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// Test DCP

DCI alignment pattern

Geometry, convergence, sharpness and colour channels in one chart, with Flat, Scope, F-200 and F-220 framing lines. Full container, 20 s @ 24 fps.

DCI alignment pattern
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Projector
Cinema server
Files and SHA-256
  • 2K · XctechDCIAlign_2K_Full_SMPTE_OV.zip · 469 MBSHA-256 b5b86b33429d7c4bed634275f7238823d99c1ab26eb63e879bef67009bf4fcbe
  • 4K · XctechDCIAlign_4K_Full_SMPTE_OV.zip · 446 MBSHA-256 8d7771a1a48c7de7d4500ad573faae79f2bcaec58b6797262318f62457edb87b

What the package contains

Format frames
Scope 2.39 (2048 × 858), Flat 1.85 (1998 × 1080), F-200 (1998 × 1000), F-220 (1998 × 908), Full 1.90 (2048 × 1080), 16:9 (1920 × 1080) and 4:3 (1436 × 1080), each labelled; doubled in 4K except F-200, which is 3996 × 1998. For masking and preset checks.
Masking arrows
On the picture edges for Flat, Scope, F-200 and F-220: where the masking should land and where the preset picture ends.
Grid and centre
A 1 px grid across the whole picture, a centre cross with a circle and R, G, B lines: geometry, cropping and convergence.
Focus and convergence at the edges
Targets in the corners and on the edges, because defocus and channel misregistration show first at the edges of the chip.
Colour fields
R, G, B, W and C, M, Y, K: a functional check that every channel lights and white is neutral. The chart is not colorimetric and does not measure colour.
Grey scale
A stepped scale and a continuous ramp: gamma and visible banding.
Resolution
1 px, 2 px and 4 px checkerboards (Nyquist): tell native 2K or 4K from scaling; in the 4K package the 1 px lines really are 1 px.
On-chart labels
Resolution, container, active area and 24 fps inside the picture; the text doubles as a focus aid.

How to use the test

  1. 1

    Download the version that matches the native resolution of the projector: 2K for a 2K projector, 4K for a 4K one.

  2. 2

    Ingest the package into the cinema server and play it. The chart is in the Full container, so it lights the whole projector chip.

  3. 3

    Geometry and masking: the edge of the preset picture should sit exactly on the Flat (1998 × 1080) or Scope (2048 × 858) frame. The arrows on the edges show where the masking should land.

  4. 4

    Focus and convergence: check the targets in the corners and on the edges and the 1 px grid. Defocus and channel misregistration show first at the edges of the chip.

  5. 5

    Resolution: the 1 px checkerboard must be sharp. If it blurs, the projector is scaling the picture.

  6. 6

    Colour: the R, G, B, W and C, M, Y, K fields are a functional check that every channel lights and white is neutral. The chart does not measure colour.

Technical parameters

Container
Full 1.90:1 · 2K 2048 × 1080 · 4K 4096 × 2160
Duration
20 s at 24 fps (480 frames), still frame
Bit rate
200 Mbit/s
Audio
silent track in MXF
Authored with
DCP-o-matic 2.18 from a native-resolution master
Standard
SMPTE DCP, unencrypted (no KDM), content kind TST
Picture
JPEG 2000 in MXF, X'Y'Z' 12 bit, gamma 2.6 (SMPTE ST 428-1)
Package
ASSETMAP, CPL, PKL, VOLINDEX and MXF in a folder ending in _SMPTE_OV, zipped

Versions

  • v2.0 (2026-09-11)
    • F-200 (1998 × 1000) and F-220 (1998 × 908) DCNC framing lines, 3996 × 1998 and 3996 × 1816 in 4K.
    • Masking arrows on the edges and a legend row for every format.
    • 4K: convergence lines are exactly 1 px.
  • v1.0 (2026-06-26)
    • First public release: 2K and 4K Full container, Flat and Scope frames, convergence, focus, channels.

All releases: GitHub Releases · Free for projector alignment, commercial use included, under the licence CC BY-ND 4.0

Frequently asked questions

Where on the chart do I check focus and convergence?

On the targets in the corners and on the edges and on the 1 px grid across the picture. Defocus and R, G, B misregistration show first at the edges of the chip, which is why the targets sit there. The centre cross with a circle and R, G, B lines shows convergence in the middle.

How do I tell that the projector is scaling the picture?

From the 1 px, 2 px and 4 px checkerboards. In native display even the 1 px checkerboard is sharp; when the projector scales the picture, the finest pattern blurs. So play the 2K version on a 2K projector and the 4K version on a 4K one.

Can I measure colour or brightness with the chart?

No. The R, G, B, W and C, M, Y, K fields are a functional check that every channel lights and white is neutral. The chart is not colorimetric; calibrating colour and brightness needs a measuring instrument.

More test DCPs

Framing F-190 / F-210→F-190 and F-210 framing lines with masking arrows and pixel offsets, plus Flat, Scope and 16:9 for reference. Full container, 20 s @ 24 fps.Audio channel test - 7.1→The 7.1 channels play one after another: first the channel name is spoken, then six seconds of pink noise. Checks the wiring of all eight channels, rear ones included. Flat container, 1:12.Audio/video sync test→Shows whether the sound in the auditorium runs ahead of or behind the picture, and by how many milliseconds. Countdown, offset finder from -100 to +100 ms, clapperboard scene and an L, C, R and LFE channel check. Flat container, 1:03.

All test DCPs→

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