Freedom251 › AI Video Caption Generators
FlowSub
What FlowSub is
FlowSub is a web service that turns video and audio into subtitles and transcripts. It can translate text, provide an editor, and burn captions directly into video. The homepage claims transcription in 29+ languages with 95%+ accuracy. Files can be exported as SRT, VTT, TXT, or ASS, while uploads may use any format up to 500 MB; listed examples include MP4, MKV, MOV, AVI, WebM, MP3, WAV, M4A, and OGG. FlowSub says one credit covers five minutes of transcription, and translation uses one credit. Its free plan provides 5 credits each month, 29+ languages, the listed exports, and no watermark. Pro offers 100 credits monthly, priority processing, and all subtitle features, with annual billing at $3.49 a month or monthly billing at $4.99 a month. Source uploads are deleted after 24 hours; generated files remain 30 days on paid plans and 24 hours on free plans. Uploaded files are sent to OpenAI for processing.
Who it suits
FlowSub suits YouTubers, podcasters, and course creators who need multilingual captions, transcripts, or translated subtitles. It also fits users who want burned-in video captions or downloadable subtitle files.
What it does well
- Transcribes in 29+ languages
- Claims 95%+ transcription accuracy
- Exports SRT, VTT, TXT, and ASS
- Burns captions into video
- Free plan includes five monthly credits
What to know first
- Uploads are limited to 500 MB
- Free generated files last 24 hours
- Uploaded files go to OpenAI servers
- Plan details differ between pages
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free | 5 credits/month · SRT/VTT/TXT/ASS · 29+ languages · no watermark | Free |
| Pro | Cancel anytime · 100 credits/month · 29+ languages | $4.99 a month |
| Pro Monthly | monthly · All Starter features · AI voice, music, image, and video generation | $16.99 a month |
| Elite Monthly | monthly · Everything in Pro · double the credits · early access | $29.99 a month |
| Pro (annual) | $41.88 billed yearly · 100 credits/month · priority processing · all subtitle features | $3.49 a month |
| Pro (monthly) | monthly · 100 credits/month · priority processing · all subtitle features | $4.99 a month |
| Starter Monthly | monthly · Transcription features · translation · editor · burn-in · FFmpeg tools | $8.99 a month |
As flowsub.ai lists them, read 11 Oct 2026. The maker's own page has the final word.
Verdict
FlowSub combines transcription, translation, editing, and caption burn-in in a browser service. Its free allowance is suitable for limited work, while paid plans add more credits and longer generated-file retention.
Facts from FlowSub's own pages
- Burn-in captions
- Yes · flowsub.ai, 22 Sept 2026
- Caption languages
- 29 · flowsub.ai, 22 Sept 2026
- Credit usage
- The homepage says one credit covers five minutes of transcription and translation costs one credit. · flowsub.ai, 11 Oct 2026
- Data processing
- The privacy policy says uploaded files are sent to OpenAI servers for transcription and translation processing. · flowsub.ai, 11 Oct 2026
- Export formats
- Exports include SRT, VTT, TXT, and ASS subtitle or text files. · flowsub.ai, 11 Oct 2026
- File retention
- Uploaded source files are automatically deleted after 24 hours; generated subtitle files are kept for 30 days on paid plans and deleted after 24 hours on free plans. · flowsub.ai, 11 Oct 2026
- Free plan
- Yes · flowsub.ai, 22 Sept 2026
- Integrations and services
- The privacy policy lists Clerk, Supabase, Cloudflare R2, OpenAI, Stripe, Google AdSense, and Vercel Analytics as third-party services used to operate FlowSub. · flowsub.ai, 11 Oct 2026
- Languages and accuracy
- The homepage claims transcription in 29+ languages with 95%+ accuracy. · flowsub.ai, 11 Oct 2026
- Payments
- The pricing page says payments are processed through Stripe and secured with TLS encryption, and that FlowSub does not store card details. · flowsub.ai, 11 Oct 2026
- Plan information differs
- The terms list Starter, Pro, and Elite monthly plans at prices that differ from the Free and Pro plans shown on the pricing page. · flowsub.ai, 11 Oct 2026
- Privacy
- The privacy policy says FlowSub does not sell, rent, or share personal data with third parties for marketing purposes. · flowsub.ai, 11 Oct 2026
- Purpose
- FlowSub transcribes video and audio into subtitles and transcripts, with translation, editing, and video burn-in features. · flowsub.ai, 11 Oct 2026
- Paid from
- 3.49 · flowsub.ai, 22 Sept 2026
- Subtitle export
- other formats · flowsub.ai, 22 Sept 2026
- Support and refund
- The pricing page gives [email protected] as the contact and advertises a 14-day money-back guarantee on Pro. · flowsub.ai, 11 Oct 2026
- Upload limits
- The homepage says uploads can be in any format up to 500 MB; its FAQ lists MP4, MKV, MOV, AVI, WebM, MP3, WAV, M4A, and OGG. · flowsub.ai, 11 Oct 2026
- Who it is for
- The homepage names YouTubers, podcasters, and course creators as audiences for FlowSub. · flowsub.ai, 11 Oct 2026
Where FlowSub stands on Freedom251
- AI Video Caption Generators#83 of 99