Both are side-by-side 3D. The difference is resolution math — and it decides whether your 3D looks crisp or mushy.
Side-by-side 3D stores the left and right eye views next to each other in one frame. The question is always: how many pixels does each eye get?
| Half-SBS | Full-SBS | |
|---|---|---|
| Frame (1080p source) | 1920×1080 total | 3840×1080 total |
| Per-eye resolution | 960×1080 (squeezed) | 1920×1080 (full) |
| Quality on headset | Softer, visible horizontal stretch | Native sharp |
| File size / bandwidth | Small — good for streaming | ~2× bigger |
| Typical source | TV broadcasts, streaming services | Conversions, local players, VR |
Converting photos or videos for a headset: always Full-SBS. Headsets have plenty of pixels (Quest 3 ≈ 2064×2208 per eye) — there's no reason to throw half of them away.
Replaying old broadcast recordings: they're Half-SBS at the source; players unsqueeze them automatically. Nothing to do.
DepthSnap — free browser-based 2D to 3D SBS converter. No upload, no signup.