System requirements
The following are the minimum system requirements for running Microsoft Expression Encoder:
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Operating system: Windows Vista or Windows XP SP2.
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Microsoft Windows Media Player 11 (Windows XP only).
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Processor: 1.0 GHz with MMX or equivalent.
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Memory: 1 GB RAM.
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Hard Drive: 350 MB.
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Graphics processor: Microsoft DirectX 9.0-capable video card; recommended support for Pixel Shader 2.0, with 256 MB or more of memory to support video preview. For example, ATI Radeon X300 or NVIDIA GeForce 5600 class equivalent or better.
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1024 x 768 monitor resolution with 24-bit color.
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(Optional) Video encoding hardware acceleration cards to speed up encoding processes.
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(Optional) USB or FireWire webcam for live streaming.
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(Optional) A version of Apple QuickTime not earlier than version 7.4.