Auto Subtitle Generator
Upload your video, get accurate subtitles in seconds. AI listens to the audio and creates ready-to-use SRT subtitle files.
Drop your video here or click to browse
MP4, MOV, WebM, M4V — up to 2 minutes
Your subtitles (SRT):
Fast & accurate
Powered by OpenAI Whisper — the same tech behind ChatGPT voice.
Auto language detect
Works in English, Arabic, Spanish, French, and 90+ more.
Audio-only upload
Audio is extracted in your browser — your video never leaves your device.
What is Auto Subtitle Generator?
The Auto Subtitle Generator is a free AI-powered tool that automatically creates accurate subtitle files from your video or audio content. Upload your video or audio file, and the AI transcribes the speech and generates a downloadable SRT subtitle file ready to upload to YouTube, TikTok, Instagram, or any video platform. Adding subtitles to videos is no longer optional in 2026 — studies show that 85% of social media videos are watched on mute, and subtitled videos achieve significantly higher watch times and engagement than unsubtitled ones. MediaDrop's tool supports multiple languages and generates industry-standard SRT files compatible with all major platforms and video editing software.
How to use Auto Subtitle Generator
- Step 1: Upload your video or audio file — MP4, MOV, MP3, and WAV formats are supported.
- Step 2: Select the language of the speech in your video from the language dropdown.
- Step 3: Click Generate Subtitles and wait for the AI to transcribe your content.
- Step 4: Review the generated subtitles in the preview panel and check for any errors.
- Step 5: Download the .srt subtitle file to your device.
- Step 6: Upload the .srt file to your video platform — YouTube, TikTok, Instagram, or your video editing software.
Tips for better results
- Use clean audio for best accuracy. The AI transcription works best with clear speech, minimal background noise, and one speaker at a time. Noisy recordings or heavy accents may produce less accurate results.
- Review and edit before publishing. Always review AI-generated subtitles before uploading. Check for proper nouns, technical terms, and words that sound similar but have different meanings.
- Use the Subtitle Formatter to clean your SRT. After generating, run the .srt file through our Subtitle Formatter tool to remove any formatting issues before uploading.
- Break long lines into two shorter ones. Best practice is 42 characters per line, two lines maximum per cue. Long lines are hard to read while watching video.
- Check timing synchronisation. If the subtitles are consistently early or late, the audio may have started after the video. Adjust timestamps in a subtitle editor if needed.
- Translate to multiple languages. Once you have the English SRT, use AI translation tools to create versions in Spanish, Arabic, French, or other languages to reach global audiences.
Frequently Asked Questions
How accurate is the auto subtitle generator?
For clear English speech with minimal background noise, accuracy is typically 90-95%. Accuracy varies by language, accent, audio quality, and speaking speed. Always review and correct the output before publishing.
What languages are supported?
The tool supports English, Arabic, Spanish, French, German, Portuguese, Italian, Japanese, Korean, Chinese, and more. Select your language from the dropdown for best results.
What file formats does it output?
The Auto Subtitle Generator outputs standard .srt (SubRip Text) files — the most widely supported subtitle format for YouTube, TikTok, Instagram, Vimeo, and video editing software.
What video and audio formats are supported?
You can upload MP4, MOV, WebM, MP3, WAV, and M4A files. For best results, ensure the audio track is clear and the file is under 15MB.
Is my video uploaded to a server?
Yes — the audio is sent to the AI transcription service for processing. It is processed securely and not stored permanently. For sensitive content, consider this before uploading.