Issue

Vertical videos rendered with fixed margins caused critical content to overlap platform UI elements, such as buttons and progress bars. For example, YouTube Shorts and X/Twitter platforms obscured important parts of the video due to hardcoded margin settings that did not account for vertical orientations.

Culprit

The system applied uniform margins (5% top/bottom) to both horizontal and vertical videos, ignoring platform-specific requirements. This led to:

• Top content being hidden behind platform UI elements (e.g., YouTube Shorts back button).
• Bottom content being obscured by progress bars or action buttons.
• Incorrect calculations in the parallel renderer, which used video width instead of height for positioning.

Solution

The solution involved:

1. Dynamic margin detection: Automatically adjusting margins based on video orientation (vertical vs. horizontal).
2. Platform-specific configurations: Implementing stricter margins for vertical videos (12% top, 20% bottom) to avoid UI conflicts.
3. Unified logic: Ensuring consistent margin calculations across all rendering components.
4. Fallback heuristics: Detecting legacy videos and applying appropriate margins to prevent rendering issues.

This ensured that vertical videos now comply with platform requirements while maintaining visual integrity for horizontal content.