Laravel custom validation rules for videos. https://medium.com/@elizov/laravel-custom-validation-rules-for-videos-89cbc90c9d94

VideoUploadRequest.php

<?php

namespace App\Http\Requests;

use App\Rules\MaxVideoBitRate;
use Illuminate\Foundation\Http\FormRequest;

class VideoUploadRequest extends FormRequest
{
    /**
     * Determine if the user is authorized to make this request.
     *
     * @return bool
     */
    public function authorize()
    {
        return true;
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array
     */
    public function rules()
    {
        return [
            'video' => [
                'bail',
                'mimetypes:video/*',
                new MaxVideoBitRate(12000000),
            ],
        ];
    }
}