Creative Specifications

Platform creative delivery

Audio
Creative Specifications

Published requirements, recommendations, and delivery guidance from the governed Cphere specification catalog.

Formats supported
Streaming Audio
Primary campaign uses
Not specified by platform
Last verified
Aug 2, 2026
Recommended delivery package
Not specified by platform
Catalog status
CurrentLimited Documentation
Audio creative formats
Published catalog 5Published August 2, 2026

Quick delivery checklist

What to send Cphere

  • Final platform-ready creative
  • Approved copy and CTA
  • Destination URL and tracking parameters
  • Brand and legal requirements

Canonical records

Formats and placements

Streaming Audio

Published format-level guidance.

CurrentLimited Documentation

Required

Not specified by platform

Recommended

Not specified by platform

Placement-dependent

Not specified by platform

Cphere best practice

Not specified by platform

Programmatic Audio

Limited DocumentationDirect link
Required

Not specified by platform

Recommended
Duration
15 or 30 seconds seconds
File Types
MP3 · WAV
Bitrate
128–192 kbps
Companion Banner
300x250 clickable companion displays during audio play pixels
Placement-dependent
Stackadapt Technical Limits
Verification required — Sample rate, channels, maximum file size, and DAAST/VAST support are documented only in the login-gated StackAdapt help center; confirm in the platform console.
Cphere best practice
Script Length
About 40 words per 15 seconds and 55–75 words per 30 seconds

Spotify

Direct link
Required
File Types
MP3 · WAV · OGG
Maximum File Size
50 MB
Quality
192–320 kbps, 44.1 kHz, stereo; loudness -16 LUFS ±1.5
Duration
30 seconds maximum standard; up to 60 seconds in select Direct campaigns
Companion Display
600x600 minimum, 1:1, JPEG/PNG, 200 KB maximum
Recommended
Script Length
65 words or fewer per 30 seconds; about 100 words per 60 seconds
Placement-dependent

Not specified by platform

Cphere best practice

Not specified by platform

Delivery detail

File, copy, audio, and destination requirements

File requirements

Not specified by platform

Copy requirements

Not specified by platform

Audio requirements

Not specified by platform

Tracking requirements

Not specified by platform

Landing-page requirements

Not specified by platform

Prohibited or unsupported elements

No prohibited-element list is published for this record.

Interface-aware delivery

Safe zones

No verified safe-zone diagram is published for this placement. Do not infer pixel-safe areas.

Clearly separated guidance

Recommended best practices

No additional Cphere best-practice copy is published for this record.

Source transparency

Sources and verification

Last verified: Aug 2, 2026. Platform requirements may change; check these official references before final delivery.

Publisher, exchange, and standards-body trademarks referenced in this specification belong to their respective owners. Cphere does not imply endorsement or partnership.