What is a slit-scan effect?

It is a time-displacement effect in which different parts of the frame show different moments, so moving subjects look stretched or bent.

Where is slit-scan in HEXTAZE?

In the WARP effect, in the SLICE mode: pick WARP, pick SLICE, move.

Is it done live or in post?

Live. The effect is rendered into the clip while you shoot, so the clip is ready to post.

Does it work for photos?

Slit-scan needs a past, so it shines on video; HEXTAZE also takes photos with the current look.

Slit-scan effect on iPhone

To get a slit-scan (time-slice) effect on iPhone, film it live with HEXTAZE: it is the SLICE mode of WARP. Every line of the picture is delayed more than the one above it, so each line shows a different moment and anything that moves bends and stretches. HEXTAZE keeps the last 32 frames in GPU memory, which is how each line gets its own moment.

Steps

Open WARP. Choose WARP on the effect ribbon. It has five ways to leave the clock of the world: ECHO, RGB, SLICE, HITCH and SWING.
Pick SLICE. SLICE is the slit-scan: each line is delayed more than the one above it.
Set the strength on the XY pad. For WARP, X is how far back in time the delay reaches and Y is how much effect you get. Start with Y low and bring it up.
Move. Slit-scan only shows when something moves. Walk across the frame, turn your head, wave a hand, or pan the phone slowly.
Try a related look. SMEAR also shows a different moment in each part of the picture, following a map (vertical, horizontal, luminance, radial or mirror).
Record. Press the red key. The rendered picture is recorded with the slit-scan in it.

Good to know

The effect can be applied to you alone or to everything but you, thanks to on-device person detection.
Chain it with another effect (up to three, each on its own zone) in Settings › Chain.
WARP's HITCH and SWING lock to the tempo if you set one: see syncing effects to the beat.

Questions

What is a slit-scan effect?: It is a time-displacement effect in which different parts of the frame show different moments, so moving subjects look stretched or bent.
Where is slit-scan in HEXTAZE?: In the WARP effect, in the SLICE mode: pick WARP, pick SLICE, move.
Is it done live or in post?: Live. The effect is rendered into the clip while you shoot, so the clip is ready to post.
Does it work for photos?: Slit-scan needs a past, so it shines on video; HEXTAZE also takes photos with the current look.

Everything is free to play: takes up to 8 seconds, with a small HEXTAZE mark. One purchase of 5,99 € (not a subscription) removes both limits. Some looks flash on the beat: skip them if flashing light affects you.

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