Convertisseur de Sous-titres SRT et VTT et Architecture Horodatée
Convertisseur de Sous-titres SRT et VTT et Architecture Horodatée
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Formule & Méthode de Calcul
Subtitle Node = Sequence Number + [Start Time ➔ End Time] + Text Payload
The SubRip (SRT) format is strictly sequential. A single missing arrow `-->` or a malformed timestamp (HH:MM:SS,ms) will break the entire subtitle file during playback.
Bonnes Pratiques & Conseils
- Keep Lines Short: Human reading speed is limited. Never exceed 42 characters per line, and never exceed 2 lines per subtitle block. If a sentence is longer, split it into two separate timestamped blocks.
- Use WebVTT for Modern Web: While SRT is the legacy standard for desktop video players, WebVTT is the native standard for HTML5 `<track>` tags. VTT supports advanced styling (colors, positioning) that SRT lacks.
- Include Non Speech Audio: True accessibility requires Closed Captions (CC), not just subtitles. Always bracket significant audio cues, like `[explosion]` or `[upbeat music playing]`, for deaf and hard of hearing viewers.