Best AI Subtitle Generators for YouTube & Reels
7/1/2025
|Team CapsAI

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
withmedia_url
andwebhook_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!
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
withmedia_url
andwebhook_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!