CampaignReel

Ad placement specs against what generators output

Who decides where the cuts go in a minute of picture

One page returns up to two minutes inside a single request, in six second increments. The other returns five to fifteen continuous seconds per call. A minute is one job on the first and four on the second, and the difference is who chooses where the cuts fall. As of 2026-09-22.

Who places the cuts in a minuteOne row returns two minutes already cut into six second beats. The other returns four continuous pieces and leaves the joins to an editor.One requestTwo minutesCut by the modelNo seams to reconcileFour requestsFifteen seconds eachCut by the editorThree seams to matchThe tradeControl of the beatGiven up, or keptInvisible in the figureBoth rows fill sixty secondsWhat each arrangement costs
Fig. 1 Fewer seams and less control arrive together, and the length column shows neither.
What a sixty second piece is on each row. Recorded 2026-09-22.
What the pages stateAmazon Nova ReelRunway
Requests neededOneFour
Where the cuts fallInside the request, chosen by the modelAt the joins, chosen by an editor
Grain of the lengthSix second incrementsAny whole second from five to fifteen

Inclusion rule. Published length figures only, with the request count worked out by division. No claim is made about how either set of cuts looks. Order. The count first, then what it implies about control.

1Fewer joins is not automatically better

Four requests means three seams to reconcile and three chances for a face or a key light to drift. One request means none of that work exists. For a schedule, the first row plainly wins.

For an advertisement with a fixed beat at the end, it can lose. The cuts inside that one request were placed by the model, so the last six seconds are wherever the model decided they start, and a brief that needs a product shot to land on a particular word has no handle on it.

2The grain matters more than the ceiling

Six second increments mean a slot has to be expressed in sixes. A thirty second window is five beats exactly; a five to six second bumper is one beat and nothing is wasted. An eight second idea has no legal value at all.

On the other row any whole value from five to fifteen is available, so the beat is written first. The cost is that the fifteen second ceiling puts four seams into a minute, and the vendor charges per second of output on top.

3What a plan should read first on each row

On the increment row, read the model identifier condition: anything past the first six seconds requires a particular model ID, and a request against the wrong one comes back short with nothing that mentions versions.

On the continuous row, read the billing basis. Length is charged per second, so iterating at the top of the range costs three times iterating at the bottom, and the cheap order of work is to settle framing short and raise the length once.

4The rest of the column behind these two

Duration across the registerAmazon Nova Reel is marked; Runway sits at five to fifteen seconds, continuous, on Gen-4.5 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 Amazon Nova Reel is marked; Runway sits at five to fifteen seconds, continuous, on Gen-4.5 in the same column. Recorded 2026-09-22.
Every generator in the register on the duration column, with Amazon Nova Reel 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. Both rows can fill a minute. One takes the joining work away and takes the placement of the cuts with it; the other leaves both with the editor. That trade is invisible in the length column and decides how the job is scheduled.

5Sources

Read from the Amazon Nova user guide and the Runway API input reference, both checked 2026-09-22. The column is described on duration, and each entry has its own cell page at Amazon Nova Reel and Runway, and the rule that keeps surfaces and generators apart is on method. Nearby pairs: CogVideoX and Kling AI, HeyGen and Veo.