[BigBalli]

If you place -ss after the input file it will take longer. For true seek place -ss before -i.

[rainbowzootsuit]

It will only approximately seek to a te using GOP i-frames if you do -ss before -i which in MPEG2 is generally ~15frames=0.5s. But a GOP can be pretty long, like 30s, in MPEG4.

https://ottverse.com/trim-cut-video-using-start-endtime-reen...