Karaoke Word-by-Word Highlight
Powered by character-level speech timestamps. Choose between Karaoke active-word fill, Pop bounce emphasis, or clean Minimal cards that keep viewers glued to your Reels and Shorts.
Just Launched on Google Play
Video · AI Captions · Everyone
AI Captions for Reels & Shorts. Karaoke Word Highlight in 100+ Languages.
Trim your clip, generate character-accurate subtitles in seconds, style with custom .TTF/.OTF fonts, and burn the captions straight into your MP4. 100% free, no login, no subscription.
100+
Languages & Auto-detect
Karaoke
Character-level word sync
MP4 + SRT
Hardware burn-in export
₹0 / Free
No login · No paywall
0:14 / 0:28 · 1080p
● Live Preview
AI
captions
for
Reels
&
Shorts
burned
into
MP4.
Try Language Script
Try Caption Style
// 01 · Built for Creators
Everything you need to ship viral vertical videos on Android
Most mobile caption apps lock basic exports behind expensive monthly subscriptions or mangle Indian regional scripts. Auto Video Subtitle Generator gives you a complete five-tab studio (Cut · Edit · Generate · Style · Text · Export) for free.
Dual-Engine Cloud AI (100+ Languages)
Combines ElevenLabs Scribe v2 with automatic Groq Whisper Large-v3-Turbo failover. Delivers native Bengali (বাংলা), Hindi (हिन्दी), English, Tamil, Telugu, and 95+ languages without script corruption.
Custom .TTF & .OTF Font Import
Upload your own brand or regional typography directly from your phone storage. Control font size, words per line, 5 vertical positions (Top to Bottom), background shapes (Rounded, Box, Band, Word), and shadow depth.
Precision Trimmer & Colour Grading
Import videos up to 3 minutes, drag handles to keep the punchiest 30-second segment, Save Clip to gallery, and dial in live Saturation, Brightness, and Contrast before burning subtitles.
Tap-to-Seek Interactive Line Editor
Every transcribed cue is editable. Fix names or slang in seconds, tap any timestamp to jump the video player to that exact moment, and rely on automatic local project saving so you never lose a draft.
Hardware MP4 Burn-in & Free No-Watermark
Bakes styled subtitles directly into the H.264 MP4 video stream (with automatic .SRT fallback on older hardware). Remove the watermark completely free by watching one short rewarded ad—zero subscription required.
// 02 · Four-Step Workflow
From raw phone clip to captioned MP4 in under 60 seconds
Designed for one-handed editing on Android phones with zero account setup.
STEP 01 · IMPORT & CUT
Pick & Trim Video
Select any video from your gallery. Use the built-in trimmer to cut dead air at the start or end and adjust colour saturation, brightness, and contrast.
STEP 02 · GENERATE
Transcribe with AI
Pick your spoken language (or leave on Auto-detect) and tap Add Subtitle. On-device 16 kHz audio extraction feeds our low-latency cloud AI chain.
STEP 03 · STYLE & EDIT
Style Karaoke & Text
Choose Karaoke, Pop, or Minimal. Import custom .ttf/.otf fonts, tweak colours and opacity, and tap any line to refine words.
STEP 04 · EXPORT
Burn into MP4 & Share
Tap Burn & Export to render the final MP4 straight to your gallery, ready for Instagram Reels, YouTube Shorts, TikTok, or WhatsApp.
// 03 · Multilingual Accuracy
First-class Indian & global language recognition
Built in India for creators worldwide. Unlike generic Whisper wrappers that output broken characters or wrong scripts, our Scribe v2 + Whisper v3 pipeline with built-in Indic script safeguards keeps every syllable authentic.
Bengaliবাংলা · bn
Hindiहिन्दी · hi
EnglishGlobal / IN · en
Marathiमराठी · mr
Tamilதமிழ் · ta
Teluguతెలుగు · te
Gujaratiગુજરાતી · gu
Kannadaಕನ್ನಡ · kn
Malayalamമലയാളം · ml
Punjabiਪੰਜਾਬੀ · pa
Urduاردو · ur
SpanishEspañol · es
Arabicالعربية · ar
PortuguesePortuguês · pt
IndonesianBahasa · id
+ 85 MoreAuto-detect
// 04 · Honest Comparison
Why creators switch to Auto Video Subtitle Generator
No forced sign-ups, no ₹999/month paywalls just to export a 20-second Reel.
| Capability | Auto Video Subtitle Generator | Typical Subscription Caption Apps |
|---|---|---|
| Price to export MP4 | 100% Free (No subscription) | ₹499 – ₹1,499/month paywall |
| Remove watermark | Free via 1 optional rewarded ad | Paid Pro plan only |
| Account / Login required | None — works immediately | Mandatory Google/Email sign-in |
| Bengali & Indic script accuracy | Native script (Scribe v2 + Indic guard) | Often outputs wrong Devanagari/garbled text |
| Custom .TTF / .OTF font upload | Included free | Locked behind Pro tier |
| Built-in video trimmer & colour grading | Cut + Saturation / Brightness / Contrast | Partial or separate app required |
// 05 · Frequently Asked Questions
Everything you need to know
Is Auto Video Subtitle Generator really free with no subscription?
Yes. The app is completely free on Google Play with no sign-up, no trial trap, and no monthly subscription. You can burn subtitles into MP4 videos for free, and if you want a clean watermark-free export, simply watch one short rewarded ad right before exporting.
How accurate is it for Bengali, Hindi, and regional Indian languages?
Extremely accurate. We use a dual-engine cloud transcription pipeline led by ElevenLabs Scribe v2 (ranked #1 on Indian language benchmarks) with automatic failover to Groq Whisper Large-v3-Turbo, paired with an on-device Indic script verifier so Bengali (বাংলা), Hindi (हिन्दी), Marathi, Tamil, and Telugu render in their proper native script.
Can I use my own custom .TTF or .OTF fonts?
Yes. In the Style tab, tap Font → Upload a font file… and select any .ttf or .otf file from your phone. It previews live on your video and burns directly into the exported MP4.
Are the subtitles burned into the MP4 video or exported as .SRT?
By default, subtitles are hardware-encoded (burned in) directly into the MP4 video frames so your karaoke animations, custom fonts, and colours look identical on Instagram Reels, YouTube Shorts, TikTok, and WhatsApp. If your device lacks a compatible H.264 hardware encoder, the app gracefully exports a sidecar .srt subtitle file.
How is my privacy handled? Can I delete my data?
No personal account is required to use the app. Audio is extracted on your device as compact 16 kHz mono PCM solely for transcription and immediately discarded after the transcript returns. Read our full Privacy Policy or visit the Data Deletion page.
Ready to Caption Your Next Reel?
Download Auto Video Subtitle Generator on Google Play
Join creators making scroll-stopping Reels, YouTube Shorts, and educational clips with instant AI karaoke subtitles. Free, fast, and built by Bdeb Technology.