Premiere Pro

mouzsplit: every feature, listed

Updated 2026-10-31 · read from the panel's own code

Builds split-screen sequences in Premiere Pro: choose what each pane shows from the source, where it goes in a new frame, with timed layout keys. 37 tools, presets, styles, effects and actions in 6 groups. mouzsplit comes with mouzeclick: one plan with everything included, $25 a month.


Header 7

  • 9:16Preset

    Sets the new sequence frame to 1080 × 1920 vertical.

  • 1:1Preset

    Sets the new sequence frame to a 1080 × 1080 square.

  • 4:5Preset

    Sets the new sequence frame to 1080 × 1350 portrait.

  • 16:9Preset

    Sets the new sequence frame to 1920 × 1080 landscape.

  • Read the sequence againAction

    Reads the active sequence again: its cuts, length and current frame.

  • Clean viewTool

    Hides pane outlines and names in the new-frame preview.

  • Build sequenceAction

    Makes a new sequence with the source nested once per pane, cropped and placed; several keys become hold keyframes.

Views 3

  • Source · what each pane showsTool

    Drag or resize each pane's window on the source frame to choose what that pane shows.

  • New frame · where it goesTool

    Drag or resize cells in the new frame; shared edges move together, Alt moves one or disables snapping.

  • Timeline stripTool

    Click or drag to move the playhead; shows layout keys as diamonds and cuts as ticks.

Layout keys 5

  • Previous keyAction

    Jumps the playhead to the previous layout key ([).

  • Next keyAction

    Jumps the playhead to the next layout key (]).

  • Key hereAction

    Adds a layout key at the playhead so changes hold from there on (K).

  • Remove keyAction

    Removes the layout key in force at the playhead; the layout before it carries on.

  • Keys at cutsAction

    Adds a layout key at every cut in the source, each starting as the layout in force there.

Layout 8

  • Stacked halvesTemplate

    Two panes stacked top and bottom, each half of the frame.

  • Face on top (1/3)Template

    Face pane in the top third, game pane in the bottom two thirds.

  • Big with a cornerTemplate

    Full-frame main pane with a small corner pane at top right.

  • Side by sideTemplate

    Two panes side by side, left and right halves of the frame.

  • Three rowsTemplate

    Three panes stacked in rows, each taking a third of the source width.

  • Grid of fourTemplate

    Four panes in a 2 × 2 grid, each showing a source quarter.

  • Reframe (one)Template

    One pane filling the new frame from a centre strip of the source.

  • GapTool

    Sets spacing in pixels (0–80) between cells for the next layout picked.

Panes 5

  • AddAction

    Adds another pane, one more copy of the source, to every key.

  • RemoveAction

    Removes the selected pane; at least one pane must remain.

  • Move upAction

    Moves the selected pane up, on top of the others.

  • Move downAction

    Moves the selected pane down in the stacking order.

  • Pane nameTool

    Selects a pane from the list and renames it by typing in its name.

Selected pane 9

  • FillStyle

    Fills the cell, trimming the window to the cell's shape.

  • FitStyle

    Shows the whole window inside the cell, with bars where the shapes differ.

  • StretchStyle

    Stretches the window to the cell's shape using separate width and height scale.

  • ZoomTool

    Zooms the pane from 25 to 400 percent; double-click resets to 100.

  • RotationTool

    Rotates the pane from -180 to 180 degrees; double-click resets to 0.

  • HorizontalEffect

    Mirrors the pane left to right for the whole sequence with Horizontal Flip.

  • VerticalEffect

    Mirrors the pane top to bottom for the whole sequence with Vertical Flip.

  • Window %Tool

    Types exact left, top, width and height percentages of the pane's source window.

  • Cell %Tool

    Types exact left, top, width and height percentages of the pane's cell in the new frame.

More in mouzsplit

Seven layout templates and four frame shapes, all listed. Only the bottom copy keeps its sound; the source sequence is left untouched. Keyboard: Enter builds, [ and ] step keys, K adds a key.

All panels in the feature library · The workspace · Price