Long video in, short clips out
Subtitle a video automatically
Before you start: MomentCut works from the video file (MP4, MOV or WebM, up to 60 minutes), uploaded from your device (up to 30 GB, 20 GB on the free trial) or through a direct link to that file (up to 2 GB). YouTube, Vimeo or other platform links are not accepted.
Subtitles are not only an accessibility feature. They are what holds a viewer who is watching with the sound off, on a commute or in a waiting room, which is to say most of the people who will ever see your clip.
Transcribe, then correct
MomentCut transcribes the audio and splits the text into cues aligned to speech. Automatic transcription is strong on clean audio, but it always stumbles on the same things: names, brands, acronyms, trade jargon.
That is why correction happens before export, cue by cue. Two minutes of proofreading is usually enough, and it saves you the comment that points at the typo instead of the point.
Burned in, or as a separate file
Burned-in subtitles are baked into the picture: they show everywhere, regardless of the viewer’s settings or the platform. For short form, that is the default choice.
MomentCut also gives you an SRT file for each clip, which is useful if you want the text translated or prefer to upload subtitles separately on the platform.
Style matters
Several styles are available, from a plain caption at the bottom of the frame to word-by-word display that follows the voice. The second holds attention better on short-form platforms; the first ages better. You can change font, colour and size, and see the result before exporting.
- 6 subtitle presets, including word-by-word sync (karaoke)
- Font, colour and position options
- Vertical preview that matches the final render
- Downloadable .srt alongside the video
Step by step: clean captions in five steps
Upload your video
On “Your video”, click “Choose a video” (MP4, MOV or WebM, 30 GB and 60 minutes at most; 20 GB on the free trial). The transcript is made on the server from that file.
Set the spoken language
In “Settings”, “Spoken language” is set to “Detect automatically”. If the video mixes two languages or opens with a music intro, pick the language yourself for a safer transcript. Then click “Next: find my clips”.
Pick a style
Under “Style and framing”, the “Subtitle preset” offers, among others, “Classic · dark background”, “Karaoke · word by word” and “Minimal · light text”. The advanced settings let you change the style, the font and the “Subtitle color” (white, light green or yellow). The vertical preview updates right away.
Fix the text
Open “Edit subtitles” under the preview: every segment is timed and editable. Check names, brands, acronyms and numbers first. The “Highlighted words” picked by the AI stand out in colour.
Export the video and the .srt file
Click “Create video file” for the clip with burned-in captions, then “Subtitles .srt” for the text file. Both include your fixes.
Which style for which use
- “Karaoke · word by word” for fast speech or a conversation: the eye follows the spoken word.
- “Classic · dark background” for a busy or bright picture: the box keeps the text readable.
- “Minimal · light text” for sober content, training or corporate.
- A yellow or light green accent stands out better than white on a bright set.
Limits to know
- Accepted videos: MP4, MOV and WebM, 30 GB (20 GB on the free trial) and 60 minutes at most. Minutes are counted on the length of the source video, not on the number of captioned clips.
- The transcript keeps the spoken language; it does not translate. Ten spoken languages are recognised, including English, French, Spanish and Italian.
- Quality depends on the audio: loud music, overlapping voices or a distant mic mean more fixes.
- Burned-in captions are part of the picture: to change them after export, fix the text and export again.
- On the free plan, the 3 exports carry a watermark; the .srt file does not.
Upload a video and watch the captions lock onto the voice.
Common questions
How accurate is it?
On clear speech and a clean recording, transcription is accurate in the large majority of cases. Errors cluster around proper nouns and specialist vocabulary, which take seconds to fix before export.
Are subtitles translated?
Transcription renders the language spoken in the video. To publish in another language, export the SRT file and have it translated.
Can I edit the subtitle text?
Yes, cue by cue, right in the studio and before export. The vertical preview shows the result straight away, and the clip’s .srt file includes your corrections.