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Watch the tutorial
Step 1: Create an adjustment layer
Put your clip on the timeline. In the Project panel, click the New Item icon at the bottom and choose Adjustment Layer....
A small window opens with the video settings. In the video they match the footage (3840 by 2160 at 60 fps), so check that yours match your sequence, then click OK.
One click with Mako: the free Mako panel adds an adjustment layer over the selected clips, at the playhead, on the first free track, in one click. Get Mako for free
Step 2: Place it above your clip
Drag the adjustment layer from the Project panel onto the track above your video, and trim it to the length of the effect. Select it on the timeline so its settings appear in Effect Controls.
Step 3: Shape the adjustment layer into a bar
Open the Motion settings of the adjustment layer and untick Uniform Scale. Now you can scale the layer's width and height separately. In the video, Scale Width stays around 150 while Scale Height is lowered to around 57, and the Rotation is set to about 132 degrees. This turns the adjustment layer into a thin, slanted bar, and you can see its outline in the Program Monitor. Adjust the values until the bar has the angle and thickness you like.
Step 4: Add the Transform effect
In the Effects panel, search for Transform (under Video Effects > Distort) and drag it onto the adjustment layer. Because the layer is now just a bar, the effect only changes the video inside the bar. Increase the Scale of the Transform effect (around 126 in the video) so the picture inside the bar looks magnified, like it is seen through glass.
Step 5: Keyframe the bar across the screen
Go to the start of the adjustment layer and click the stopwatch next to Position in the Motion settings. Set the Position so that the bar sits just outside one side of the frame. Move forward in the timeline and change the Position again so the bar ends up outside the other side of the frame. When you play it, the glass bar sweeps across your clip. Move the keyframes closer together for a faster sweep.
Smoother with EaseFlow: select the keyframes and apply a real easing curve in one click instead of dragging Bezier handles. See EaseFlow
Step 6: Check the result
Scrub through the sweep. You should see a sharp diagonal edge with a slightly zoomed picture inside it. If the bar is too thick or the magnification is too strong, go back and change the Scale Height or the Transform Scale. You can stack a second adjustment layer with different settings if you want more than one bar.
Tips
- Match the speed to the music. A quick sweep on a beat looks great on intros and transitions.
- Change the angle. Rotation values give you a completely different look.
- Combine effects. Add a slight blur or color change to the adjustment layer for a stronger glass feel.
FAQ
Why do I need an adjustment layer?
An adjustment layer applies its effects to all the clips below it, so the Transform effect changes the footage that the bar passes over.
Why can't I change the width and height separately?
Untick Uniform Scale in the Motion settings.
Can I use the glass bar on a vertical video?
Yes. Create the adjustment layer at your sequence size and change the bar's rotation and position to fit.
Want more ready made looks? Browse the Ultimate Premiere Pro Presets.
