Check supported resolution from unity

VideoSupported.cs

using UnityEngine;
using System.Runtime.InteropServices;

namespace VRKit
{
    public static class VideoSupported
    {
        public static bool IsSupported(int width, int height, float framerate)
        {
#if UNITY_EDITOR
            return true;
#elif UNITY_IPHONE
			return isVideoSupportedFormat(width, height, framerate);
#elif UNITY_ANDROID
			AndroidJavaObject jo = new AndroidJavaObject("asus4.videosupportedplugin.VideoSupportedPlugin");
			return jo.CallStatic<bool>("isVideoSupportedFormat", width, height, framerate);
#else
			Debug.LogError("Not supported platform");
            return false;
#endif
        }

        public static bool Is4KSupported()
        {
            return IsSupported(3840, 1920, 29.97f);
        }

#if UNITY_IPHONE
		[DllImport("__Internal")]
		private static extern bool isVideoSupportedFormat(int width, int heigt, float framerate);
#endif
    }
}

VideoSupportPlugin.java

package asus4.videosupportedplugin;

import android.media.MediaCodecInfo;
import android.media.MediaCodecList;

/**
 * Created by ibu on 2017/03/12.
 */

public final class VideoSupportedPlugin {
    public static boolean isVideoSupportedFormat(int width, int height, float framerate) {

        MediaCodecList allCodecs = new MediaCodecList(MediaCodecList.ALL_CODECS);
        MediaCodecInfo[] infos = allCodecs.getCodecInfos();

        for (MediaCodecInfo info : infos) {
            for (String type : info.getSupportedTypes()) {
                MediaCodecInfo.CodecCapabilities caps = info.getCapabilitiesForType(type);
                MediaCodecInfo.VideoCapabilities vcaps = caps.getVideoCapabilities();
                if (vcaps == null) {
                    continue;
                }
                if (vcaps.areSizeAndRateSupported(width, height, framerate)) {
                    return true;
                }
            }
        }
        return false;
    }
}

VideoSupportPlugin.mm

//
//  VideoSupportPlugin.m
//  VideoSupportiOS
//
//  Created by Koki Ibukuro on 2017/03/12.
//  Copyright © 2017 Koki Ibukuro. All rights reserved.
//

#import <AVFoundation/AVFoundation.h>


extern "C" {
    BOOL isVideoSupportedFormat(int width, int height, float framerate) {
        AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
        for(AVCaptureDeviceFormat *format in device.formats) {
            CMVideoDimensions dim = format.highResolutionStillImageDimensions;
            if(dim.width < width || dim.height < height)
            {
                continue;
            }
            for(AVFrameRateRange *range in format.videoSupportedFrameRateRanges) {
                // NSLog(@"\t %f - %f", range.minFrameRate, range.maxFrameRate);
                if(range.minFrameRate <= framerate && framerate <= range.maxFrameRate){
                    return YES;
                }
            }
        }
        return NO;
    }
}