3D Blu-ray, in real 3D
Both eyes at full resolution, from an ISO, a disc folder or an MKV, with subtitles at the depth the disc gives them - on Windows, Linux and Mac, out to whatever 3D screen you have.
Start here
A 3D Blu-ray does not store two side-by-side pictures. It stores one eye as an ordinary H.264 film and the other as a second stream built on top of it, a format called MVC. Most players read only the first stream: the film plays, but flat, and nothing tells you the second eye was there all along.
Oku3D decodes both. The format menu shows MVC, both eyes come out at full resolution, and the depth AI stays off - this is the 3D the film was shot or mastered in, not an estimate.
Nothing to install
No codec pack, no plugin, no separate MVC decoder - and no mounting a disc image first.
One player for all of it
The same player that opens your 3D discs also shows side-by-side films, spatial video and VR180 - and converts flat films to 3D.
The MVC decoder is checked against the official MVC test streams of the standard and spreads its work across all processor cores, so a 3D film plays smoothly on ordinary hardware.
What opens in 3D
| Source | How |
|---|---|
| Disc image (ISO) | Opens like any other file - no mounting, no extra drive letter. |
| Disc folder (BDMV) | Open the folder, or the drive of an unencrypted disc, with Open Folder. |
| MKV / MK3D | Any MKV that keeps the MVC 3D track plays in 3D, not just its first eye. |
| M2TS / MTS / TS | Streams that carry the MVC track, from a disc or a 3D camcorder. |
| SSIF | The single file where a 3D Blu-ray keeps its second eye. |
| Camcorder MP4 | The MVC MP4 that 3D camcorders such as JVC's write, and AVCHD 3D recordings. |
A disc image or folder copy that lacks the disc's .ssif files still plays in 3D. Ordinary 2D Blu-rays play too, and can be converted to 3D by the depth AI like any other film. Unencrypted discs only: commercial discs are AACS-encrypted, Oku3D ships no decryption keys, and such a disc shows a notice instead of playing.
Playing a disc
- The main film starts by itself. Oku3D picks the main feature rather than the first trailer or menu loop.
- Titles, audio and subtitles are listed in the top bar - a boxset's episodes, bonus features, every language on the disc.
- Timeline previews: hover the timeline to see a thumbnail of that moment, on disc images and folders too.
- If the depth looks inside-out, flip Eye Order in the view menu; if the 3D is too strong for your screen, the Convergence slider moves the whole picture nearer or farther.
Subtitles at the right depth
On a 3D Blu-ray every subtitle line has a depth of its own, so it floats in front of whatever is behind it instead of cutting through a face that comes out of the screen. Oku3D reads that depth from the disc and keeps it exactly - in a VR headset too.
- Wrong plane: if a disc puts the subtitles at an odd depth, pick another under Depth plane in Settings > Subtitles.
- A copy that lost the depth: an OFS 3D-Plane file beside the video or attached to the MKV gives it back.
- Size and position sliders apply to disc subtitles as to any other.
Which 3D screen
Pick the output under Settings > Display > Output Format. The film itself stays the same; only the way the two eyes reach the screen changes.
| Screen | What you get |
|---|---|
| 3D TV or projector | Frame Packing: each eye at full resolution over HDMI, the signal a 3D Blu-ray player sends. Going fullscreen switches the display into 3D. Setup |
| Glasses-free 3D monitor | Leia SR displays such as the Samsung Odyssey 3D, in a window or fullscreen. Output formats |
| VR headset | A cinema screen in any OpenXR headset, subtitles at their depth included. VR headset |
| Video glasses | XREAL and similar glasses in their side-by-side 3D mode, at full resolution per eye. Output formats |
| Passive 3D TV or monitor | Row-interleaved output for polarized glasses, column and checkerboard too. Output formats |
| Colored glasses | Anaglyph in 15 modes for red-cyan, green-magenta and amber-blue glasses. Output formats |
| No 3D screen at all | Mono shows one eye as an ordinary 2D film, so the same file works on any monitor. Output formats |
Not every output exists on every system - the Linux and Mac pages say which ones differ.
Sound
Blu-ray soundtracks play as they are on the disc - Dolby Digital, Dolby TrueHD, DTS and DTS-HD - with every audio track listed in the top bar. On Windows, Bitstream passthrough in Settings > Audio sends Dolby and DTS untouched to an AV receiver, Atmos included.
Watch your 3D films in 3D again.
Free, offline, no account. Windows, Linux and Mac, on any GPU brand.