Video Editor SJC

Purpose & User Intent: A browser-based video editor designed for quick, lightweight editing without desktop software. Primary users include solo creators, educators, marketing teams, and small studios who need to trim, cut, merge, adjust audio, and export short, shareable videos. Use cases include social posts, classroom clips, product demos, and quick revisions in SJC workflows or remote collaboration. Assumes users require fast turnaround and minimal setup. Core objective is to enable reliable, repeatable edits in a web environment without installation or licensing hurdles.
Core Logic & Features: Timeline-based non-destructive editing with clip trimming, cutting, merging, and simple transitions. Required features: media import, linear timeline, trim/cut operations, basic audio adjustments, and MP4 export. Optional/advanced: multi-track audio, captions, basic color correction, proxy support, batch export, and project templates. Validation rules ensure supported formats (MP4, MOV, WEBM), reasonable file sizes, and non-empty clip lists. Outputs include final video file, duration, resolution, and export metadata.
Algorithms & Calculations: Timeline composition uses frame-accurate trimming and sequence merging. Export path derives from selected preset, target resolution, and frame_rate; proxy rendering is chosen automatically for large inputs. Simple bitrate estimation guides output quality; basic audio normalization is applied to prevent clipping.
Error & Edge Cases: Unsupported formats yield error codes; missing inputs or empty timeline cause errors; very large files trigger proxy mode; export failures return diagnostic metadata. Local processing is preferred; if cloud storage is involved, data transfer occurs with user consent and clear retry behavior.
Industry/Region & Localization: Exports follow common web video standards (H.264/MP4), accommodate 24/30/60fps, and support UTF-8 metadata. No location-specific licensing requirements beyond standard codec availability.
Assumptions & Exclusions: Client-side or browser-based runtime assumed; excludes high-end visual effects, motion tracking, advanced color grading, and desktop-only workflows. Not a full NLE; focused on rapid, web-first editing and sharing.