Keptbits

Keptbits takes a long recording, from podcast episodes to multi-hour streams, and cuts it into finished short clips with captions burned in. You paste a link or upload a file in MP4, MOV, MKV or MP3 format, up to four hours long, and tell it whether the video is talking content or a stream. Clips can be exported at 9:16, 1:1 or 16:9.

For talking content such as podcasts, interviews and lectures, it makes a word-level transcript with speaker separation and scores each candidate moment on whether it opens and resolves within itself, so clips do not depend on earlier context. Auto-reframe follows whoever is speaking. For streams, it also measures audio level and keeps moments where the sound rises above the video's own baseline, such as a shout or a cheer. Cut points land on real word timings.

The editor adds caption styles word by word, silence removal, transition effects and color grading. Keptbits is a hosted web service with a free plan limited to three clips per run, up to thirty seconds each and a small watermark, plus a Pro plan that removes those limits.