Steps
Cut the part you want (optional)
A Short can be up to 3 minutes. Set the start and end with the player, convert and download. Skip this step to use the whole video.
Caption the speech
Whisper runs on your device and writes timed captions from the speech. Pick the language if it is not detected, then send the captions and the video on.
Fix the words (optional)
Play the video and correct names and misheard words. The word timings from the previous step are kept for every caption whose word count you leave the same.
Follow the speaker (optional)
The video is checked five times a second for faces. The largest face is followed, and the frame only switches to another person after they have been the main face for a second. The crop holds still while the speaker stays near the middle, glides when they move away and cuts cleanly when the picture changes.
Workflow step
Make the Short
Choose the caption style (bold word by word, a black box, or an outline), how many words show at a time, the size, the height and the highlight colour. Keep captions above the bottom fifth, where the apps put their buttons. Then make the Short and download the MP4.
Workflow step
FAQ
Is there a watermark?
No. The video is yours, with no watermark and no account.
How long can the video be?
Any length works for the captions and the crop, but a Short is up to 3 minutes. On phones, keep clips under about 3 minutes, because the whole video is held in memory while it is encoded.
What if there is no face in the video?
Skip the framing step and the crop stays in the centre, or choose a fixed position, or keep the whole frame with blurred bars above and below.