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Advances, Systems and Applications

Journal of Cloud Computing Cover Image

Table 1 Parameters in the experiment for finding the minimum count of vCPU cores in a VM, which achieves real time speed in transcoding

From: Online architecture for predicting live video transcoding resources

Parameter Description
Resolution (bit rate) 256 × 144 (197 kilobits per second (kbps)), 426 × 240 (338 kbps), 640 × 360 (829 kbps), 854 × 480 (1380 kbps)
Video files 50 popular video files (length > 4 min). Resolution: 1920 × 1080, 24 Frames Per Second (FPS), Video format: MKV
Test length 3 h (a new transcoding task every 4 min)
Audio encoding AAC (128 kbps)
Video encoder H.264, GOP length = 24, closed-GOP
Output format DASH ISO Based Media File Format, segment length = 1 s
Video transcoder FFmpeg with real time flag (simulates live transcoding)