How to make a short that must not exceed a hard time limit

Last updated 2026-08-17 · 6 min read

What is the short version?

Platform limits are absolute in a way most creative constraints are not: fifty-nine seconds means fifty-nine seconds. A script that runs a few seconds long has to be shortened, cut or sped up, and only one of those three options leaves your argument fully intact.

1. Go to Vizard Agent and paste the script.
2. State the hard limit and the target range you want to land in.
3. Say the register and whether it should match an earlier video.

What do you need before you start?

The script and the ceiling. Vizard Agent treats a stated limit as a constraint to be measured against rather than a target to aim near, so writing it out as a hard rule is what makes the difference between a video that fits and one that nearly does.

• The script, as written. Vizard Agent reads it rather than rewriting it unless you ask.
• The hard limit. "Must not exceed fifty-nine seconds; target fifty-four to fifty-eight."
• What not to add. Say explicitly if no introduction or outro should be added to fill time.
• The register. Documentary and authoritative is the convention for this format.
• Your earlier videos. In the same project, so the look and the voice carry across a series.

What do you type into Vizard Agent?

Write the constraint as a rule, in capitals if you like. Vizard Agent holds a stated hard limit and will change the read rather than your script to meet it, which is exactly the behaviour you want when the words are the part you actually care about.

Prompt

Variants worth knowing:

• Let it trim instead. Say "cut lines rather than speed the read" if pace matters more than completeness.
• Match the series. Keep the earlier videos in the project and Vizard Agent studies their look.
• Diagrams and cards. This format usually needs motion graphics rather than footage.

What does Vizard Agent actually do?

Here is the order Vizard Agent worked in on a real hard-limit short. The interesting moment is in the middle: the narration came back too long, and rather than cutting your words it changed the delivery and re-derived every timing from it.

1. Loads the motion playbook and the graphics, voice, music and font tools.
2. Extracts frames from the previous video in the series and studies eight of them in detail.
3. Searches for a mature documentary narrator and generates a short test line.
4. Samples three stronger voices and downloads two subtle music beds.
5. Measures every sample and bed, then listens through them before choosing.
6. Generates the full narration in the chosen voice.
7. Times the read and takes a word-level transcript.
8. Speeds the narration by ten per cent to fit inside the ceiling.
9. Prints every word with its rescaled timestamp, then renders the opening and the motion cards against those numbers.

Step 9 is the part that is easy to get wrong. Speeding a narration invalidates every timing you had; Vizard Agent re-derived the whole word map at the new speed so the graphics still land on the words rather than a fraction late.

What does the result look like?

From the run this page is written from, probed on the delivered file: 1080x1920, H.264, 30fps, 58.0 seconds, AAC audio. Vertical, fifty-eight seconds — inside the ceiling and inside the target range — narrated over motion graphics matched to the series it belongs to.

Vizard Agent measured the delivered duration rather than assuming the render matched the plan, which is the only way a hard limit is actually a limit.

Vizard Agent keeps both the original and the rescaled word maps after delivery, so a later decision to slow the read back down and cut a line instead works from measurements that already exist rather than a fresh recording.

This category was not separately measured, so treat the timing as a range rather than a promise: comparable work runs a median of 28 to 38 minutes end to end. Across all projects the median cost by tier is Flash 47, Pro 55, Max 242, Ultra 263 credits.

When does this not work well?

A hard limit is a real constraint, and something always gives to meet it. Vizard Agent will get inside the ceiling, and it is worth deciding in advance whether you would rather lose words or lose pace, because those are the two currencies available.

• A ten per cent speed-up is audible. Slightly, to a careful ear. Beyond that it sounds rushed.
• A long script cannot be squeezed. If the words need seventy seconds, they need cutting rather than speeding.
• Graphics need room. A diagram held on screen for one second is decoration rather than information, however well it is drawn.
• The claims are yours. This format is used for economic and political argument, and the assertions are your responsibility.
• Ceilings differ by platform. Fifty-nine seconds is not universal; check the ceiling on the platform you are actually posting to.
• Filling to the limit is not the goal. A fifty-second short that says everything beats a fifty-eight second one that repeats itself.

How do you fix a result that came back wrong?

Say what to change. Vizard Agent keeps the script, both narration takes, the rescaled word timings and every rendered card, so a slower read or a trimmed line re-derives the timings rather than rebuilding the graphics from scratch.

• "It sounds rushed." Lines cut instead, at the original speed.
• "The diagram is too quick." That card held longer within the same limit.
• "Match the previous episode's voice." Recast against the earlier video.

How does Vizard Agent compare to doing it yourself?

By hand this is recording the script, finding you are four seconds over the limit, re-recording the whole thing faster, and then discovering that every graphic in the video is now out of position because all of the timings underneath them quietly moved.

Common questions

Will it cut my script to fit? Only if you ask. By default Vizard Agent adjusts the delivery and leaves your words intact.

How much can it speed the read? Around ten per cent is unobtrusive. Beyond that, cutting lines is the better answer.

Will the graphics still line up? Yes. Vizard Agent rescales every word timing after the speed change and builds the cards against the new numbers.

Can it match my earlier episodes? Yes. Keep them in one project and Vizard Agent studies their frames before designing anything.

Does it check the final duration? Yes. The delivered file is measured rather than assumed to match the plan.

Can it do a longer version too? Yes, at the original speed, for platforms without the same ceiling. Vizard Agent keeps both reads.

Does it add music? Yes. Vizard Agent auditions beds and mixes one under the narration at a documentary level.

Can it build diagrams? Yes. Vizard Agent renders motion cards and times them against the rescaled word map.