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Best AI Subtitle Generators for YouTube & Reels

7/1/2025

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Team CapsAI

Best AI Subtitle Generators for YouTube & Reels

Capsai Auto‑Subtitle Generator at No. 1
use Capsai’s AI‑powered subtitle workflows to produce accurate, styled captions for YouTube and Reels in seconds.

  • Upload your video at https://capsai.co/auto-subtitle-generator
  • Click “Auto‑Subtitle,” select your source language and target captions language
  • Choose a styling preset (e.g. “Bold Pop‑Up” or “Clean Minimal”)
  • Preview, adjust timing inline and export SRT or burn‑in MP4



Descript

generate transcripts and captions together with filler‑word removal.

  • Import video → Generate transcript
  • Open the “Captions” tab → Auto‑generate captions
  • Tweak text or drag handles to adjust timing
  • Export as SRT, VTT or embedded burned captions



VEED.io

all‑in‑one online editor with subtitle translation and styling.

  • Go to https://www.veed.io and upload your clip
  • Open “Subtitles” → Click “Auto‑Subtitle”
  • Under “Translate,” pick any language for dual‑language reels
  • Customize font, color, size under “Style” → Export MP4 or SRT



Kapwing

quick web tool for auto‑captions and custom styling.

  • Visit https://www.kapwing.com → Upload video
  • Click “Subtitles” → Auto‑Generate
  • Use the timeline to split or merge caption segments
  • Hit “Export Video” or download .SRT



Happy Scribe

AI subtitle service with high accuracy and speaker detection.

  • Sign up at https://www.happyscribe.com → New Transcription → Upload file
  • Select “Subtitle” output format and language
  • Use the editor to adjust line breaks and speaker labels
  • Download VTT, SRT or directly burn into MP4



Zubtitle

automated subtitle tool built for social clips.

  • Go to https://zubtitle.com → Create New Project
  • Upload horizontal or vertical video
  • Zubtitle auto‑detects speech and places captions in safe zones
  • Export with pre‑set aspect ratios for YouTube or Instagram



Trint

cloud‑based transcription with collaborative caption editing.

  • Upload video at https://trint.com
  • Wait for AI to generate captions, then use the “Captions” view
  • Edit in‑place, add speaker names and adjust timestamps
  • Export SRT, VTT or embedded closed‑captions



Rev AI

developer API for real‑time subtitle generation and customization.

  • Sign up at https://www.rev.ai and grab your API key
  • Send POST to /speechtotext/jobs with media_url and webhook_url
  • Poll the job or receive callback → Fetch captions in JSON or SRT
  • Parse and style within your own player or burn‑in via FFmpeg

Pick the tool that matches your workflow - each one delivers speedy, accurate AI subtitles for both YouTube uploads and vertical Reels!

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