Convert MTS to text with AI. Upload a .mts file and get an accurate transcript with timestamps and speakers. Export TXT, DOCX or SRT. Free to try.
Free for recordings up to 1 hour and 1 GB. Longer files need a paid plan.
How It Works
Drop an audio or video file — MP4, MOV, MP3, WAV, M4A and more. The language is detected automatically.
AssemblyAI transcribes every word with exact timings — usually a fraction of the recording's length.
Copy the text or download SRT, VTT and TXT files.
The MTS to Text is a free online tool from ShortsHero: transcribe .mts files in 99 languages. AssemblyAI speech recognition does the work — a 5-minute recording usually comes back in under 30 seconds. It is free for files up to 1 hour with no watermark; longer recordings need a paid plan.
Free transcription covers files up to 1 hour. If your recording is longer, a paid plan lifts the limit — or trim it into parts and run each one.
Why Use This Tool
Every word carries its start and end time, so subtitles line up with the speech.
The formats YouTube, Premiere, Resolve, CapCut and every major player accept.
Filter the transcript on the page to find any word and jump to its timestamp.
Full recordings, not a one-minute sample. Paid plans lift the length limit.
The spoken language is detected automatically.
Use the files anywhere — the transcript and subtitles are yours.
Yes. Files up to 1 hour long are free, with no watermark and no account needed. Recordings longer than 1 hour need a paid ShortsHero plan.
MP4, MOV, WebM, MKV, MP3, WAV, M4A, AAC, OGG, FLAC and most other audio and video formats, up to 1 GB. For a long video, uploading just the audio is faster.
Yes. Download the SRT and open it in our free online SRT editor, or in any video editor, to fix a word or a timing.
Usually well under the length of the recording — a 10-minute file is typically done in about a minute.
ShortsHero turns long videos into short vertical clips with AI moment detection, face tracking and animated captions — and has free tools for subtitles, transcripts and video formats.
The same transcription powers ShortsHero's clip maker: it finds the strongest moments, reframes them to vertical and adds word-by-word captions in 36 styles.
Try the clip maker freeFree to start · No credit card required
Keep Going
Get the lyrics of a song from the audio file. AI separates the vocals and writes out the words with timestamps. Works best on clear vocals.
Edit a transcript while the audio plays. Click any word to hear it, fix mistakes, rename speakers, then export TXT, DOCX or SRT with timing kept.
Transcribe a whole YouTube playlist at once. Paste the link and get a transcript for every video, downloadable together as TXT or one combined file.
Transcribe many audio and video files at once. Drop in a folder, pick a language, and download every transcript as TXT, DOCX or SRT in one zip.
Transcribe long recordings in one upload: lectures, court sessions, livestreams and audiobooks up to many hours, with no need to split the file first.
Transcribe stereo or multichannel recordings with each channel as its own speaker. Perfect for call centres and podcasts recorded on separate tracks.