What size are IAB Standards Outstream / In-Read Video ads?

IAB Standards Outstream / In-Read Video ads are 640×360 pixels with an aspect ratio of 16:9.

What aspect ratio does IAB Standards Outstream / In-Read Video use?

IAB Standards Outstream / In-Read Video supports 16:9 aspect ratio.

What is the maximum file size for IAB Standards Outstream / In-Read Video?

Files for IAB Standards Outstream / In-Read Video can be up to 10 MB.

How long can a IAB Standards Outstream / In-Read Video video be?

IAB Standards Outstream / In-Read Video videos can run up to 30 seconds.

Which file formats does IAB Standards Outstream / In-Read Video accept?

IAB Standards Outstream / In-Read Video accepts MP4 and WEBM files.

What codec should IAB Standards Outstream / In-Read Video ads use?

Encode IAB Standards Outstream / In-Read Video with H.264 and AAC at 30 fps.

Where does IAB Standards Outstream / In-Read Video appear on IAB Standards?

IAB Standards Outstream / In-Read Video ads appear in the In-content (between paragraphs) placement on IAB Standards.

Where can I find the official IAB Standards Outstream / In-Read Video documentation?

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

IAB Standards Outstream / In-Read Video ad specs

IAB Standards Outstream / In-Read 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 In-content (between paragraphs) 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

Video unit that plays within editorial content, outside a video player. Sound off by default; activates on user interaction. Typically auto-plays when at least 50% in view per MRC viewability standards.

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

Frequently asked questions

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