Subtitle Translator
Translate SRT subtitle files
Video
Long Video to Shorts Studio
Convert owned long videos into 9:16 Shorts: upload a file or paste a supported link, set exact timestamps, add captions, reframe and export.
Enable JavaScript to use the interactive controls. Your guide and examples are available below.
Features
- Import a local video or an HTTPS direct video link with CORS access (up to 512 MB for URL imports)
- Preview an official YouTube watch link with chosen start/end times (source download not included)
- Enter HH:MM:SS or seconds, or mark start/end at the playhead
- Choose 3–180-second clips with an interactive timeline scrubber
- Rank caption-led highlights from optional SRT/VTT subtitles
- Fill, fit or blurred-background vertical framing with horizontal focus
- Add opening headline and burn in timed captions
- Export 9:16 MP4 where browser-supported, otherwise WebM
About Long Video to Shorts Studio
Edit your own long-form video into YouTube Shorts-style vertical clips without uploading footage to the Pearto server.
How to use it
- Upload a video file or paste an HTTPS direct video URL. Host CORS rules must allow importing the video. For YouTube watch links, use the official embedded preview and obtain your own uploaded source file from YouTube Studio before exporting.
- Enter start and end as HH:MM:SS, MM:SS, or seconds, or use Set start/end at playhead. Preview your cut.
- Optionally paste/upload timed SRT or VTT captions for burned-in captions and transparent highlight suggestions.
- Choose fill, blurred background or fit, adjust framing and headline, then download MP4 where browser-supported or WebM.
Supported formats
- MP4, WebM or another video format supported by your browser
- SRT or VTT timed subtitles (optional)
- Vertical 9:16 output: MP4 if supported, otherwise WebM
Processing and limitations
All supplied video and subtitle processing stays inside this browser session. The editor uses the browser canvas, Web Audio and MediaRecorder APIs for local export.
Only directly downloadable HTTPS video-file URLs with appropriate CORS headers can be imported; no server-side proxy, YouTube stream extraction, DRM bypass or generic webpage download is provided. Browser link imports are limited to 512 MB. YouTube links use an official watch preview only; obtain your own uploaded video through YouTube Studio for export. Local files are subject to browser codecs and available CPU/memory. Export runs in real time, with MP4 only when MediaRecorder supports it. Text-based highlight ranking is heuristic, not automatic transcription or a viral prediction.
Questions and answers
Can I paste a YouTube video URL?
Yes. A YouTube watch/Shorts link opens an official embedded preview at your selected timestamps. It does not expose the underlying download file. For videos you uploaded, use YouTube Studio to download your own file, then upload it to Pearto for rendering.
Can I paste other video URLs?
Yes, when the link points directly to an HTTPS video file and its host allows cross-origin reads. Regular pages, streaming playlists, protected files or hosts blocking CORS cannot be imported into the local editor.
Can I cut at an exact time?
Yes. Enter HH:MM:SS, MM:SS, decimal seconds or click Set start/end at playhead. You can also scrub the timeline.
Does the tool store my media?
The tool processes media in your browser and does not upload it to the Pearto server. A direct URL import is fetched from its source host into your browser.
Related tools
Subtitle Format Converter
Convert subtitles between formats; Convert multiple subtitle files in a batch
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