User manual

64
certain rare conditions is it necessary to delve deeper into this process. Two problems
can occur:
Interlace artifacts
To be displayed on a computer monitor the two fields must be combined to form a full
screen.
These two fields are not the same, since two fields are created during the recording
(between which a 1/50 of a second gap is evident). Moving objects can therefore
produce artifacts at the vertical edges.
Typical interlacing errors
You can use so-called "de-interlacing" to avoid these artifacts. A picture in between
the two fields is created (interpolated). So if you want to create stationary pictures
from movies, then you should definitely use a de-interlace filter.
In the system settings (File menu-> Program settings) you can set the preview
monitor display to use hardware de-interlacing during video recordings, for the video
recorder, and for display in the arranger.
Incorrect field rate
If you move around the series of fields in a movie data stream you can see strong jitter
and flicker effects. Picture objects move in a backward movement - two steps
forwards, one back - since a delayed field is shown before the previous one. This can
happen in the processing chain if you export video material improperly with the wrong
field order and then import it into different material.
We use MXV or MPEG "Top field first" format for all analog recordings ("odd" in
other programs). DV-AVI on the other hand is saved with “Bottom Field First”.
You can correct the field series for each video object in its object settings (view page
47). See: Menu -> Effects -> Ob
ject properties