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The sample below uses a generated text event that is partially transparent. For more information, see Using generated media on page 247.
Set compositing mode for overlay track
Overlay track
Background track
The following table shows how these two sample tracks are blended using each of the compositing modes.
| Compositing mode Sample | Description |
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| Add |
| Adds the overlay color values to the background. Available only in the |
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| full version of Vegas software. |
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| Subtract | Subtracts the overlay color values from the background. Available only in |
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| the full version of Vegas software. |
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| Multiply (Mask) |
| Multiplies the overlay color values by the background color values. This |
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| makes overlay colors stronger and more present and results in a darker |
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| video image. The opposite of this mode is Screen. |
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| Source Alpha | Uses the alpha channel to determine transparency in the overlay. |
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| This compositing mode is based on the alpha channel characteristics of an |
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| event or media file. If no alpha channel is present in the overlay, the Source |
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| Alpha compositing mode has no effect. |
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| Cut |
| Cuts out the overlay color values from the background. Available only in |
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| the full version of Vegas software. |
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| Screen | Multiplies the inverse of the overlay color values with the background color |
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| values. This makes overlay colors weaker and less present and results in a |
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| lighter video image. The opposite of this mode is Multiply. Available only |
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| in the full version of Vegas software. |
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USING VIDEO FX, COMPOSITING, AND MASKS | CHP. 14 |