recorders.
		Timecode is fundamentally a way to label frames to keep track of them and either drop or nondrop timecode will uniquely identify each frame.
	www.tvtechnology.com /features/Tech-Corner/f-rh-smp.shtml (1268 words)

	What is Timecode?
		Timecode normally gets laid at the same time because it is a standard function of broadcast quality machines.
		Short answer to "what is timecode?": It refers to a number that correspondes to an exact frame on the video tape.
		Timecode runs on the 24 hour clock cycle, meaning from 00:00:00.00 to 23:59:59.29 (remember 30 frames per second for NTSC).
	www.itg.uiuc.edu /help/timecode (2787 words)

	Burnt-in timecode - Wikipedia, the free encyclopedia
		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.
		Timecode can also be superimposed on video using a dedicated overlay device, often called a "window dub inserter".
	en.wikipedia.org /wiki/Burnt-in_timecode (352 words)

	[No title]
		SMPTE timecode is the standard timecode format used on all non-digital media, such at Beta and SVHS.
		One important thing to note about recording DV timecode on the DV Cam is that it always starts at 00:00:00:00 if there is not timecode present already on the tape.
		Pre-Rolling Timecode Whenever you are recording using timecode, five to ten seconds of timecode should be recorded before you begin recording the desired material onto the tape.
	www.itg.uiuc.edu /help/avdoc/timecode/timecodeFormats.doc (1048 words)

	SYNCHRONIZATION - Part 1
		Timecode carries two pieces of information; Positional reference, as I briefly mentioned, which assigns a unique time value to every consecutive part of the audio signal, and clock reference, which indicates the speed of the machine.
		The timecode signal must be created from a generator of some type, which may be a separate generator box, or maybe you have a software program that can generate timecode and send it out to be recorded onto tape.
		If you cannot afford a timecode generator, one thing you can do is find someone who has a generator, and have them burn you a disc with timecode for the full length of the disc so you can always use that to print to tape.
	www.recordingeq.com /EQ/req0900/smpte.htm (1632 words)

	audioMIDI.com : Sync Basics
		Timecode is simply a way of recording a "time" along with either a visual or audio event.
		SMPTE timecode is often used in an audio-only setting is to sync-mix automation or sequenced keyboard parts to an analog multitrack deck.
		It is linear in the same way that tape is linear – what this means is that, just like audio, if the tape is stopped there is no timecode being produced, just as there is no audio.
	www.audiomidi.com /classroom/proaudio/sync_basics.cfm (1627 words)

	Time Code
		This volume, being the first in a series on timecode for the field recordist, requires that a little history be discussed.
		It consisted of a very accurate timecode generator module neatly designed to be mounted beneath a Nagra IV-S recorder and a companion digital slate with an LED timecode readout.
		Of course, if the recorder was set to record-run the timecode would stop when the recorder stopped while the slate's timecode continued to run, thus causing them to be out of sync with each other.
	www.trewaudio.com /timecode1.htm (1368 words)

	DV-EDITING.com \| The Editing Information Source (Site not responding. Last check: 2007-09-17)
		Linear video editing is the process of selecting, arranging and modifying the images and sound recorded on video tape whether captured by a video camera or recorded in a studio.
		Timecodes are added to film, video or audio material, and have also been adapted to synchronize music.
		In general, SMPTE timecode frame rate information is implicit, known from the rate of arrival of the timecode from the medium, or other metadata encoded in the medium.
	www.dv-edit.com (3834 words)

	Intro to Timecode & Practices for Recording Source Tapes (Site not responding. Last check: 2007-09-17)
		Having the timecode "permanently" associated with the video means that frame-accurate "cue sheets" can be drawn up, so that the director or editor can find important points in the program just by seeking to a specified timecode number.
		Timecode thus allows editing sessions to be spread out over days or even weeks, with perfect confidence that any edit point can be precisely re-visited at any time.
		This is easily arranged using exactly the same procedure as described later on; the only difference is that program video and/or audio is routed to the recorder in place of fl(video) and silence(audio).
	ftp.arl.army.mil /~mike/tv/timecode.html (334 words)

	HomeMovie.Com: Technical Tips: Timecode Issues
		Since the introduction of DV and digital tape formats, timecode has become a crucial means of referencing and indexing our digital video.
		This term refers to embedded timecode that does not begin and end with a single continuous sequential counting number.
		Broken timecode is described as timecode that is sequential but alternates every other frame with a consistent non-sequential number.
	www.homemovie.com /prozone/tips/prozone_tech_tips_timecode_issues.htm (400 words)

	Glossary
		MXF has full TimeCode and metadata support, and is intended as a platform-agnostic stable standard for future professional video and audio applications.
		SMPTE TimeCode may be of either the drop-frame or non-drop frame type.
		A TimeCode number is a series of 8 digits (SMPTE TimeCode) which represents the hour, minute, second, and frame number of video.
	www.merging.com /vcube/Pages/Help/Glossary.html (2961 words)

	Timecode FAQ
		Timecode is important because it identifies individual frames of your video and is used throughout any video editing system.
		Likewise, if a video tape has discontinuous timecode similar confusion occurs for a non-linear editing system, in particular when it comes to finding a clip on tape again during batch capture.
		I believe the idea of pre-striping comes from the days of analogue linear editing systems, where the normal way of working was to lay down material one track at a time: first pre-stripe the tape to lay down a control track, then record the audio, then cut the video to the soundtrack using insert editing.
	www.squarebox.co.uk /users/rolf/dv/tcfaq.html (1230 words)

	dropframetimecode - an open source drop-frame timecode calculation
		In production, (editing) timecode is a means of identifying video frames, but in (master control) presentation, timecode is used to synchronize activities along a timeline.
		Timecode is a useful, (good enough) but not perfect bridge between the production and presentation aspects of television.
		But as new technologies start to move timecode data across these domain, it is more important to acknowledge and accommodate the differences.
	www.dropframetimecode.org (545 words)

	Tech at The Journalism School :: TV and Video
		The test that you have successfully set the Timecode preset and have placed the deck in RUN REC mode is to press only the record button on the deck.
		If the number that you had set your timecode to start at is displayed on the deck and is stationary, then you have done it right.
		Taking note of the timecode number that is displayed at that point, go to your timecode preset button on your decks flip-out menu and bring up the timecode preset screen.
	www.jrn.columbia.edu /students/tech/tv_faqs.asp (1198 words)

	Telecine Definitions
		Timecode is a digital word that is recorded on the videotape.
		The Timecode word is still present on line one and the Userbit portion is now free to be used for other purposes such as the lab roll number.
		The correlation of Timecode to Keycode is contained within these files, which are used to go from a video edit to film cut.
	www.monacosf.com /articles/telecine_defs.htm (809 words)

	Features of Open System DV & IEEE-1394 Non-Linear Editing Solutions:
		Timecode capture is another technology that allows you to circumvent the 2 GB file size limit.
		Clip logs (lists of the timecodes for the in-points and out-points for a series of clips on a tape) can also be generated automatically by some DV capture utilities.
		Since timecode allows you to seamlessly stitch together multiple clips it can be used to circumvent the 2 GB (9 minute) filesize limits of individual QuickTime and AVI media files.
	www.well.com /user/richardl/Features.html (3951 words)

	The DV, DVCAM, & DVCPRO Formats -- tech details, FAQ, and links.
		The timecode in 525/59.94 "NTSC" DV is drop-frame (DF) by default, while the TC for 625/50 "PAL" DV is of course non-drop frame (NDF).
		The SMPTE/EBU timecode standards define where the timecode is recorded on tape, what amplitude the signal is, the encoding of the digital data, and so on.
		In such systems, timecode data flow across the same wires as the control data; it's up to the VTR to read timecode however it's written on the tape and turn it into a simple serial communications byte stream.
	www.adamwilt.com /DV-FAQ-editing.html (10648 words)

	Video University: Video University Forums: Tech Q & A: How to stop VCR from recording timecode from deck?
		I am transferring FCP (version 1.2.5) footage from a Sony DVCAM DSR-20 deck to a Sony SLV-N71 VCR and the timecode is recording onto the VHS tape as well.
		Therefore, I would guess that what you mean is that the timecode (or, more likely, the hours, minutes, and seconds display) is appearing on the screen.
		This could be due to the DSR-20 displaying the timecode on screen, and the playback deck recording it (most likely possibility).
	www.videouniversity.com /forums/gforum.cgi?post=54878 (353 words)

	MIDI timecode
		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.
		Unlike standard SMPTE timecode, the eight-message MIDI timecode sequence carries a two-bit flag value that identifies the rate of the timecode, specifiying it as either:
	www.ebroadcast.com.au /lookup/encyclopedia/mi/MIDI_timecode.html (100 words)

	Alcorn McBride SMPTE Machine Features
		The SMPTE Machine is a linear timecode (LTC) reader and generator for both small and large applications.
		Then, whenever it read or generates that timecode, it sends a message to the show controller's programming port, commanding the appropriate sequence to start.
		In addition to its other tricks, The SMPTE Machine translates MIDI timecode to SMPTE or EBU and vice versa, at all frame rates.
	www.alcorn.com /products/smptemachine/index.html (316 words)

	MusicForTheMedia.com Forum - Midi time code
		LTC is where the timecode (either EBU or SMPTE) is encoded into an audio signal and recorded on to a spare audio track.
		VITC is not often encountered in our job, but is where the timecode is encoded on to a spare line of the video signal (just like ceefax or teletext).
		The timecode that you see appearing on the screen of the MFTM videos and AVI files, is 'burnt-in timecode' and is simply a means of displaying the timecode within the picture to make it easy to see what frame number you are looking at.
	www.musicforthemedia.com /forum/topic.asp?TOPIC_ID=430 (822 words)

	FAQ Glossary of Terms16mm 16 mm 8mm 8 mm Super8 Super-8 Super 8 to DVD mini DV VHS BetaSP
		This is usually caused when there is not timecode to lock to or when the record machine power source was faulty causing the recording to vary in speed.
		TIMECODE: The numbering system adopted by SMPTE that assigns a number to each video frame indicating hours, minutes, seconds and frames.
		For example, traditionally, closed captioning information is placed on line 21, but you cannot see closed captioning on your TV set unless you are running your signal through a box that decodes the information and puts it in a window on your screen.
	www.goaggressive.com /8mmFAQ.html (5865 words)

	Alcorn McBride 1746-SMPTE Features
		Linear timecode reader and generator for SLC500 PLCs.
		The 1746-SMPTE Machine is a linear timecode (LTC) reader and generator for Allen Bradley SLC500 PLCs.
		It reads and generates SMPTE or EBU, and allows the PLC's ladder logic to control and monitor the timecode.
	www.alcorn.com /products/1746-smpte/index.html (138 words)

	* * Timecode * * - The Digital Video Information Network
		When logging a tape so someone else can edit, you'd use the timecode to mark locations of good takes or whatnot on your tape, so the editor can say, "ah, at 6:53:47:22 is the take of scene 3 where the actor doesn't screw his lines up!"
		Unlike a control track, the timecode will be the same throughout the tape regardless of where you start it, but if you shoot a scene then switch to VTR and look at your footage, it will reset to 0:00:00:00 when you start recording again.
		Note that NTSC DV timecode is either drop frame or non drop frame.
	www.dvinfo.net /conf/showthread.php?t=5292 (830 words)

	Timecode Feb'00
		TOD timecode is only useful for synching rushes when that's the only method of synching available, otherwise no one wants to know.
		The timecode specs are really the editor's call since the cutting room is the place that has got to sort out the production.
		Timecode on audio tracks is an emergency get-you-by for logging and rough sync but is frame inaccurate.
	www.cix.co.uk /~ibsweb/archive/tcode0002.html (4404 words)

	Timecode (2000) (Site not responding. Last check: 2007-09-17)
		from Jersey City, NJ "Timecode" is not conventional filmmaking, which is the whole beauty of it.
		"Timecode" transcends the dullness of the reality shows and, in a way, the "Blair Witch Project" (which is another reality-based film shot entirely on a hand-held camera, but executed very poorly).
		The material is engaging to a degree, the actors perform it very well and everything is down-to-earth to preserve its sense of realism.
	www.imdb.com /title/tt0220100 (806 words)

	Timecode A User's Guide (3rd Edition) - MIDI Classics
		Comprehensive technical coverage of timecode provides a complete overview of the technology Have the most up to date information on working practices at your fingertips Benefit from the expertise and inside knowledge of the author
		Recent radical changes in timecode technology, location shooting and post-production working practices have been brought about by the fragmentation of the television programme making industry and by a dramatic increase in affordable digital transmission and editing equipment and systems.
		Timecode: A User's Guide is an indispensable reference for anyone needing to get to grips with the many aspects of timecode, whether in-house or on location.
	www.midi-classics.com /b/b3026.htm (302 words)

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