Special screens and display modes (LED wall)

A screen's spec tells speakers what content the stage screen takes. A screen is either the presentation screen (e.g. a stage-wide LED wall where presentations are shown) or an extra screen next to it.

Presentation screen and display modes

When a screen has display modes, every speaker's page asks How should your presentation be shown? with a picture of each. The recommended mode is selected and is the session's default if the speaker doesn't choose. For example, an LED wall of 4032 × 1152:

• Two 16:9 pictures side by side (recommended): the speaker's PowerPoint or PDF is shown as two identical pictures, 2000 × 1125 px each.
• The whole screen in a special format: the speaker makes images or videos for the whole screen (4032 × 1152). They are checked against the spec and are enough: the presentation counts as delivered, and a PowerPoint or PDF is an optional backup.
• One 16:9 picture in the middle: the presentation as one picture of 2000 × 1125 px, with empty sides.

The technical team sees the choice in the manifest's Näyttötapa column, the partner's view and the run sheet (e.g. 2 × 16:9 (oletus) or Koko screen 7:2). The organiser can change it on the session page. An event can have one presentation screen.

Extra screen

A screen without display modes is an extra screen: every speaker's upload page gets an optional card for its images and videos, next to the presentation.

Adding a screen

1. Organiser: Asetukset → Erikoisscreenit → Lisää screen. Technical partner: Screenien speksit in your own view. Both see and can edit the same screens.
2. Give a name (shown to speakers and at the end of file names) and the size in pixels. The aspect ratio is worked out from it, e.g. 4032 × 1152 is 7:2. The physical size is optional information for speakers.
3. For a presentation screen, add the display modes: Presentation (how many pictures side by side and one picture's size, e.g. 2 × 2000 × 1125) or Whole screen with special content, and pick the recommended one. The speakers' texts and pictures of the modes are made from these, in Finnish and English.
4. Choose the accepted image formats (PNG, JPEG) and frame rates. No frame rate means any.
5. Rank the video formats: 1 is the best, and the same number means equally good (e.g. DXV3 = 1, HAP and HAP Q = 2, ProRes 422 HQ = 3, H.264 and H.265 = 4). Formats without a number are not accepted.
6. Choose the formats a video with transparency may come in (e.g. DXV3 Alpha, HAP Alpha, ProRes 4444).
7. Add instructions for speakers if needed and check the largest file size. Uncompressed video grows fast, so the default is 10 GB per file.

Start from the example fills in an LED wall's spec (4032 × 1152, three display modes, PNG, 50 or 25 fps, DXV3 › HAP / HAP Q › ProRes 422 HQ › H.264 / H.265).

What is checked

• Picture size: pixels against the screen's. With a different shape the speaker learns that the picture will be stretched or leave empty edges.
• Video format: read from the video file's headers (e.g. DXV3, HAP, HAP Q, ProRes 422 HQ / 4444, H.264, H.265). A format that isn't listed gets a warning.
• Frame rate and transparency: a transparent video gets a warning if its format doesn't keep the transparency.
• All of these are warnings: the file is accepted and delivered, and the technical team decides what it can show. Only a wrong file type or a broken file blocks the upload.

Where the files go

A session's screen content has versions of its own: a new presentation doesn't ask for the screen content again, nor the other way round. The files go to the day folder next to the presentation, with the screen's name at the end, e.g. 2026-11-18_1400_Virtanen_v1_LED-seinä.mov (several files: …_LED-seinä1.mov, …_LED-seinä2.png). Older versions move to _vanhat as presentations do.

• In the manifest the screen content is a row of its own under the session (→ LED wall in the session column).
• In the partner's view it shows under the session and can be marked as loaded on the screen's computer.
• In the run sheet the screen's state and file show under the presentation row.
• The organiser can upload content on a speaker's behalf on the session page, also for a screen that isn't shown to speakers.

Large files

• The limit is the screen's setting (10 GB per file by default, at most 20 GB), and one version holds at most 50 GB.
• The speaker's card shows, for the screen's size and frame rate, how much a minute takes in each accepted video format, with advice: short loops, H.264/H.265 at a high bitrate for long videos (when they are listed), uploading early, and the fallback.
• For big uploads the speaker sees an estimated upload time before the upload and the time left during it. The computer stays awake while the page is visible, and an interrupted upload continues with the same files.
• Fallback: if a file is too big or the upload doesn't work, the speaker replies to the invitation email with a download link (e.g. WeTransfer). Upload the file on the session page on their behalf: it is checked, named and delivered to Drive as usual.
• The technical team should fetch big files as soon as they arrive: the partner's view shows the new files.

Removing a screen hides it from speakers and moves the files already delivered for it from the day folders to _vanhat.