Video Editor

Purpose and scope: The tool supports individuals and teams who need reliable, accessible video editing without desktop software. It accepts common formats (MP4, MOV, WEBM), provides a non-linear timeline for trimming, splitting and merging clips, and offers basic transitions and audio adjustments. Core operations include cut, trim, splice, and re-encode; outputs target common streaming platforms with preset profiles.
Core logic and features: Ingests MP4/MOV/WEBM, supports a non-linear timeline, and enables cut, trim, merge, and simple transitions. Required features are ingest, timeline assembly, trimming, merging, playback preview, and export presets (format, resolution, bitrate). Optional features include transitions, color correction, audio normalization, subtitles, proxy editing, project saving, cloud sharing, batch processing. The tool enforces non-destructive edits, preserves aspect ratio, and applies color space conversions to sRGB. Output is reproducible given identical inputs and settings.
Inputs and outputs: Inputs include source_videos (array, required), output_settings (format, resolution, bitrate, frame_rate), edits (trim_ranges, clip_order, transitions, effects), and optional project_name. Outputs include final_video (video file, MP4/MOV, 1080p+), log, and project_file. Validation checks codecs, formats, resolution bounds, and asset integrity.
Algorithms and calculations: Edits are applied via a deterministic timeline model; keyframe interpolation drives effects; proxies may be generated for large files; final encoding uses the selected codec while preserving quality as allowed by format. When concatenating clips, the tool uses format-appropriate join methods to minimize quality loss.
Error and edge cases: Missing required inputs trigger validation errors; unsupported formats generate clear messages; extremely large assets may require proxy rendering or longer processing; frame rate mismatches are reconciled by frame sampling; external data unavailability results in fallback defaults.
Industry, region and localization: Aligns with ISO/IEC media standards and common US/EU region presets; timecodes use ISO 8601 durations; no currency handling is required for editing workflows. Localization focuses on locale-aware duration formatting for captions or metadata.
Assumptions and exclusions: Assumes assets have proper rights for processing; excludes advanced multicam editing, 3D work, advanced color grading, and post-production tasks beyond editing. Does not include social posting features; offline mode is not assumed.