How do you make code and slides readable in vertical video?
Don't crop the slide; redraw it. Rebuild the code, diagram or quote as a vertical layout with large type, show only the lines the speaker is talking about, and reveal them as they're mentioned. Keep the original's colors and fonts, and hold any text on screen for at least 1.5 seconds plus about 0.3 seconds per word.
Why cropping fails
A 16:9 slide in a 9:16 frame keeps about a third of its width. Code lines are cut mid-token, diagrams lose half their boxes, and text small enough to fit a projector is unreadable on a phone. Zooming in makes it bigger but cuts even more.
What to do instead
- Pull out what the speaker is actually pointing at: the three lines of code, the two boxes of the diagram, the one quote.
- Lay it out for a tall frame: wrap long lines, stack diagram boxes vertically, and use type large enough to read at arm's length.
- Match the speaker's deck: same background, syntax colors, fonts and icons, so the clip still feels like their talk.
- Build it up as they talk: reveal each line or box when it's mentioned, one thing to read at a time.
- Check every word on screen against the recording. A redrawn slide with a typo in the code is worse than none.
Where Video Tap fits
Video Tap redraws code, diagrams, articles and quote slides this way automatically, in the speaker's own look, and checks every on-screen word against what was said. Anything it can't confirm becomes a question for your engineer instead of a guess.
Questions
- Can't I just show the speaker and skip the slide?
- For an opinion or a story, yes. For a technical point, the slide usually is the point; without it the clip says less.
- What about square video?
- Square (1:1) and portrait (4:5) leave more room, but the same rules apply: show less, bigger, and build it up.
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Updated 2026-10-28