# Video Parameters

{% hint style="info" %}
Note: This subset of parameters is not supported for macOS virtual machines.
{% endhint %}

**--videosize** <*num*>

Sets the amount of memory for the virtual machine graphic card (in megabytes).

**--3d-accelerate** <**off** | **highest** | **dx9**>

Sets 3d acceleration video mode.

**--vertical-sync** <**on** | **off**>

Enables or disables vertical synchronization.

**--high-resolution** <**on** | **off**>

Enables or disables high resolution video mode for retina display.


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