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Subtitle guide

ASS vs SRT

TL;DR — Understand when ASS makes sense, when SRT is enough, and how to choose between them for delivery or editing.

ASS and SRT solve different jobs.

The short version

  • SRT is simple, portable, and easy to share.
  • ASS is more advanced and supports styling, positioning, and richer subtitle workflows.
  • If you only need timing and text, SRT is usually enough.
  • If you need styled subtitles or editor-friendly control, ASS is more useful.

When SRT is the better choice

  • You are delivering subtitles to a client.
  • You need the simplest upload format.
  • You only care about timing and text.

When ASS is the better choice

  • You want custom subtitle styling.
  • You need more control over subtitle appearance.
  • Your editor or workflow expects ASS as an intermediate format.

The tradeoff

SRT travels well because almost everyone can read it.
ASS is more flexible, but that flexibility comes with more structure and less universal support.

Practical rule

Start from SRT for delivery.
Move to ASS only when styling or advanced subtitle control is part of the workflow.

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