自動キャプションスタイリング＆動画エクスポートエンジン

MicrocosmWorks built a template engine with over 40 preset caption styles, including word-by-word highlight, karaoke-style progressive reveal, and animated text effects. The engine analyzes video backgrounds to automatically select contrasting colors, shadow depths, and positioning that ensure readability across varying scene compositions.

Yes, MicrocosmWorks integrated speaker diarization that identifies individual speakers from the audio track and assigns distinct color schemes or positioning to each speaker's captions. For podcast-style content with consistent speakers, the system learns speaker identities and maintains their assigned styles across episodes.

MicrocosmWorks integrated Whisper large-v3 as the transcription backend, achieving 95-98% word accuracy for clear English audio and 90-95% for accented speech or noisy environments. The system includes a manual correction interface that updates the transcript and automatically re-renders styled captions with the corrected text.

MicrocosmWorks built the export pipeline to burn styled captions directly into H.264 and H.265 encoded MP4 files at any resolution from 720p to 4K. The engine also exports separate SRT, VTT, and ASS subtitle files with styling metadata for platforms that support styled subtitle rendering natively.

MicrocosmWorks delivers caption technology projects at rates of $20-$40/hr, with a full caption styling engine including transcription integration, 40+ style templates, and multi-format export typically requiring 350-500 development hours. The system pays for itself rapidly for content teams that currently spend 15-30 minutes manually styling captions per video.