Cost Efficient Repository Management for Cloud-Based On-Demand Video Streaming
Mahmoud Darwich, Ege Beyazit, Mohsen Amini Salehiy, Magdy Bayoumi

TL;DR
This paper proposes a cost-effective video repository management method that balances pre-transcoding and on-demand transcoding, significantly reducing costs especially in repositories with frequently accessed videos.
Contribution
It introduces a novel approach to partially pre-transcode videos and dynamically re-transcode on demand, optimizing resource use and reducing costs in cloud-based streaming.
Findings
Cost reduction of up to 70% in high-access video repositories
Effective trade-off strategy between pre-transcoding and on-demand transcoding
Improved resource utilization and cost efficiency
Abstract
Video transcoding is the process of converting a video to the format supported by the viewer's device. Video transcoding requires huge storage and computational resources, thus, many video stream providers choose to carry it out on the cloud. Video streaming providers generally need to prepare several formats of the same video (termed pre-transcoding) and stream the appropriate format to the viewer. However, pre-transcoding requires enormous storage space and imposes a significant cost to the stream provider. More importantly, pre-transcoding proven to be inefficient due to the long-tail access pattern to video streams in a repository. To reduce the incurred cost, in this research, we propose a method to partially pre-transcode video streams and re-transcode the rest of it in an on-demand manner. We will develop a method to strike a trade-off between pre-transcoding and on-demand…
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