Video Editor for Solaris - FFmpeg-based video editing operations (per opheliabm/the coding agent-videoedit gap-fill repo: trimming + cutting + splitting + concatenation + speed changes + cropping + scaling + rotation + overlays + picture-in-picture + green screen removal + video stabilization + transitions + fades + privacy blur + LUT color grading + motion tracking text), audio operations (extraction, normalization, denoise, voiceover sync, music ducking), captions + subtitles (SRT/VTT generation, burn-in, auto-transcribe via Whisper + AssemblyAI + Deepgram), video formats + codecs (H.264, H.265/HEVC, AV1, ProRes, DNxHR), platform-specific exports (YouTube 4K + Shorts ve…