Pre-roll video ad specs
The following pre-roll video ad specifications are for Workbench and Google Ad Manager.
Publisher audience segments
- VAST tags can be utilized for interstitial or pre-roll video ads. See VAST tag technical specs for additional requirement details.
- Pre-roll video displays in both portrait and landscape device orientations. One set of assets is needed for all devices.
- Vertical video displays in full screen only when a user selects the full screen button.
- Pre-roll video ads will have the ad identifier located on the lower left corner. See Ad identifier for more info.
| Asset Format | Vertical Video | Square Video | Horizontal Video |
| Aspect Ratio | 9:16 [720 pixel minimum] | 1:1 [720 pixel minimum] | 16:9 [720 pixel minimum] |
| Video Codec | H.264 | H.264 | H.264 |
| Video Bitrate | 600–800 kbps (recommended) | 600–800 kbps (recommended) | 600–800 kbps (recommended) |
| Audio Codec | Uncompressed | Uncompressed | Uncompressed |
| Audio Sample Rate | 44.1kHz (minimum) | 44.1kHz (minimum) | 44.1kHz (minimum) |
| Duration | 5 seconds minimum, 30 seconds maximum | 5 seconds minimum, 30 seconds maximum | 5 seconds minimum, 30 seconds maximum |
| Max File Size | 250 MB (MOV, M4V, MP4) | 250 MB (MOV, M4V, MP4) | 250 MB (MOV, M4V, MP4) |
Horizontal video format (16:9)
