What is CaptionLK?
CaptionLK is an AI video captioning tool that transcribes audio into Sinhala or Tamil captions and burns them directly into the video for publishing. You upload a clip, the tool auto-transcribes it, and you edit the caption text, timing, position, and size in the browser before rendering. Styling options include colors, backgrounds, and presets such as the TikTok word-by-word effect, with a live preview so you can see the result before committing a render. A useful detail is cross-language captioning: you can caption a Tamil video in English, or otherwise pick a caption language separate from the spoken one. It accepts MP4, MOV, M4V, WEBM, and MKV files up to 20 minutes and 500MB, and also offers AI dubbing and commercial-generation features. For creators publishing in Sri Lankan languages, this is one of the few AI captioning tools on BestAIFor built specifically for Sinhala and Tamil rather than treating them as an afterthought. It fits YouTubers, TikTokers, news outlets, and educators across South Asia who need accurate local-language subtitles fast.
What is CaptionLK used for?
Auto-generating and burning Sinhala or Tamil subtitles into YouTube, TikTok, news, and educational videos for South Asian audiences.
How much does CaptionLK cost?
Pay-as-you-go USD
$1 for 2 credits up to $65 for 300 credits (credits never expire)
Pay-as-you-go LKR
LKR 300 for 5 credits up to LKR 8,000 for 300 credits
Pros and cons
Pros
- Automatic transcription into Sinhala or Tamil, burned directly into the exported video
- In-browser editing of caption text, timing, position, and size with a live preview
- Cross-language captioning: caption a video in a language different from its spoken audio
- Styling presets including the TikTok word-by-word effect
- Pay-as-you-go credits that never expire, billed per minute rounded up
Cons
- Free trial exports carry a watermark
- Upload limits of 20 minutes and 500MB per file
- Caption languages focus on Sinhala and Tamil, so it is less of a fit outside South Asian content
Questions about CaptionLK
What is CaptionLK used for?
CaptionLK is used to automatically transcribe a video's audio into Sinhala or Tamil captions, edit them in the browser, and burn the styled subtitles directly into the video for publishing.
Is CaptionLK free?
It offers 1 free trial credit on signup, but trial exports carry a watermark. Beyond that it runs on pay-as-you-go credits that never expire, starting at $1 for 2 credits or LKR 300 for 5 credits.
Can CaptionLK caption a video in a different language than it was spoken in?
Yes. CaptionLK lets you pick a caption language separate from the spoken language — for example, captioning a Tamil video in English.
What video formats and limits does CaptionLK support?
It accepts MP4, MOV, M4V, WEBM, and MKV files up to 20 minutes long and 500MB in size.
What are the best alternatives to CaptionLK?
Captions Cut, CapCut, and Submagic for short-form video subtitles.
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