I have simply loaded a file and taken a clip from it.
I have done nothing to it (no color correction, etc.).
Note the input screen looks like the original clip
(purplish, hazy, and faded) while the output screen
looks darker and clearer. When I EXPORT this
the exported file looks like the original.
Why does the export look like the original and
not the output window?
Why does the output window not look like
the input window if I have done nothing to the clip?
The editor uses the hardware YUV overlay for video
display in the monitor window whenever available.
Due to the design of the hardware and Windows
DirectDraw API, there can only be one window
that uses the YUV overlay. This means that it
will be either the Input or the Output monitor that
uses the YUV overlay display at any time.
In terms of visual appearance, the YUV overlay
display uses the YUV video data as decoded from
an MPEG file to directly control the video display
hardware without going through the normal YUV
to RGB color conversion, and the image color on
the monitor window using the YUV overlay looks
better than the one not using the YUV overlay.
Furthermore, there is one more additional hardware
control called the YV12 pixel format, which some
time causes a software compatibility problem for
some video display controller. When this problem
occurs, the monitor window that uses the YUV overlay
may become black. In this case, you will need to
turn the YUV overlay mode OFF via the option control
at "Options...->Preview" to select the "RGB Only"
One note about the selection of the YUV overlay
for the two monitors: the editor will assign the YUV
overlay to the two monitors on the basis of "first come
You may override this arbitrary assignment to only one
monitor by changing the default selection in the Preview
Other FAQ (Frequently Asked Questions)