Sadly kfrm.sh just displayed if frame was keyframe or not, without timestamps but this forum post provided some ideas https://forum.videohelp.com/threads/359491-Just-an-idea-ffmpeg-based-key-fra... ~ $ ffprobe -hide_banner -skip_frame nokey -show_frames -select_streams v 20200101_000443A.mp4 | grep best_effort Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '20200101_000443A.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2mp41 Duration: 00:00:13.27, start: 0.000000, bitrate: 23664 kb/s Stream #0:0[0x1](eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt470bg/bt470bg/smpte170m, progressive), 3840x2160, 23087 kb/s, 30.08 fps, 30 tbr, 1k tbn (default) Metadata: handler_name : VideoHandler vendor_id : [0][0][0][0] Stream #0:1[0x2](eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 2 kb/s (default) Metadata: handler_name : SoundHandler vendor_id : [0][0][0][0] best_effort_timestamp=0 best_effort_timestamp_time=0.000000 best_effort_timestamp=1433 best_effort_timestamp_time=1.433000 best_effort_timestamp=2799 best_effort_timestamp_time=2.799000 best_effort_timestamp=4166 best_effort_timestamp_time=4.166000 best_effort_timestamp=5533 best_effort_timestamp_time=5.533000 best_effort_timestamp=6899 best_effort_timestamp_time=6.899000 best_effort_timestamp=8266 best_effort_timestamp_time=8.266000 best_effort_timestamp=9633 best_effort_timestamp_time=9.633000 best_effort_timestamp=10999 best_effort_timestamp_time=10.999000 best_effort_timestamp=12366 best_effort_timestamp_time=12.366000 ~ $ so it gives you some timelist ... turning it into cut-friendly format probably was done somehow )