Desktop + mobile reviewConsistent thumbnail ratios and clear date groups make a growing video archive easier to scan; keep the title and duration outside hover-only interactions.
A closer look
Assemble Studio.
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A few more to get you thinking.
Desktop + mobile review
Desktop + mobile reviewShow a utility in the context where it will be used, and distinguish explanatory controls from the download action.
Desktop + mobile reviewUse recognizable devices to explain a multi-platform product, then provide direct routes to the relevant platform rather than one vague start action.