mainwindow_2.ui

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>MainWindow</class>
 <widget class="QMainWindow" name="MainWindow">
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>1084</width>
    <height>600</height>
   </rect>
  </property>
  <property name="windowTitle">
   <string>MainWindow</string>
  </property>
  <property name="styleSheet">
   <string notr="true">QMainWindow {
	background-color: #f0f0f0;
}

QLabel {
	font-size: 24px;
	color: #333333;
}</string>
  </property>
  <widget class="QWidget" name="centralwidget">
   <property name="styleSheet">
    <string notr="true">QPushButton {
    background-color: #4CAF50;
    color: white;
    font-size: 24px;
    border: none;
    padding: 24px 36px;
    border-radius: 15px;
}
QPushButton:pressed {
    background-color: #45a049;
}
QPushButton:disabled {
    background-color: #cccccc;
    color: #666666;
}</string>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout">
    <item>
     <widget class="QLabel" name="lbl_video">
      <property name="sizePolicy">
       <sizepolicy hsizetype="Preferred" vsizetype="Expanding">
        <horstretch>0</horstretch>
        <verstretch>0</verstretch>
       </sizepolicy>
      </property>
      <property name="text">
       <string/>
      </property>
      <property name="textFormat">
       <enum>Qt::PlainText</enum>
      </property>
      <property name="alignment">
       <set>Qt::AlignCenter</set>
      </property>
     </widget>
    </item>
    <item>
     <widget class="QLabel" name="lbl_output">
      <property name="text">
       <string/>
      </property>
     </widget>
    </item>
    <item>
     <layout class="QHBoxLayout" name="horizontalLayout">
      <item>
       <widget class="QPushButton" name="btn_start">
        <property name="text">
         <string>INICIAR</string>
        </property>
       </widget>
      </item>
      <item>
       <widget class="QPushButton" name="btn_stop">
        <property name="enabled">
         <bool>false</bool>
        </property>
        <property name="text">
         <string>PARAR</string>
        </property>
       </widget>
      </item>
     </layout>
    </item>
   </layout>
  </widget>
 </widget>
 <resources/>
 <connections/>
</ui>