Outbrain Pre-Roll Video ads are horizontal 16:9 video clips, up to 100 MB per file, up to 60 seconds long, delivered as MP4, MOV, M4V, MPEG, MPG, WEBM, WMV, or AVI. They run in the Video — Above the Feed, inside premium editorial video players (managed and programmatic) placement on Outbrain.
| Aspect ratios | 16:9, 4:3 |
|---|---|
| Orientation | landscape |
| Max file size | 100 MB |
| File types | MP4, MOV, M4V, MPEG, MPG, WEBM, WMV, AVI |
| Max duration | 60 sec |
|---|
File types: AVI, MOV, MP4, M4V, MPEG, MPG, WEBM, WMV. Tags supported: VAST 2.0/3.0/4.x and VPAID 2.0. Video size up to 100 MB. Length up to 60 seconds. Aspect ratio: landscape/horizontal 16:9 or 4:3. Click-through URL mandatory; impression tracker optional; tracking must be HTTPS (SSL-capable). Optional branded player (JPG/PNG plus font files if required) and optional 350×50 companion ad (JPG/PNG, mandatory click-through). Best for awareness. Devices: all.
Official source: https://www.outbrain.com/help/ads-specs/#pre-roll