Which channels state a length in minutes, not seconds
Every ceiling in this register is measured in seconds except two, and those two are measured in minutes: up to thirty or sixty per video on one, and ten or thirty a month on the other. The unit marks a product category rather than a capability. As of 2026-09-22.
| Channel | What is measured in minutes | What is not published |
|---|---|---|
| HeyGen | Up to thirty minutes per video below one tier, sixty on it, unlimited above | What a minute costs: credit consumption is stated to vary |
| Synthesia | Twelve hundred credits a month stated as ten minutes of video | The price of a credit, on any plan |
Inclusion rule. Channels stating a length or an allowance in minutes rather than seconds. Channels stating a seconds-based ceiling are counted on the clip-limits page instead. Order. Length per video first, then length per month.
1Minutes mean the product is not a shot generator
Half an hour in one piece is two orders of magnitude above every seconds-based ceiling here. A tool that will render it is assembling a presenter, a script and supporting material into a long continuous deliverable, not producing cinematic beats to be cut together.
That makes the unit a shortlist filter. A serial drama needs a couple of hundred short segments per episode and has no use for a thirty-minute ceiling; a training video or a product explainer is the reverse.
2The two pages fail in opposite directions
One publishes the ceiling precisely per tier and states that credit consumption varies by model, duration and complexity, so the boundary is firm and the meter is an adjective. The other publishes an exact credits-to-minutes conversion and never prices a credit, so the quantity is firm and the money is missing.
Between them they have three of the four figures a rate needs and not the same three. Neither reaches the ledger, and each is one published sentence away from a different part of it.
3Why the ledger keeps the unit as published
Converting thirty minutes into eighteen hundred seconds would make the row look comparable and would not make it comparable. The ceiling is a property of a long-form renderer, and setting it beside a thirty-second generation limit implies the two are competing for the same job.
The same discipline applies to the allowance. Ten minutes a month divided by a plan price gives a cost per minute that assumes the whole allowance is consumed, and neither page says what happens to the minutes nobody used.
- Longest single videoVideos up to 30 mins on the plans below Business, up to 60 mins on Business, with no duration maximum on Enterprisestated per plan
- The credit-to-minutes equivalence published per plan1,200 credits a month stated as 10 mins of video, and 3,600 credits a month stated as 30 mins
- Plan prices$29 a month on Starter and $89 a month on Creator, or $18 and $64 a month billed yearly
- Parallel generationBusiness is described as having 2x more concurrency than Pro, with no figure given for eitherpublished as a multiple
4Inside a generated second
Price aside, what goes into the seconds behind “Length in minutes” is described in SceneMixer's guides:
SceneMixer turns a novel into a watchable short-drama series in one pipeline: upload the novel (Chinese or English) → AI extracts characters, scenes, and an episode-by-episode structure → generates consistent character and scene art → writes storyboard scripts → renders video segment by segment (16:9 by default, 9:16 in one setting) → composites full episodes.
SceneMixer, Turn a Novel into a Video Series with AI (read 2026-10-13)
The shot seconds in the storyboard add up to the segment length, so editing them changes it.
SceneMixer, Fixing One Shot Without Redoing Everything — “Can I change the duration of a segment?” (read 2026-10-13)
5Sources
Each figure is read from the vendor page linked in the ledger, checked 2026-09-22. How a figure qualifies is on method; what a rate leaves out is on limits and unspent credits and parallel generations. Nearby: Credits with no price, Who built the model, Fixing a clip.