IAB Standards

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  • Video
  • Video
  • CTV

IAB Standards Linear Video — :60 ad specs

IAB Standards Linear Video — :60 ads are 16:9 or 4:3 video clips, up to 60 seconds long, delivered as MP4. They run in the Post-roll or extended mid-roll placement on IAB Standards. Encode with H.264 video with AAC-LC or HE-AACv1 audio at up to 30 fps.

  • 16:9
  • 4:3
  • 60 s
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Visual

Aspect ratios
16:9, 4:3
File types
MP4

Video & audio

Max duration
60 s
Video codec
H.264
Frame rate
30 fps
Audio codec
AAC-LC or HE-AACv1
Channels
stereo

Notes & source

  • 60-second spots run sparingly, usually as post-roll or in extended mid-roll breaks
  • Supply three ready-to-serve files (low, medium, high) plus a mezzanine file
  • Typical 16:9 sizes are 640×360, 854×480/1024×576 and 1280×720/1920×1080
  • Target video bitrates: 500–700 kbps low, 700–1500 kbps medium, 1500–2500 kbps (720p) and 2500–3500 kbps (1080p) high
  • HLS (M3U8) or MPEG-DASH for adaptive streaming
  • WebM/VP8 may be added alongside the MP4s
  • Loudness -24 LKFS ±2 in the US (ATSC A/85) or -23 LUFS ±1 in the EU (EBU R128)
  • Peaks below -6 dB true peak
  • Keep the source frame rate: 29.97 fps (NTSC), 25 fps (PAL) or 23.976 fps (film)
  • No slate or leader before or after the ad

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