TL;DR: yes
SmartVideo supports multiple playback speeds so your users can accelerate or slow down the speed at which they consume your content. The speeds available are:
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.75X
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1X
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1.25X
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1.5X
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2X
On desktop and roomy mobile players, the playback-rate control is a single button on the control bar that cycles through the speeds when clicked — the label updates to match the current rate (1×, 1.5×, 2×, and so on). On narrower players, the same button collapses into the three-dot overflow menu alongside the other controls.

Here’s the overflow menu on a narrow player, with Speed alongside mute and captions:

Keywords: multiple speeds , playback speed , controls , speed selection