Subtitle Generator

BETA

Transcribe audio or video, refine every cue, and export timed subtitles without uploading your media.

Quick answer and specifications

The core workflow runs in this browser. Check the supported formats, published limits, and any on-demand model download before you start.

Inputs
WAV, MP3, M4A, AAC, OGG, Opus, FLAC, MP4, MOV, M4V, & WebM
Outputs
SRT, VTT, txt, & JSON
Processing
On this device, in the browser
Model languages
100 languages — see the language selector
Per-file limit
200 MB
Files per run
1
Media duration limit
60 min
On-demand model download
99 MB
Last verified

The interface language does not determine the model language. Recognition and pronunciation quality vary; check the result.

Your media and transcript stay on this device. Speech models are downloaded to your browser and cached for later use.

Drop one audio or video file

Up to 200 MB and 60 minutes. WAV, MP3, M4A, AAC, OGG, Opus, FLAC, MP4, MOV, M4V, or WebM.

Select files

Continue with a focused workflow

Video to SRT Subtitle Generator →

Before you use this tool

Product information reviewed by Aiviko Team

Where processing happens

The selected input is processed in your browser and is not uploaded to an Aiviko processing server.

What may use the network

The page may download code, fonts, runtime files or machine-learning models. Analytics and advertising load only under the choices and conditions described in the privacy and cookie policies.

Results and limits

Speed, accuracy and maximum practical file size depend on the input, browser and device. Review the guide before using the output for an important decision.

Read the full guide and troubleshooting notes →