How to turn a lecture, a stream or any long video into a set of vertical clips with captions — what the system looks for, how long it takes, and what you can change.
A long video usually contains a handful of moments that stand on their own. The system looks for them, cuts them out, reframes them vertically and adds captions — so you do not have to watch the whole thing to find them.
After a live broadcast — if you switched the option on in settings, clips are produced automatically when a broadcast ends and are waiting on the Clips page.
From a video in Storage — open Storage and press the button on the video's card. The video needs to be at least ten minutes long; below that there is not enough material to choose from.
The choice is neither random nor an even division of the running time:
Each clip usually comes out between one minute and ninety seconds, depending on the intensity setting you chose.
For each clip:
On the videos measured here, a set of five clips takes about twenty minutes. Most of that is downloading the source, transcribing it, and rendering each clip.
While it runs, a progress indicator appears on the Home and Storage pages: how many clips are ready out of how many, and an estimated percentage. If something fails it says what failed rather than leaving you waiting.
Pressing again while the first set is still running does not start a second job. It joins the queue: the current set finishes, then a new set starts — from different passages of the same video. You can repeat that as often as you like.
The second set is faster, because the source has already been fetched and does not need downloading again.
Every clip opens in the editor, where you can correct captions, move the crop, change the template, add or remove music, and export again.
If you do not like a clip, delete it. Deleting removes the files from storage too, not just the row from the list.
There is nothing to choose from. In a short video every passage is a large fraction of the whole, and the result would be an arbitrary cut rather than a moment that stands alone. For cutting a short video by hand, use the editor.
Yes, in settings. You can also choose a preferred length and an intensity level that affects how long the clips run.
Yes, on the Clips page, until you delete them. Deleting removes the actual files.
You get five sets, one after another, each from different passages — not five parallel jobs producing the same thing.
Submagic turns an uploaded video into a captioned vertical short, quickly and well. Here it is next to a clip engine that sits at the end of a studio.
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