If you finish your match and the data is stored at Riot’s servers, yes. If you abandon the match before the information is stored in Riot’s servers, you will have to make a manual analysis. So just, load your video and perform a manual analysis via the button tab. You can tag the actions you want: Champion Kills, Tower, Inhibitors, Dragons, Barons, Ganks, Teamfights, etc. If you tag your events manually, you’ll still be able to view them in the timeline and the event list.