User manual

DVO Effects

318

UM-2014.1-07

DVO Line Sync

Line sync or line jitter is a very common problem with archived analog video

tape.

It is typically caused by the lack of (or disturbances with) line synchronization

pulses which prevents the the video tape recorder from locating the actual

start and end of each line. This causes random line displacement (jitter).

The most visible effect is that vertical edges appear to be jagged. The jitter

can range from +/-1 pixel to more than +/-5 pixels in severe cases. DVO Line

Sync automatically detects and corrects these line displacements as well as

any stretching it causes.

Parameters

Enable

When enabled, DVO Line Sync will process the input as per the settings

described below.

Detection Strength

Detection Strength controls the degree of jitter detection with a higher number

meaning a higher degree of detection.

If the Strength parameter is pushed too high, we may correct lines

unnecessarily and introduce jitter. Analyse the resulting output before

committing to a long render.

Note that the processing time is dependent on detected (and

processed) lines. The more line sync issues we find, the longer it will

take to process.