This video I saw earlier, 10:00~15:00 was interesting.
"さっき見た動画10分から15分の所が面白かった。"
- This video I saw earlier, 10:00~15:00 was interesting.
- From 10 minutes to 15 minutes in this video I just watched was interesting.
- Watch from 10 minutes in to 15 minutes in this video I just watched. It was interesting.
The video I just watched was interesting from 10:00 to 15:00
The video I just watched
（私が）さっき見た動画
先ほど見たならjust watchedと言います。一時間前とかなら他の回答者がおっしゃったようにearlierと言います。
The video I just watched was interesting from 10:00 to 15:00
さっき見た動画10分から15分の所が面白かった。
もし話すときに使うならtimestamp ten minutes to fifteen minutesで表現できますね。
ご参考になれば幸いです！
アメリカ合衆国 
