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🎧 Streaming Audio Requirements

See below for the accepted Streaming Audio specifications.

 

Streaming Audio is avalible in the US, CA & UK

Accepted File Formats:

  • .MP3, .M4A, .WAV

  • Minimum bitrate: 192 kbps

  • Max file size: 500MB

  • For third-party creatives, we can’t reduce bitrate below the original encoding.

Preferred Tag Type:

  • VAST 2.0

  • Include both .MP3 and .OGG in the tag

    • .OGG is only for third-party use (not for first-party hosting)

Ad Lengths Accepted:

  • 15 or 30 seconds (60 sec allowed but not recommended)

Companion Banners (optional):

  • File types: .JPEG or .PNG

  • Size: 300x250

  • Max file size: 150KB


🚫 Prohibited Content in Audio Ads

  • Online gambling promotions (except brick-and-mortar)

  • Violence, hate speech, adult/pornographic themes

  • Pops, simulated clicks, malware, or code execution

  • Explicit language or simulated cursing (e.g., #$%!)

  • Spelling errors


📡 Third-Party Tag Specs

a2x by Triton Digital

  • Suggested bitrate: 128 kbps

  • File types: .MP3, .WAV, .WMA, .OGG

  • Ad lengths: 15, 30, or 60 seconds

  • Banner: .JPEG, .PNG, .GIF

  • Banner tracking: 1x1 pixel (audio), pixel or JS tag (banner)

Adswizz (AudioMax)

  • Does not apply to Pandora inventory

  • Suggested bitrate: 196 kbps

  • File types: .MP3, .WAV, .OGG, .ACC

  • Ad lengths: 15, 30, or 60 seconds

  • Banner: .JPEG, .GIF, .HTML

  • Banner must be hosted on The Trade Desk (TTD)

  • Max file size: 2MB

  • Tracking: supports JavaScript, HTML, or rich media


📐 Companion Banner Sizes

For Spotify and Pandora, use a third-party VAST tag with supported companion banner sizes. Delivery isn’t guaranteed but will be attempted.


🔧 Bitrate Guidance

  • Most publishers accept 128–196 kbps

  • For maximum reach, use 160 kbps or higher

  • TTD-hosted creatives: DSP can adjust bitrate as needed

  • Third-party hosted creatives: DSP cannot adjust bitrate

If running across multiple publishers (e.g., Spotify + iHeart), you can upload a 320 kbps hosted creative—TTD will adjust it for each publisher as needed.