What is the maximum file size for IAB Standards Standard Audio Ad?

Files for IAB Standards Standard Audio Ad can be up to 5 MB.

How long can a IAB Standards Standard Audio Ad audio file be?

IAB Standards Standard Audio Ad audio can run up to 30 seconds.

Which file formats does IAB Standards Standard Audio Ad accept?

IAB Standards Standard Audio Ad accepts MP3, AAC, and OGG files.

What codec should IAB Standards Standard Audio Ad ads use?

Encode IAB Standards Standard Audio Ad with AAC.

Where does IAB Standards Standard Audio Ad appear on IAB Standards?

IAB Standards Standard Audio Ad ads appear in the In-stream (music / podcast) placement on IAB Standards.

Where can I find the official IAB Standards Standard Audio Ad documentation?

The official source for IAB Standards Standard Audio Ad requirements is https://iabtechlab.com/standards/daast-digital-audio-ad-serving-template/, linked from this page.

Are these IAB Standards Standard Audio Ad specs kept up to date?

Yes — every spec entry references IAB Standards's official documentation source so dimensions, file size limits, and codec requirements stay in sync as the platform changes.

Can I reuse the same creative for other IAB Standards placements?

Often partially — many IAB Standards placements share aspect ratios but differ in safe zones, duration, or file size. Always cross-check the target placement's spec page before reusing creative.

IAB Standards Standard Audio Ad ad specs

IAB Standards Standard Audio Ad ads are audio files, up to 5 MB per file, up to 30 seconds long, delivered as MP3, AAC, or OGG. They run in the In-stream (music / podcast) placement on IAB Standards. Master audio at AAC, 192 kbps, and -16 LUFS loudness for consistent loudness.

Max file size: 5 MB
Max duration: 30 sec
File types: MP3, AAC, OGG

Visual specifications

Orientation	any
Max file size	5 MB
File types	MP3, AAC, OGG

Video & audio

Max duration	30 sec
Audio codec	AAC
Audio channels	stereo (2)
Audio bitrate	192 kbps
Sample rate	44100 Hz
Bit depth	16-bit
Loudness	-16 LUFS
Peak level	-1 dBFS

Notes & source

DAAST/VAST-compliant audio ad unit for streaming music and podcast environments. Common durations are 15s and 30s. Must include a companion display banner (300×250). Loudness normalized to −16 LUFS per IAB Audio Ad guidelines.

Official source: https://iabtechlab.com/standards/daast-digital-audio-ad-serving-template/

Frequently asked questions

What is the maximum file size for IAB Standards Standard Audio Ad?: Files for IAB Standards Standard Audio Ad can be up to 5 MB.
How long can a IAB Standards Standard Audio Ad audio file be?: IAB Standards Standard Audio Ad audio can run up to 30 seconds.
Which file formats does IAB Standards Standard Audio Ad accept?: IAB Standards Standard Audio Ad accepts MP3, AAC, and OGG files.
What codec should IAB Standards Standard Audio Ad ads use?: Encode IAB Standards Standard Audio Ad with AAC.
Where does IAB Standards Standard Audio Ad appear on IAB Standards?: IAB Standards Standard Audio Ad ads appear in the In-stream (music / podcast) placement on IAB Standards.
Where can I find the official IAB Standards Standard Audio Ad documentation?: The official source for IAB Standards Standard Audio Ad requirements is https://iabtechlab.com/standards/daast-digital-audio-ad-serving-template/, linked from this page.
Are these IAB Standards Standard Audio Ad specs kept up to date?: Yes — every spec entry references IAB Standards's official documentation source so dimensions, file size limits, and codec requirements stay in sync as the platform changes.
Can I reuse the same creative for other IAB Standards placements?: Often partially — many IAB Standards placements share aspect ratios but differ in safe zones, duration, or file size. Always cross-check the target placement's spec page before reusing creative.