This is an improved and simplified version of pjw29's OBS Rec Rename Python script, that, similarly to NVidia ShadowPlay, allows OBS to rename and organize into folders video recordings based on the window title on focus whenever a replay buffer or a recording is saved, unlike from the previous version where it periodically checked for new clips.

Python 3.6 (3.6.8 recommended), as well as pywin32 and psutil libraries which can be installed via command line:

pip install pywin32
pip install psutil

Python can now be loaded in OBS by Tools > Scripts > Python Settings and choosing Python36 path.

After the previous indications the actiual script can be now installed. It doesn't need to be placed in a specific directory, for convenience the scripts folder located at C:\Program Files\obs-studio\data\obs-plugins\frontend-tools\scripts\obs-rec-organizer is ideal. It can be loaded into OBS by Tools > Scripts hit the "+" sign and search for OBS-RecOrganizer.py from the previous path.

From OBS' Scripts window choose your main recordings folder by clicking Browse and write in the Extension box your videos extension of without the "." sign.

Within the scripts are included two cfg files named DesktopOverride.cfg and FullscreenOverride.cfg, you can write the executable name in them to respectively override a windowed game targetting it correctly or to tweak a fullscreen program in "Desktop" recording.

1. If you experience any problems installing the libraries, the first thing I recommend to do is update pip with:

python -m pip install --upgrade pip

2. If Pywin32 gives you any troubles, first uninstall it with pip uninstall pywin32 and then download it from here choosing py36 version.

3. Recordings not organized into subfolder or not renamed: it can occur in the first/second recording or buffer replay, but no more further because the script only needed to create its cache.