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Batch Video Export
Before
exporting a
video with
FACSGen,
please read the "
Installing FFmpeg for
FACSGen"
section.
FACSGen allows the
automatic generation of
large sets of
images/
videos, by
realizing all
combinations of any
number of
faces (
identities),
dynamic expressions, and
lighting conditions.
For
instance,
let's
assume we have 5
dynamic expressions that we want to
apply to 10
different faces.
Instead of
generating each of the 5*10 = 50
videos individually, we'll use the
batch video export system.
As a
preparation step, we must
prepare the following
things:
Once this is
ready, we go to:
File => Dynamic Expression => Export Video...
In the first
tab (
Dynamic Expression ), we're going to
select Whole Directory .
By doing so, we're telling
FACSGen that we want to
generate videos for
multiple dynamic expressions, not just the
current one.
In the
Location box below, we
browse for the
directory we've
prepared above.
The same
principle applies in the
Face tab; we
select Whole Directory and
browse for the
directory prepared above.
In the
present example we'll
simply use the
default lighting setup so we're
leaving the
Lighting tab unchanged, with the
Current radio button selected.
Finally, in the
Output tab, we're going to
define the
image size,
frame rate, and
location of the
videos to be
generated.
The
Prefix field just
provides a
mean to add a
prefix to the
name of all
generated files (for the
user's
own organizational purposes), and has absolutely no
effect on the
content of the
generated images/
videos. It can be
left empty.
Please
make sure that the
Create Videos box is checked.
At this
point, everything is
ready to
generate our
videos. We can now
click on
Ok and be
patient.
The
generation time depends on a
number of
factors:
As the
video export process can be quite
slow, it is
recommended that you first
try out your
design on a
small number of
faces and
dynamic expressions.
Typically, a
subset of your
design (
approximately 3-5
faces and 3-5
dynamic expressions) allows you to
ensure that everything is
fine.
Also, using a
low frame rate (say, 5) and
small images dimensions will
speed up the
process and allow for
fast preliminary tests.
Only when you're
ready and have a
precise idea of what you'll get as an
output,
launch the
export process for you
complete design.
Be aware that
generating long videos on
hundreds of
faces can quickly
span on
several days.