Overlay_options_setoverlaypath, Overlay_options_setoverlayposition, Overlay_options_setoverlayposition() – Google Flix Engine Linux Reference Manual User Manual
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5.31 Overlay (Watermark)
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Once this function has been called successfully,
must be called to turn trans-
parency off.
Calling this method will disable masking based on RGB components.
Using a PNG or bitmap with full alpha channel will produce better results than using a transparency
color.
If using this method to add an overlay to video with an existing alpha channel, the transparent portions
of the overlay will be transparent in the output video. Opaque portions of the overlay will be averaged
with the existing alpha data.
Use the
along with
and the
and
parameters. This function will be removed in a future release.
5.31.4.9
on2sc overlay_options_SetOverlayPath (FLIX2HANDLE flix, const on2tc ∗
pOverlayFilePath)
Set the path to the overlay image file.
Parameters:
← flix Handle to the flix engine returned from
or
← pOverlayFilePath the path to the overlay image
Return values:
the path to the overlay image was set successfully
a precondition failed
the underlying communication layer failed
Precondition:
flix
is not NULL
pOverlayFilePath
is not NULL
Remarks:
This method does not check for the existence of the file at the specified path.
Only PNG images, 24 bit bitmaps, and 32 bit bitmaps are supported. Use of PNG images is highly
recommended.
Images with an uneven width or uneven height will be cropped.
Overlay images larger than the video image will be cropped.
When both the video and overlay images contain an alpha channel, the overlay and video alpha will
be averaged. For example, if the video at the overlay position was fully transparent, and the overlay
was fully opaque, the region of the exported video where the overlay was placed would become 50%
opaque.
Use the
along with
and the
param-
eter. This function will be removed in a future release.
Generated on Tue Jul 20 17:39:03 2010 for Flix Engine Linux by Doxygen