About timecode source and clock synchronization
Timecode is a continuous sequence of data embedded in a clip from beginning to the end in order to provide time reference for logging, synchronization, and tracking. It enables editing of a media file by identifying specific timeframe, and marking those in and out timecodes as reference points. There are several timecode sources depending on the recorder and timecode generator of the media file.
| Timecode Source | Description |
|---|---|
| AncVITC | Available on HD channels only. Timecode is read from ancillary VITC. |
| VITC | Available on SD channels only. Timecode is read from the VITC input for the channel. |
| LTC | Available on HD/SD channels. Timecode is read from the LTC input for the channel. |
| AncLTC | Available on HD channels only. Timecode is read from ancillary LTC. |
| Time of Day | Available on HD or SD recordings. Time of Day is an internal generator. You can select either LTC feeds or Windows system clock as the clock source to drive the generator. LTC feeds can be from Channels 1, 2, 3, or 4. |
| Start Time | Available in HD or SD. When Start Time is selected, you can specify the timecode to use when the recording starts. The drop frame option is enabled when the system timing is set to the 525 line standard (NTSC). Drop frame timecode allows the generator to operate as an accurate clock. |
Clock synchronization is required on all GV STRATUS servers and K2 Summit/SAN systems. Ensure that K2 Summit/SAN systems are locked to house reference and clocks on all machines are kept in sync. This is especially important on systems with Ingest Scheduler and Scheduled Transfer tools, as they must be kept in sync with the GV STRATUS Core server and K2 Summit/SAN systems.