Aspect ratio:

4:3 (400 x 300, 1920 x 1080)
File size: 25-100 MB
Video length: :15, :30, :60
File type: .mp4

Music, Sound and Voice Tracks

Format: MP3, WAV, WMA, or OGG format

Bitrate: at least 128 kbps

Trimmed of slate/silence

Duration: 15 to 60 seconds (15 and 30 seconds are most used)

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Companion Banner

Format: GIF, JPEG, PNG, HTML, JavaScript.

We recommend using the following companion banner sizes:

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Widely Used:  Medium Rectangle (300x250px). This is the most used commonly used format for companion banners across all player formats.

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Generally Used: Leaderboard (728x90px). This common format is typically used for desktop (browser-based) players.

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Occasionally Used: Smartphone Static Banner (300x50px), and Smartphone Static Wide Banner (320x50px). These are fewer common formats are only used in mobile apps.

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Tracking Codes

Format: 1x1 pixel only

Supported events: Audio impression and quartiles.