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If you meant "what paper to use" for printing snapshots taken with YouCam 4: YouCam 4 supports a direct feature when in "Stand-alone Mode". You can use standard Glossy Photo Paper Matte Photo Paper

YouCam 4 functions primarily as a bridge between your webcam and various instant messaging services, adding a layer of creative and utility tools: YouCam | The Best Webcam Software for Windows - CyberLink Of Cyberlink Youcam 4

What exactly did you get inside the box (or download) ? The feature set was surprisingly robust. If you meant "what paper to use" for