JPEG Quality -q:v
2 (best) → 31 (worst)
Frequency fps=
fps
1 – 60 frames/sec
Max Duration -t
sec
1 – 3600 seconds
Threading
Multi may not work on some browsers
ffmpeg -i input.mp4 \
-vf scale=320:240:force_original_aspect_ratio=increase,crop=320:240,setsar=1:1,fps=15 \
-t 00:00:30 \
-vcodec mjpeg -q:v 24 -an \
output.mjpeg
Note: FFmpeg WASM (~30 MB) is loaded on first launch.
100% local processing, no files sent to a server.