The Sims 4 offers 3 video resolutions: Small (320×240), Medium (640×480) and Large (1024×768). There is one problem though: none of these Video sizes are not recognizable as High Definition.
To make your video files bigger, you’ll need to adjust a small detail in The Sims 4’s Game Files.
To edit your video size, open the folder where you install your Origin Games and then go to The Sims 4 > Game > Bin > res. In the ”res” folder, you’ll have to open a configuration setting file called ”VideoRecording”.
To make a video larger, simply rename the ”Large =” section from 1024 to any bigger resolution you want.
After your’re done with editing, go to File and select Save.
Here’s a tip: if you plan to The Sims 4 Videos on YouTube, it’s recommended that you set the resolution to 1280 (1280×720 – 720p) or 1920 (1920×1080 – 1080p).