Testing the supported resolutions of Unity's WebCamTexture.

Galaxy.txt

Camera2: Hardware level: 1
06-02 10:49:07.625 21849 21865 I Unity   : Camera2: FrameSize 4032 x 3024 [2.5824869781268642]
06-02 10:49:07.625 21849 21865 I Unity   : Camera2: FrameSize 4032 x 2268 [2.2948049056750834]
06-02 10:49:07.625 21849 21865 I Unity   : Camera2: FrameSize 3984 x 2988 [2.558534596033433]
06-02 10:49:07.625 21849 21865 I Unity   : Camera2: FrameSize 3264 x 2448 [2.1598687907924505]
06-02 10:49:07.626 21849 21865 I Unity   : Camera2: FrameSize 3264 x 1836 [1.8721867183406695]
06-02 10:49:07.626 21849 21865 I Unity   : Camera2: FrameSize 3024 x 3024 [2.2948049056750834]
06-02 10:49:07.626 21849 21865 I Unity   : Camera2: FrameSize 2976 x 2976 [2.2628042229822007]
06-02 10:49:07.626 21849 21865 I Unity   : Camera2: FrameSize 2880 x 2160 [1.9095425048844386]
06-02 10:49:07.626 21849 21865 I Unity   : Camera2: FrameSize 2592 x 1944 [1.698821473568786]
06-02 10:49:07.627 21849 21865 I Unity   : Camera2: FrameSize 2560 x 1920 [1.6739764335716716]
06-02 10:49:07.627 21849 21865 I Unity   : Camera2: FrameSize 2560 x 1440 [1.3862943611198906]
06-02 10:49:07.627 21849 21865 I Unity   : Camera2: FrameSize 2560 x 1080 [1.0986122886681098]
06-02 10:49:07.627 21849 21865 I Unity   : Camera2: FrameSize 2160 x 2160 [1.6218604324326575]
06-02 10:49:07.627 21849 21865 I Unity   : Camera2: FrameSize 2048 x 1536 [1.2276893309432522]
06-02 10:49:07.628 21849 21865 I Unity   : Camera2: FrameSize 2048 x 1152 [0.9400072584914712]
06-02 10:49:07.628 21849 21865 I Unity   : Camera2: FrameSize 1936 x 1936 [1.402891966749281]
06-02 10:49:07.628 21849 21865 I Unity   : Camera2: FrameSize 1920 x 1080 [0.8109302162163289]
06-02 10:49:07.628 21849 21865 I Unity   : Camera2: FrameSize 1440 x 1080 [0.523248143764548]
06-02 10:49:07.629 21849 21865 I Unity   : Camera2: FrameSize 1280 x 960 [0.2876820724517809]
06-02 10:49:07.629 21849 21865 I Unity   : Camera2: FrameSize 1280 x 720 [0.0]
06-02 10:49:07.629 21849 21865 I Unity   : Camera2: FrameSize 960 x 720 [0.28768207245178085]
06-02 10:49:07.629 21849 21865 I Unity   : Camera2: FrameSize 720 x 480 [0.9808292530117262]
06-02 10:49:07.629 21849 21865 I Unity   : Camera2: FrameSize 640 x 480 [1.0986122886681096]
06-02 10:49:07.630 21849 21865 I Unity   : Camera2: FrameSize 320 x 240 [2.484906649788]
06-02 10:49:07.630 21849 21865 I Unity   : Camera2: FrameSize 176 x 144 [3.593569274309611]
06-02 10:49:07.634 21849 21865 I Unity   : Camera2: FPS requested: 24 set: 24
06-02 10:49:08.290 21849 21906 I Unity   : Camera2: CameraDevice opened.
06-02 10:49:08.307 21849 21865 I Unity   : Camera2: Start preview.
06-02 10:49:08.325 21849 21906 I Unity   : Camera2: CaptureSession is configured.
06-02 10:49:08.587 21849 21865 I Unity   : Webcam size: 1280x720

WebCam.cs

using UnityEngine;

public class WebCam : MonoBehaviour {
    
    void Start () {
        var webcamTex = new WebCamTexture(1280, 720);
        webcamTex.Play();
        Debug.Log($"Webcam size: {webcamTex.width}x{webcamTex.height}");
    }
}