Ask HN: Unsure which image extraction techniques to utilise

For a side project i’m taking a look at how to extract information from Apex Legends (for starters) game play videos. Example screenshot:

https://www.gameprime.org/wp-content/uploads/2019/02/gp-apexlegends-6.jpg

There is a log on top right corner and player status on bottom left corner (health/shields).

Id like to:

- extract <player A username> killed <player B username> with <weapon name> (at time mm:ss) from log, and other information displayed on that log

- from player health extract health/shields percentage (at what time)

Also detect game start/end screens and possibly extract info from them like which characters compose the current player squads.

Apart from OCR, what kind or specific techniques should i learn to implement this ?