By default only one timeline is assigned
to each watermark, which makes all watermarks appear and disappear only
once. But sometimes you may want the same watermark to be displayed multiple
times, for example, appear every 1 minute for 3 seconds. Let's see what
can we do about it.
Using Timeline Mode.
First, each watermark
includes "Timeline Mode" parameter that defines the logic of
watermark's display in accordance with the specified timeline.
This parameter can take one of the following
values:
Single - if selected,
the watermark will be displayed only once in accordance with the specified
timeline.
Multiply - if selected,
the watermark will be displayed multiple times. First it will be displayed
in accordance with the specified timeline. After that the watermark will
disappear (for the time defined by the "Timeline Pause" parameter)
and appear over and over again, until the end of the video file.
Random - if selected,
the watermark will randomly appear the specified number of times. The
number of times is defined by the "Number of Displays" parameter.
Whatever mode you choose, don't forget
to edit the watermark's timeline
properly. Each time the watermark appears, it will be displayed for the
time equal to the duration of the specified timeline.
Using Fade.
Second, each watermark
can be affected by the Fade
dynamic effect. This effect can be applied multiple times, which allows
to make the watermark hide and appear repeatedly.
Using text watermark's advanced
features.
Third, if you want to
display several different text strings for the same time and with the
same pause between them, make use of the text
watermark.
Create a text file with
several text strings inside. Then add
a text watermark and set its parameters as follows:
Now edit the watermark's timeline
to define the start point and duration of the first string's display.
In the produced file the strings will be shown
one after another. The pause between them is defined by the "Pause
Time" parameter.
Finally, let's consider the situation when
you need to display several different strings not regularly, but for the
specified time (i.e. create subtitles). Here the text
watermark comes to our help again.
Now it is necessary to create a SRT file. It
has a very simple structure. For example:
1
00:00:04,000 --> 00:00:07,000
First string
2
00:00:09,000 --> 00:00:12,000
Second string
With the above SRT file, "First string"
and "Second string" will be displayed from 4-th to 7-th second
and from 9-th to 12-th second correspondingly.
Then add
a text watermark and set its parameters as follows:
When using an SRT file
as the source for a text watermark, the watermark's timeline
will be ignored. However, it can be used when applying
dynamic effects to the watermark.