Reach plc

Published Modified

  • Video
  • Video

Reach plc Pre-roll (VAST tag) ad specs

Reach plc Pre-roll (VAST tag) ads are horizontal 16:9 video clips, at least 1280×720 px, up to 20 MB per file, 6–30 seconds long, delivered as MP4 or WEBM. They run in the Reach websites · In-article video player (Primis) · Pre-roll placement on Reach plc. Encode with H.265 (HEVC) and H.264 (AVC) video at up to 30 fps.

  • min 1280×720 px
  • 16:9
  • 20 MB
  • 30 s
Test a creative

Visual

Minimum size
1280 × 720 px
Aspect ratios
16:9
Max file size
20 MB
File types
MP4, WEBM
Recommended size
1920 × 1080 px

Video & audio

Max duration
30 s
Min duration
6 s
Video codec
H.265 (HEVC) and H.264 (AVC)
Frame rate
30 fps

Notes & source

  • VAST 4.1 is preferred (3.0 to 4.2 accepted)
  • Include a mezzanine file under 500 MB for VAST 4.x
  • 6–15 seconds on mobile, 15–30 seconds on desktop, 30 seconds at most
  • 6, 15 or 30 seconds recommended
  • Supply H.265 and H.264 MP4 renditions (WebM optional): a high rendition under 20 MB and a low one under 4 MB
  • Frame rate 23.976, 24, 25 or 30 fps
  • Loudness -16 LKFS ±2 dB with true peak no higher than -1 dBTP
  • Autoplays with sound off
  • OMID is required for viewability and SIMID is the interactive standard
  • VPAID 2.0 still works but is deprecated
  • Keep the bottom 20% and the top right clear of player controls and the skip button
  • Up to 3 wrapper redirects (never more than 5), VAST response under 500 ms and creative load under 2 seconds
  • Effective 5 March 2026 (VAST Guidelines v1.0)

Official source · checked not yet

Official source · checked not yet

Frequently asked questions

What size are Reach plc Pre-roll (VAST tag) ads?

Reach plc Pre-roll (VAST tag) videos must be at least 1280×720 pixels; 1920×1080 is recommended.

What aspect ratio does Reach plc Pre-roll (VAST tag) use?

Reach plc Pre-roll (VAST tag) uses 16:9.

What is the maximum file size for Reach plc Pre-roll (VAST tag)?

Files for Reach plc Pre-roll (VAST tag) can be up to 20 MB.

Which file formats does Reach plc Pre-roll (VAST tag) accept?

Reach plc Pre-roll (VAST tag) accepts MP4 and WEBM files.

How long can Reach plc Pre-roll (VAST tag) videos be?

Reach plc Pre-roll (VAST tag) videos run 6–30 seconds.

Related formats