The npm package ffmpeg.js a pretty powerful video encoder that runs in the browser. It can encode a sequence of images to a webM movie. The specific package is probable (ffmpeg-worker-webm.js).
See: https://stackoverflow.com/questions/40560255/ffmpeg-jpeg-stream-to-webm-only-creates-a-file-webm-with-1-frame-snapshot-or
Also: https://github.com/spite/ccapture.js/
The npm package ffmpeg.js a pretty powerful video encoder that runs in the browser. It can encode a sequence of images to a webM movie. The specific package is probable (ffmpeg-worker-webm.js).
See: https://stackoverflow.com/questions/40560255/ffmpeg-jpeg-stream-to-webm-only-creates-a-file-webm-with-1-frame-snapshot-or
Also: https://github.com/spite/ccapture.js/