Does the clip fit the slot

CampaignReel puts two published numbers next to each other: how long an ad placement may run, and how long a single generation can be on the tool making the creative. Where those two collide, the ad has to be assembled rather than generated. As of 2026-09-12.

Inclusion rule. Tools whose output limits were read from their own priced pages. The eleven read from documentation pages are on the output specs page. Order. Alphabetical by tool.

1The words these sheets are written in

The vocabulary section covers the placements, the spec columns and the generation mechanics, including the ones that decide whether a figure has a precondition attached: a clip ceiling, an increment, an adaptive shape. Each entry says how the property is normally published rather than what one vendor offers.

2What is recorded here

One side is placement requirements, taken from the platform that sells the placement. The other is output limits, taken from the tool vendor's own pages. They are kept apart and linked, because each is only trustworthy from its own source and mixing them is how spec sheets go quietly wrong.

The number that comes out of putting them together is deliberately simple: format length divided by the longest single generation, rounded up. It says whether a format can be made in one piece. It does not say how many attempts a usable take costs, because nobody publishes that.

3Start here

• YouTube formats — six formats, two hard length ceilings.
• Output specs — what 15 tools publish about length, resolution and shape.
• Spot specs — the generators people bring to a slot, read on what their own pages state.
• SceneMixer — 30 second generations, and a shape stated on the page carrying the price.
• Pika — duration priced as a step, 5 or 10 seconds.
• Bumper ads — the format every tool that states a length in seconds can make in one call.
• Non-skippable in-stream — 60 seconds, one call on three entries and several on every other tool that states a length.
• Method — two sources, never mixed.

4The TikTok side

• TikTok specs — TikTok publishes aspect ratios with minimum pixel sizes, a ten minute ceiling and a file size limit.
• Shape by platform — One platform names a widescreen placement, another publishes three ratios with pixel floors.
• File limits — One platform publishes a file size cap and a bitrate floor.

5Questions about the match

• Ten seconds — two formats charge at ten seconds, which fixes where the hook goes.
• Shape first — six tools publish no aspect ratio; the Masthead needs a specific one.
• Resolutions — almost every tool publishes resolution; far fewer publish shape.
• The first five — skippable gives five seconds before the viewer can leave.
• Past the ceiling — three tools reach sixty seconds in one call; the rest assemble it.

6Explainers

Craft and delivery notes for short-format advertising made with generated footage. What each platform requires and what each tool publishes are kept apart, on the placement pages and in published limits.

• One master, many cuts — composing a single generation so the placement variants are crops, not re-runs.
• Failing at upload — the handful of file properties that get an otherwise finished ad rejected.
• Writing for a skip — what the first five seconds have to do, format by format.
• Delivery checklist — the file-level checks that stop a rejection on upload day.
• Where a series goes — four routes to an audience, each with its own ceiling and its own label.
• How a series earns — revenue share, unlocks, brand work and licensing, and what each one turns on.

7Why length matters more than resolution here

Resolution is the spec everyone publishes, because it is priced. Length and shape are the specs that decide whether a piece of creative can exist at all in a given slot, and they are published far less often. A 1080p file in the wrong shape is unusable; a 720p file in the right shape runs.

For generated creative there is a second reason. Every extra generation in a piece is another join between shots that were produced independently, and continuity across joins is the thing that separates a finished ad from a sequence of clips.

That is also why this site records aspect ratio separately from resolution even though vendors usually publish only the second. Resolution is a quality decision that can be revisited; shape is a hard gate at the placement, and a file in the wrong shape has to be regenerated rather than re-encoded.

CampaignReel records published requirements and published limits. It is not a media plan and it does not say whether a platform will approve generated creative.

8What is on each sheet

Placements carry what a platform accepts; tools carry what a generator emits; the rest is how to read the two together, plus the sheets as a downloadable file.

• Data — Placement limits and generator output specs in one comma-separated file
• Axes — Duration, shape, resolution, file and frame rate…
• Placements — A sheet per placement…
• Tools — A sheet per generator…
• Pairs — Two register entries set against each other on one column
• Questions — Questions about making AI video fit an ad placement, answered from platform help pages…
• Terms — Definitions for the ad-format words used on these sheets
• Learn — Explainers on using placement specs in practice…
• Spot specs — Four pages on the generators that come up beside this register…