---
title: "TikTok Auction In-Feed Video Specs | Clean Digital"
description: "Check TikTok Auction In-Feed Video specs for dimensions, aspect ratios, file types, file size limits, duration limits, QA checks and verified official sources."
canonical: "https://cleandigital.co.uk/tools/ad-spec-library/tiktok/auction-infeed-video"
image: "https://cleandigital.co.uk/images/resources/previews/ad-spec-library-poster.png"
content_signal: "ai-train=no, search=yes, ai-input=yes"
---

# TikTok Auction In-Feed Video specs

Vertical creative is preferred for in-feed inventory.

Platform TikTok

Media type video

Campaign type Auction

Placement In-Feed

[Build a cross-platform creative brief](https://cleandigital.co.uk/tools/ad-spec-library)

## Technical requirements

Confirm these limits before final export. Where a field is not specified, check the linked platform source before trafficking the asset.

Dimensions 1080 × 1920 px

Minimum dimensions 540 × 960 px

Aspect ratio 9:16 (recommended)

File types MP4, MOV, MPEG, 3GP, AVI

Maximum file size 500 MB

Duration Up to 600 seconds

Vertical preferred for best in-feed rendering.

## Creative QA checklist

1. Design for 9:16 first
2. Front-load branding within first seconds
3. Keep captions within safe area

## Sources and verification

Check the official source again when a campaign has unusual delivery or format requirements.

- [TikTok for Business help](https://ads.tiktok.com/help/article/tiktok-auction-in-feed-ads)

 Last verified 5 March 2026

[TikTok documentation](https://ads.tiktok.com/help)

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