Question: template for video chunks (time codes) classification

### Intro

I have a large dataset of gameplay videos, which I would like to classify according to the game state i.e. in-game, menu, lose, win, ad and etc.

### Problem

My videos usually have 3 min in length and game state changes during the video ~50 times, so it's not really convenient to split them on 50 different videos

### Ideal solution

It will be nice to allow classifying each frames by time codes for example:

```
00:00 menu # all frames till next timecode are considered as 'menu'
00:05 loading # all frames till next timecode are considered as 'loading'
00:06 play # all frames till next timecode are considered as 'play'
01:23 win # all frames till end are considered as 'menu'
```

Or maybe there is an approach for annotating individual frames

Any other suggestions to achieve the goal, classify chunks of the video are appreciated