Current mobile devices and streaming video services support high definition (HD) video, increasing expectation for more contents. HD video streaming generally requires large bandwidth, exerting pressures on existing networks. New generation of video compression codecs, such as VP9 and H.265/HEVC, are expected to be more effective for reducing bandwidth. Existing studies to measure the impact of its compression on users' perceived quality have not been focused on mobile devices. Here we propose new Quality of Experience (QoE) models that consider both subjective and objective assessments of mobile video quality. We introduce novel predictors, such as the correlations between video resolution and size of coding unit, and achieve a high goodnessof-fit to the collected subjective assessment data (adjusted Rsquare >83%). The performance analysis shows that H.265 can potentially achieve 44% to 59% bit rate saving compared to H.264/AVC, slightly better than VP9 at 33% to 53%, depending on video content and resolution.
|Title of host publication||MM 2015 - Proceedings of the 2015 ACM Multimedia Conference|
|Publisher||Association for Computing Machinery, Inc|
|Number of pages||10|
|Publication status||Published - 13 Oct 2015|
|Event||23rd ACM International Conference on Multimedia, (MM2015) - Brisbane, Australia|
Duration: 26 Oct 2015 → 30 Oct 2015
|Conference||23rd ACM International Conference on Multimedia, (MM2015)|
|Period||26/10/15 → 30/10/15|
- Mobile device.
- QoE modeling
- Video quality assessment