StereoPresenter Help

Overview

StereoPresenter is a macOS app for presenting 3D stereo content — videos and still images — on external monitors or projectors. It supports a wide range of 3D formats including Side-by-Side, Top/Bottom, Spatial Video, Anaglyph, Interlaced, and more, along with BGM playback and crossfade transitions.

Getting Started

1. Load media

Click 📂 File to open files or 📁 Folder to load a folder. You can also drag & drop files or folders onto the main window or control panel.

2. Choose Input Format

Select the format matching your source from the Input: dropdown. Changing the format while playing reloads the current file immediately.

3. Choose Output Format

Select the output format from the Output: dropdown to match your 3D display device or projector.

4. Start Projection

Press Enter or click ⬛ Start [Enter] to project to the external monitor.

Input Formats

Full SBS

Full-width Side-by-Side (L|R in full frame)

Half SBS

Half-width Side-by-Side (squeezed)

Full T/B

Full-height Top/Bottom (Top=L, Bottom=R)

Half T/B

Half-height Top/Bottom (squeezed)

Separate L/R

Two files: sorted order, odd=Left, even=Right

Spatial Video/Photo

Apple MV-HEVC Spatial Video or Spatial HEIC Photo

MPO Photo

Multi-Picture Object (Fujifilm W1/W3, etc.)

Tip: Panasonic 3D1 camera files (.MTS / .M2TS) are supported and treated as Half SBS video.

Output Formats

Full Width SBS

Full-width Side-by-Side output

Half Width SBS

Half-width SBS for passive 3D TVs

Half Height T/B

Half-height Top/Bottom output

Dual Projector

Two monitors, one eye each

Anaglyph Gray

Red-Cyan anaglyph in grayscale

Anaglyph Color

Red-Cyan anaglyph in color

Interlaced

Row-interleaved for polarized 3D monitors

Interlaced output: Rendered dot-by-dot at the exact display resolution. Even lines → left eye, odd lines → right eye. A bilinear 2-row average is applied per eye to minimize jagged artifacts when viewed through polarized glasses.

Keyboard Shortcuts

Key	Action
`Enter`	Toggle projection on / off
`Space`	Next file
`Backspace`	Previous file
`←` / `→`	Horizontal shift (3D convergence adjustment)
`↑` / `↓`	Vertical shift adjustment
`⌘`+`←` / `→`	Floating Window (FW) adjustment
`⌘R`	Reset all adjustments to zero
`X`	Swap Left / Right eyes (toggles L↔R button)
`M`	Toggle Full ↔ Half for SBS or T/B input formats
`B`	Toggle black screen on the main display (projection continues)
`C`	Show / Hide the control panel
`Q`	Quit the application

M key: Only works when input format is Full SBS, Half SBS, Full T/B, or Half T/B.

Control Panel

§ File & Seek

Displays a thumbnail of the current file, file name, timecode, and a seekbar. Drag the seekbar during playback for real-time scrubbing.

Buttons: 📂 File — open files | 📁 Folder — open a folder

🎵 BGM: Click Select… to choose a background music file. Use ▶ to play and ⏹ to stop. The BGM Vol: slider controls BGM volume independently from video audio. BGM loops continuously. The selected file and volume are saved and restored on next launch.

Auto Ducking:If you check this box, the audio from the video will take priority, and the volume of the BGM will be lowered.

§ Playback

⏮ Jump to first file | ◀ PREV / NEXT ▶ Navigate playlist | ⏪ -10s / ⏩ +10s Seek ±10 seconds | ▶ / ⏸ / ⏹ Play / Pause / Stop

Repeat: In Manual mode with Repeat ON, the current video loops. In Auto mode, the full playlist loops regardless of the Repeat setting.

Speed: 0.5× / 1× / 2× / 3× / 5× / 10×

🔊 Volume controls video audio. Independent of BGM volume.

§ Presentation

Auto / Manual: Auto advances to the next item automatically. Manual requires a button or key press.

Still (sec): How long each still image is shown in Auto mode. Options: 3 / 4 / 5 / 7 / 10 / 15 seconds.

Crossfade: Smooth fade transition when switching between items. Selectable duration: 0.5 / 1.0 / 2.0 / 3.0 seconds. The current frame is captured via Metal GPU rendering — no screen recording permission required.

Auto Alignment(Photo): If you check this box, the left and right images will be automatically aligned and displayed (does not apply to videos).

§ 3D Format

Select Input and Output formats. Changing input format reloads the current file immediately with the new setting.

L↔R OFF/ON: Swaps left and right eye sources. Same effect as pressing X.

§ Monitor & Adjust

⚙ Monitor: Configure projection target. Supports Main Only, Single External, or Dual External (two monitors, one eye each).

Position / FW: Shows X / Y / FW values. Arrow keys adjust; ⌘+arrows for FW; ⌘R or Reset button clears all.

WEB HELP: Opens this help page in your browser.

Repeat Behavior

Mode	Repeat OFF	Repeat ON
Auto	Stops after last file	Loops entire playlist from beginning
Manual — Video	Stops at end of video	Loops the same video repeatedly
Manual — Image	Stays on current image	Stays on current image (advance manually)

Drag & Drop

Drop one or more files onto the main window or control panel to load as a playlist.
Drop a folder to load all supported media files inside it.
When files and a folder are dropped together, the folder takes priority.

Supported File Formats

Type	Extensions
Video	mp4, mov, m4v, avi, mkv, hevc, mts, m2ts
Image	jpg, jpeg, png, heic, bmp, tiff, tif
Spatial Video / Photo	mov (MV-HEVC), heic (Spatial)
MPO	mpo
Audio (BGM)	mp3, m4a, aac, wav, aiff, flac, and other system-supported formats

🎬 StereoPresenter Help

⬇ Download StereoPresenter

Overview

Getting Started

1. Load media

2. Choose Input Format

3. Choose Output Format

4. Start Projection

Input Formats

Output Formats

Keyboard Shortcuts

Control Panel

§ File & Seek

§ Playback

§ Presentation

§ 3D Format

§ Monitor & Adjust

Repeat Behavior

Drag & Drop

Supported File Formats