What size are IAB Standards Pre-Roll Video ads?

IAB Standards Pre-Roll Video ads are 640×360 pixels with an aspect ratio of 16:9.

What aspect ratio does IAB Standards Pre-Roll Video use?

IAB Standards Pre-Roll Video supports 16:9 aspect ratio.

What is the maximum file size for IAB Standards Pre-Roll Video?

Files for IAB Standards Pre-Roll Video can be up to 10 MB.

How long can a IAB Standards Pre-Roll Video video be?

IAB Standards Pre-Roll Video videos can run up to 30 seconds.

Which file formats does IAB Standards Pre-Roll Video accept?

IAB Standards Pre-Roll Video accepts MP4 and WEBM files.

What codec should IAB Standards Pre-Roll Video ads use?

Encode IAB Standards Pre-Roll Video with H.264 and AAC at 30 fps.

Where does IAB Standards Pre-Roll Video appear on IAB Standards?

IAB Standards Pre-Roll Video ads appear in the Before video content placement on IAB Standards.

Where can I find the official IAB Standards Pre-Roll Video documentation?

The official source for IAB Standards Pre-Roll Video requirements is https://iabtechlab.com/standards/vast/, linked from this page.

IAB Standards Pre-Roll Video ad specs

IAB Standards Pre-Roll Video ads are horizontal 16:9 video clips, measured at 640×360 px, up to 10 MB per file, up to 30 seconds long, delivered as MP4 or WEBM. They run in the Before video content placement on IAB Standards. Encode with H.264 video with AAC audio at 30 fps for clean playback across devices.

Dimensions: 640×360 px
Aspect ratio: 16:9
Max file size: 10 MB

Visual specifications

Dimensions	640 × 360 px
Aspect ratios	16:9
Orientation	landscape
Max file size	10 MB
File types	MP4, WEBM

Video & audio

Max duration	30 sec
Video codec	H.264
Frame rate	30 fps
Video bitrate	2500 kbps
Audio codec	AAC
Audio channels	stereo (2)
Audio bitrate	128 kbps
Sample rate	44100 Hz

Notes & source

VAST-compliant pre-roll unit. Common durations are 15s and 30s; skippable after 5s recommended. Must include a companion banner. Delivered via VAST 4.x or VPAID 2.0.

Official source: https://iabtechlab.com/standards/vast/

Frequently asked questions

What size are IAB Standards Pre-Roll Video ads?: IAB Standards Pre-Roll Video ads are 640×360 pixels with an aspect ratio of 16:9.
What aspect ratio does IAB Standards Pre-Roll Video use?: IAB Standards Pre-Roll Video supports 16:9 aspect ratio.
What is the maximum file size for IAB Standards Pre-Roll Video?: Files for IAB Standards Pre-Roll Video can be up to 10 MB.
How long can a IAB Standards Pre-Roll Video video be?: IAB Standards Pre-Roll Video videos can run up to 30 seconds.
Which file formats does IAB Standards Pre-Roll Video accept?: IAB Standards Pre-Roll Video accepts MP4 and WEBM files.
What codec should IAB Standards Pre-Roll Video ads use?: Encode IAB Standards Pre-Roll Video with H.264 and AAC at 30 fps.
Where does IAB Standards Pre-Roll Video appear on IAB Standards?: IAB Standards Pre-Roll Video ads appear in the Before video content placement on IAB Standards.
Where can I find the official IAB Standards Pre-Roll Video documentation?: The official source for IAB Standards Pre-Roll Video requirements is https://iabtechlab.com/standards/vast/, linked from this page.