Free tools / Spotlight
Subtitles, written while you wait.
Open a video or audio file. Free AI listens, writes out every word with timings, and gives you SRT and VTT subtitle files. Nothing leaves your device.
Why add subtitles
Most people scroll social media with the sound off, so a video without captions loses them in the first second. Subtitles also help viewers who are deaf or hard of hearing, people watching in a second language, and search engines, which can read a transcript but not listen to a video.
Using the files
- YouTube: in YouTube Studio, open the video, choose Subtitles, then Upload file and pick the SRT.
- Facebook and LinkedIn: both have a caption upload option when you post or edit a video. Use the SRT.
- Your website: use the VTT file with an HTML video player.
Private by design
The tool uses Whisper, an open speech model, inside your browser. The model downloads once and your recording never leaves your device.
Questions
How does the subtitle generator work?
It uses Whisper, an open speech recognition model made by OpenAI, running inside your browser. It listens to the audio, writes out what is said with timings, and gives you subtitle files.
Is my video uploaded?
No. The AI model downloads to your browser once (about 80 MB) and the work happens on your own device. Your video stays with you.
Where can I use SRT and VTT files?
YouTube, Facebook, LinkedIn and Vimeo all accept SRT uploads. VTT is used on websites. For TikTok and Instagram, use their built-in caption tools or edit the text into the video.
How accurate is it?
Very good for clear speech in English and most major languages. Names, brands and strong accents may need fixing, so read through the text before you publish.
How long can the video be?
Up to about 15 minutes works well on a laptop. Longer files take a while and need plenty of memory.
Want Spotlight on this every day?
On Lupaan your whole team works in the background and tells you when something needs you.