CampaignReel

Ad placement specs against what generators output

The two rate cards that never mention length

Two priced pages fill the resolution column and leave the length column empty. One reaches 4K and the other stops at 1080p, and the shared silence says something about rate cards rather than about either vendor. As of 2026-09-12.

Why both silences are on rate cardsResolution steps appear on both pages because each carries a different charge. Length appears on neither, because the charge does not vary with it in a way either page needed.PricedThree resolution stepsEach has a ratePrinted on both pagesNot pricedLengthNo rate varies with itAbsent from bothConsequenceNo denominatorFor a call countBoth rows unplannableTwo pages, one shape of gapWhat a rate card prints and why
Fig. 1 The silence follows the document type rather than the product, which is only visible with both rows together.
What each priced page fills and leaves empty. Recorded 2026-09-12.
What the pages stateKling AIVidu
Resolution720p, 1080p and 4K540p, 720p and 1080p
DurationNothingNothing
Aspect ratioNothingNothing

Inclusion rule. What this register reads on each axis, against what each priced page prints. Gaps are recorded as gaps rather than filled from a demonstration or a reseller listing. Order. The filled column first, then the two empty ones.

1A rate card prints what varies with the rate

Three resolution steps appear on both pages because each carries a different charge. Duration appears on neither, which says the charge does not vary with it in a way either page needed to express.

That is reasonable for a rate card and fatal for a schedule. The one figure these sheets compute is a slot length divided by a clip ceiling, and with the denominator missing every row in the format tables for both entries reads not stated.

2Opposite ends of the ladder, same gap

One page carries 4K, a rung no other priced page in this register offers, and its floor is 720p. The other starts at 540p and stops at 1080p. A buyer reading only quality would rank them at opposite ends.

Reading both columns, neither can be planned against. A resolution with no duration beside it does not describe a deliverable, whichever end of the ladder it sits on.

3Why the rows stay in the register

Dropping them would report fifteen entries as thirteen and would hide the finding. The count of what is published is the measurement these sheets take, and two silences out of fifteen is part of the answer.

Filling them from a demonstration would be worse. A number lifted from a launch video looks identical in a table to one read off a vendor page, and the check date beside every other cell would stop meaning anything.

4The rest of the column behind these two

Duration across the registerKling AI is marked; Vidu sits at “Not stated” too in the same column. Recorded 2026-09-22.Duration across the registerDurationAmazon 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. 2 Kling AI is marked; Vidu sits at “Not stated” too in the same column. Recorded 2026-09-22.
Every generator in the register on the duration column, with Kling AI 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 this register carries, on the one column this pair disagrees about. Rows that state nothing keep their place and are marked hollow. Order. Alphabetical by generator name.

Why these two. Two of fifteen entries leave the length column empty and both are priced pages. Putting them together is the only way to show that the silence follows the document type rather than the product.

5Sources

Read from the Kling AI developer price page and the Vidu API price page, both checked 2026-09-12. The column is described on duration, and each entry has its own cell page at Kling AI and Vidu, and the rule that keeps surfaces and generators apart is on method. Nearby pairs: Pika and SceneMixer, MiniMax H3 and H3-Max.