Tutorial 4: Speed droops

The first both markers

At first you adjust the basic speed of the sound to the video in the same way as it was the subject of the third project. Define at the first and at the last hammer blow in each case a Spline marker and adapt there by means of its correction value the sound to the picture. Put the spline markers apart as far as possible in order to improve the accuracy.

Remaining divergencies

After you have established in this way the synchronous run at two places, the divergencies remained in the remaining video are caused either by a speed droops or by offset leaps, or even by both error kinds in combination. Ideally, speed droops should be compensated by means of an soft against-steering correction curve (thus with spline markers), while an offset leap (as, for example, a place shortened due to a film break) is to be corrected using an appropriate cut.

So far the theory. In practice, however, it is not at all simple to identify the respective cause clearly. In particular, if picture and sound are of completely different origin, you must literally "count on everything". It is then often not easily possible to differentiate clearly between both error kinds. The documentation included in the AV Adjust package contains an example project with the detailed description of a solution strategy, if speed droops and offset leaps could exist together.

In the preview now can be seen that at the remained hammer blows the sound still appears too late. In order that the tutorial does not break the banks, we here betray to you that we have only speed droops.