Power-Efficient Video Streaming on Mobile Devices Using Optimal Spatial Scaling
| Autor: | Andre Kaup, Christian Herglotz, Stephane Coulombe, Ahmad Vakili |
|---|---|
| Rok vydání: | 2023 |
| Předmět: |
FOS: Computer and information sciences
Computer science media_common.quotation_subject Real-time computing Image and Video Processing (eess.IV) 02 engineering and technology Electrical Engineering and Systems Science - Image and Video Processing Power (physics) Multimedia (cs.MM) Metric (mathematics) 0202 electrical engineering electronic engineering information engineering Cellular network FOS: Electrical engineering electronic engineering information engineering 020201 artificial intelligence & image processing Quality (business) Video streaming Mobile device Scaling Computer Science - Multimedia media_common |
| Zdroj: | ICCE-Berlin |
| DOI: | 10.48550/arxiv.2307.08337 |
| Popis: | This paper derives optimal spatial scaling and rate control parameters for power-efficient wireless video streaming on portable devices. A video streaming application is studied, which receives a high-resolution and high-quality video stream from a remote server and displays the content to the end-user.We show that the resolution of the input video can be adjusted such that the quality-power trade-off is optimized. Making use of a power model from the literature and subjective quality evaluation using a perceptual metric, we derive optimal combinations of the scaling factor and the rate-control parameter for encoding. For HD sequences, up to 10% of power can be saved at negligible quality losses and up to 15% of power can be saved at tolerable distortions. To show general validity, the method was tested for Wi-Fi and a mobile network as well as for two different smartphones. Comment: 6 pages, 7 figures |
| Databáze: | OpenAIRE |
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