Multimedia is one of the key drivers improving virtual reality and augmented reality (VR/AR), which are promising to reform human-computer interaction in the future with lower-cost and all-in-one headsets containing powerful hardware. Advances in multimedia research on video compression and human-computer interfaces have further enhanced the immersion and efficiency of experiences on the platform. However, many VR/AR experiences are still very difficult to build using traditional engineering methods and many available behavioral and biometric data have not been well explored. Further research in the multimedia community is needed to enhance the usefulness of these systems, with potential in affective learning, resource generation, and developer tools.