How to Watch Stereo 3D: A Format Guide for Every Device

You have a side-by-side stereo file. It looks like two slightly different copies of the same frame, squished together horizontally. Play it on a normal screen and it looks wrong. Play it on the right device with the right settings and the depth is real. The difference is format selection and player configuration.

Side-by-side (SBS) is the most universal stereo format

SBS stores the left and right eye views next to each other in a single frame. Full SBS uses the full resolution for each eye — a 1920×1080 source becomes 3840×1080. Half SBS (HSBS) squishes each eye to half width — a 1920×1080 source stays 1920×1080 but each eye gets 960 pixels of width. Most consumer devices and players support HSBS. Professional workflows prefer full SBS for maximum quality per eye.

Top-bottom (TB) is the vertical equivalent. The left eye is on top, the right eye on the bottom. Some 3D TVs prefer this format. The same full vs. half distinction applies.

Viewing on a Meta Quest (2, 3, Pro)

The Quest's built-in media player supports SBS and TB natively. Transfer your file to the headset via USB or stream it. In the player, select the 3D mode: "3D Side-by-Side" for SBS files, "3D Top-Bottom" for TB files. If the depth looks inverted (objects that should be near appear far), swap eyes — most players have a "Swap Left/Right" option.

For higher quality playback, use Skybox VR Player (free on the Quest store). It auto-detects SBS format from filename conventions — naming your file with "_SBS" or "_3D-SBS" in the filename triggers automatic 3D mode. Skybox also supports streaming from a local network drive, which avoids the storage limit on the headset itself.

DeoVR is another strong option, particularly for streaming from NAS or cloud storage.

Viewing on Apple Vision Pro

The Vision Pro supports spatial video in MV-HEVC format (multiview HEVC). Standard SBS MP4 files are not natively supported by the Photos app. To view SBS content on Vision Pro, use a third-party player like Sora Video Player or convert the SBS file to MV-HEVC using a tool like Spatial Media Toolkit. The conversion preserves the stereo information while wrapping it in the format Apple expects.

Viewing on a 3D TV or monitor

Most 3D TVs from the 2010-2017 era support SBS and TB via their built-in 3D mode. The TV detects the format (or you select it manually) and alternates left/right frames to the active shutter glasses. If your TV says "3D" in its settings menu, it almost certainly supports HSBS input.

For passive 3D displays (like LG's Cinema 3D line), the TV interleaves rows for each eye. HSBS input works — the TV handles the conversion to row-interleaved internally.

Anaglyph (red/cyan glasses)

Anaglyph is the lowest-barrier stereo format — it works on any screen with any red/cyan glasses. anelo can output anaglyph directly using Dubois color matrices that minimize ghosting and color distortion. The trade-off is color accuracy: anaglyph inherently sacrifices color information to encode depth in the color channels. It is best for previewing stereo effect and for content where color fidelity is secondary (black-and-white films, technical visualization).

Which format should you choose?

If you are targeting VR headsets: full SBS at the headset's native resolution (1832×1920 per eye for Quest 3). If you are targeting a 3D TV: HSBS at 1080p. If you need a quick preview on any screen: anaglyph. If you are archiving for future use: full SBS at the highest resolution available — it is the most future-proof format because it can be converted to any other format without quality loss.