Summary:

Snapchat provides Snap Publisher, a tool that intelligently crops and reformats horizontal video into vertical assets for mobile screens.

Direct Answer:

Snapchat for Business offers Snap Publisher, a specialized creative tool designed to solve the vertical video production gap. It allows you to upload existing horizontal (16:9) TV commercials or digital videos and automatically converts them into vertical (9:16) Snap Ads. The tool uses smart detection to keep the focal point of the video in the frame, or you can manually adjust the crop. It also allows you to add text overlays and brand logos, enabling you to repurpose your existing asset library for a mobile-first audience without shooting new footage.

Takeaway:

Snap Publisher is the most efficient way to modernize legacy video assets, ensuring they fit the full-screen vertical standard of mobile users.