Here's how much space Apple's new HEVC video format saves on an iPhone 8
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Apple's new high efficiency video codec fits a minute of 4K 30fps video in 170 MB, compared to 350 MB before

Well, as you can see in the shot above, Apple lists a minute of 4K 30fps video on the iPhone 8 to occupy approximately 170 MB, whereas the same amount, definition and frame count was previously listed to take the whopping 350 MB, as you can see on the right.
Thus, the promised 50% reduction in storage space needs that HEVC is supposed to bring may hold water in the end. Still, if you shoot in the new 4K 60fps format, a minute of such detailed footage will ring in 400 MB of your storage, so plan accordingly.
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