@ IgorC:
Obviously you don't understand the main difference between still image compression and video compression.
Motion prediction and inter-frame encoding.
One single image has no motion. No surprise there is less redundancy to spare. If you compared I-frame only MPEG-2 with I-frame only HEVC, the ratio would be similarly disappointing.
Last edited by LigH; 8th June 2017 at 09:41.
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