1. Create your video creative. Use the 3rd party video option.
2. For 3rd party video just copy your VAST tag.
3. Manually add your naming convention. Landing page, Ad Server, Creative Placement ID will auto-populate based on the VAST tagging parameters.
Target Specific Inventory
To target CTV inventory specifically, update your Device Type rail.
To target all STX supply, follow the instructions here.
To target a specific PMP using a Deal ID, follow the instructions here.
Detailed CTV creative specs listed here.
Detailed CTV VAST Tag QA listed here.