In FFMPEG I am using the following command to extract frames from a video:
ffmpeg -ss "00:47:13" -i "Video.webm" -vf select="gte(n, 90000)" -vframes 5000 "frames_%d.jpg"
But for me the Seeking either doesn't happen or takes huge additional time to seek. But isn't -ss used to fast seek to a position?
Time to extract 5000 Frames:
Time without seeking: 337 Seconds
Time with seeking: 379 Seconds
Is there a case in which the -ss doesn't work as it should?