CampaignReel

Ad placement specs against what generators output

HeyGen publishes thirty minutes, then fifty of them

The usage limits page states thirty minutes per scene with fifty scenes per video. It is the largest length figure in this register, and it is stated twice: once for a unit of output and once for how many of those units one job holds. As of 2026-09-22.

Two ceilings, nested inside each otherThirty minutes governs one continuous setup and fifty scenes governs how many setups a single job carries. The page never multiplies the two figures together.What the usage limits page statesPer scene: 30 minutesOne uninterrupted stretch of the same setupPer video: 50 scenesHow many stretches one job assemblesProduct of the twoNot stated anywhere on the page, so not recordedWhat this register declines to compute
Fig. 1 The second ceiling is the one that matters: it says the joining happens inside the product.
What each page puts in writingFilled where the page states something in that column, hollow where it does not address it.What each page puts in writingValueWhat the unit isPer scenePer scene — Value: 30 minutesPer scene — What the unit is: One continuous stretch of the same setupPer videoPer video — Value: 50 scenesPer video — What the unit is: How many stretches one job carriesImplied job lengthImplied job length — Value: Not stated as a single numberImplied job length — What the unit is: The page never multiplies them
Fig. 2 Filled where the page states something in that column, hollow where it does not address it.
The two ceilings, and what a scene is in this reading. Recorded 2026-09-22.
CeilingValueWhat the unit is
Per scene30 minutesOne continuous stretch of the same setup
Per video50 scenesHow many stretches one job carries
Implied job lengthNot stated as a single numberThe page never multiplies them

Inclusion rule. Ceilings this usage limits page states about output length. The implied product is shown as not stated because the page does not perform the multiplication itself. Order. Inner unit first, then the container, then what the page declines to state.

1Two ceilings answer two different questions

A per-scene figure answers how long one uninterrupted stretch can run. A per-video figure answers how many such stretches a single job assembles. Every other row in this column answers only the first, and leaves assembly to whatever edits the pieces afterwards.

That second ceiling is the useful one for advertising, because it says the joining step happens inside the product. A piece made of four setups is one job here, and the seams are the vendor's problem rather than an editor's.

2The register does not multiply the two

Fifty scenes of thirty minutes is a figure the page never prints, and printing it here would be publishing an inference as a vendor statement. The sheets record what a page says, so the product stays in the table as not stated.

The restraint has a practical point as well. Ceilings published separately usually interact with quotas, storage or processing time that the same page governs elsewhere, and a multiplied figure invites a plan that no single sentence on the page supports.

3What the scale means against a sixty second slot

Thirty minutes against sixty seconds is a ratio of thirty to one. Nothing in the format binds, and the interesting question moves entirely off this column: whether a presenter speaking to camera is the right form for the placement, and what the picture has to do for the fifty-five seconds after the message has landed.

The register notes that the same page publishes output dimensions as a range from 128 to 4,096 pixels a side rather than as tiers. A row this permissive on length is equally permissive on size, and both figures describe a tool built for a brief that is not an advertisement.

4Where this cell sits in the column

Duration, generator by generatorWhat each generator prints as a length, HeyGen marked. Nothing on this axis comes from a surface. Recorded 2026-09-22.Duration, generator by generatorDurationAmazon Nova Reel — Duration: 6 s increments, up to two minutesAmazon Nova ReelCogVideoX — Duration: 6 s, at 49 framesCogVideoXGoogle Veo — Duration: 4, 6 or 8 sGoogle VeoGrok Imagine — Duration: 1 to 15 sGrok ImagineHedra — Duration: 10 minutesHedraHeyGen — Duration: 30 minutes per sceneHeyGenKling AI — Duration: Not statedKling AILTX-Video — Duration: Frames, never secondsLTX-VideoMiniMax — Duration: 4 to 15 sMiniMaxPika — Duration: 5 s and 10 s, 20-25 s on PikaframesPikaPixVerse — Duration: 1 to 15 s on version 6PixVerseRunway — Duration: 5 to 15 s on Gen-4.5RunwaySceneMixer — Duration: Thirty seconds on the Wan tiers, fifteen on H3SceneMixerVidu — Duration: Not statedViduWan 3.0 — Duration: 2 to 30 sWan 3.0
Fig. 3 What each generator prints as a length, HeyGen marked. Nothing on this axis comes from a surface. Recorded 2026-09-22.
Every generator in the register on the duration column, with HeyGen marked. Recorded 2026-09-22.
GeneratorDuration
Amazon Nova Reel6 s increments, up to two minutes
CogVideoX6 s, at 49 frames
Google Veo4, 6 or 8 s
Grok Imagine1 to 15 s
Hedra10 minutes
HeyGen30 minutes per scene
Kling AINot stated
LTX-VideoFrames, never seconds
MiniMax4 to 15 s
Pika5 s and 10 s, 20-25 s on Pikaframes
PixVerse1 to 15 s on version 6
Runway5 to 15 s on Gen-4.5
SceneMixerThirty seconds on the Wan tiers, fifteen on H3
ViduNot stated
Wan 3.02 to 30 s

Inclusion rule. Every generator with a row in this register, carrying whatever its own page states as a length. A page that states none keeps its row and says so. Order. Alphabetical by generator name.

5Sources

Read from the HeyGen usage limits page, checked 2026-09-22. The column itself is described on duration, and the rule that keeps surfaces and generators apart is on method. Next along this column: Kling AI, LTX-Video.