This format was historically common on (e.g., smartwatches with small square screens). Today, it’s niche but persists in some low-resource or embedded systems.

The MP4 container (MPEG-4 Part 14) was first introduced in 2001 and became a standard for mobile video because it offered relatively high quality at small file sizes. "Upd Full":

With UPD protocols, live sports and breaking news can be streamed with minimal buffering. This is particularly vital for betting apps or live data feeds where every millisecond counts. The 120x160 format allows for a "picture-in-picture" style experience that doesn’t bog down the device’s CPU. 2. Interactive Media & Gamification

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Developing media for a 120x160 UPD canvas requires radical minimalism. Content creators must strip away visual clutter and focus on high-contrast, centralized action. 1. Micro-Gaming and Interactive Fiction

The entertainment industry is no longer just about the big screen. The rise of highlights a shift toward "snackable" and highly accessible media. 1. Enhanced Real-Time Streaming