diff --git a/encoder/output.php b/encoder/output.php
index ea7cc80..63e2383 100755
--- a/encoder/output.php
+++ b/encoder/output.php
@@ -21,7 +21,7 @@ $defaults = [
   'rtmp1_multiple' => [],
   'srt_multiple'  => [],
   'rtmp0' => [
-    'common_backend'=>'use_common_backend',
+    'common_backend' => 'use_common_backend',
     'resolution' => '1920x1080',
     'data_rate' => '6M',
     'framerate' => '30',
@@ -32,7 +32,7 @@ $defaults = [
     'audio_sample_rate' => '48000'
   ],
   'rtmp1' => [
-    'common_backend'=>'transcode',
+    'common_backend' => 'transcode',
     'resolution' => '720x576',
     'data_rate' => '1.5M',
     'framerate' => '25',
@@ -43,7 +43,7 @@ $defaults = [
     'audio_sample_rate' => '48000'
   ],
   'udp0' => [
-    'common_backend'=>'use_common_backend',
+    'common_backend' => 'use_common_backend',
     'udp' => 'udp://@224.1.1.1:8001',
     'formate' => 'h264_qsv',
     'resolution' => '1280x720',
@@ -57,7 +57,7 @@ $defaults = [
     'audio_sample_rate' => '48000'
   ],
   'udp1' => [
-    'common_backend'=>'transcode',
+    'common_backend' => 'transcode',
     'udp' => 'udp://@224.1.1.1:8001',
     'formate' => 'h264_qsv',
     'resolution' => '720x576',
@@ -71,7 +71,7 @@ $defaults = [
     'audio_sample_rate' => '48000'
   ],
   'udp2' => [
-    'common_backend'=>'transcode',
+    'common_backend' => 'transcode',
     'udp' => 'udp://@224.1.1.1:8002',
     'formate' => 'mpeg2video',
     'resolution' => '720x576',
@@ -85,7 +85,7 @@ $defaults = [
     'audio_sample_rate' => '48000'
   ],
   'srt' => [
-    'common_backend'=>'use_common_backend',
+    'common_backend' => 'use_common_backend',
     'formate' => 'mpeg2video',
     'resolution' => '1920x1080',
     'data_rate' => '6M',
@@ -155,6 +155,7 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
   $new['rtmp0']['audio_data_rate'] = $get('rtmp0_audio_data_rate', $defaults['rtmp0']['audio_data_rate']);
   $new['rtmp0']['audio_db_gain'] = $get('rtmp0_audio_db_gain', $defaults['rtmp0']['audio_db_gain']);
   $new['rtmp0']['audio_sample_rate'] = $get('rtmp0_audio_sample_rate', $defaults['rtmp0']['audio_sample_rate']);
+  $new['rtmp0']['common_backend'] = $get('rtmp0_common_backend', $defaults['rtmp0']['common_backend']);
 
   $new['rtmp1']['resolution'] = $get('rtmp1_resolution', $defaults['rtmp1']['resolution']);
   $new['rtmp1']['data_rate'] = $get('rtmp1_data_rate', $defaults['rtmp1']['data_rate']);
@@ -164,6 +165,7 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
   $new['rtmp1']['audio_data_rate'] = $get('rtmp1_audio_data_rate', $defaults['rtmp1']['audio_data_rate']);
   $new['rtmp1']['audio_db_gain'] = $get('rtmp1_audio_db_gain', $defaults['rtmp1']['audio_db_gain']);
   $new['rtmp1']['audio_sample_rate'] = $get('rtmp1_audio_sample_rate', $defaults['rtmp1']['audio_sample_rate']);
+  $new['rtmp1']['common_backend'] = $get('rtmp1_common_backend', $defaults['rtmp1']['common_backend']);
 
   $new['udp0']['format'] = $get('udp0_format', $defaults['udp0']['format']);
   $new['udp0']['resolution'] = $get('udp0_resolution', $defaults['udp0']['resolution']);
@@ -176,6 +178,7 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
   $new['udp0']['audio_db_gain'] = $get('udp0_audio_db_gain', $defaults['udp0']['audio_db_gain']);
   $new['udp0']['audio_sample_rate'] = $get('udp0_audio_sample_rate', $defaults['udp0']['audio_sample_rate']);
   $new['udp0']['udp'] = $get('udp0_ip', $defaults['udp0']['udp']);
+  $new['udp0']['common_backend'] = $get('udp0_common_backend', $defaults['udp0']['common_backend']);
 
   $new['udp1']['format'] = $get('udp1_format', $defaults['udp1']['format']);
   $new['udp1']['resolution'] = $get('udp1_resolution', $defaults['udp1']['resolution']);
@@ -188,6 +191,7 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
   $new['udp1']['audio_db_gain'] = $get('udp1_audio_db_gain', $defaults['udp1']['audio_db_gain']);
   $new['udp1']['audio_sample_rate'] = $get('udp1_audio_sample_rate', $defaults['udp1']['audio_sample_rate']);
   $new['udp1']['udp'] = $get('udp1_ip', $defaults['udp1']['udp']);
+  $new['udp1']['common_backend'] = $get('udp1_common_backend', $defaults['udp1']['common_backend']);
 
   $new['udp2']['format'] = $get('udp2_format', $defaults['udp2']['format']);
   $new['udp2']['resolution'] = $get('udp2_resolution', $defaults['udp2']['resolution']);
@@ -200,6 +204,7 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
   $new['udp2']['audio_db_gain'] = $get('udp2_audio_db_gain', $defaults['udp2']['audio_db_gain']);
   $new['udp2']['audio_sample_rate'] = $get('udp2_audio_sample_rate', $defaults['udp2']['audio_sample_rate']);
   $new['udp2']['udp'] = $get('udp2_ip', $defaults['udp2']['udp']);
+  $new['udp2']['common_backend'] = $get('udp2_common_backend', $defaults['udp2']['common_backend']);
 
   $new['srt']['format'] = $get('srt_resolution', $defaults['srt']['format']);
   $new['srt']['resolution'] = $get('srt_resolution', $defaults['srt']['resolution']);
@@ -211,6 +216,7 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
   $new['srt']['audio_data_rate'] = $get('srt_audio_data_rate', $defaults['srt']['audio_data_rate']);
   $new['srt']['audio_db_gain'] = $get('srt_audio_db_gain', $defaults['srt']['audio_db_gain']);
   $new['srt']['audio_sample_rate'] = $get('srt_audio_sample_rate', $defaults['srt']['audio_sample_rate']);
+  $new['srt']['common_backend'] = $get('srt_common_backend', $defaults['srt']['common_backend']);
 
   $new['custom_output'] = $get('custom_output', '');
 
@@ -418,6 +424,15 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
             </select>
           </div>
         </div>
+        <div class="dropdown-container">
+          <span class="dropdown-label">Common Backend :</span>
+          <div class="dropdown">
+            <select name="rtmp0_common_backend" id="rtmp0_common_backend">
+              <option value="enable" <?php if ($data['rtmp0']['common_backend'] == 'enable') echo 'selected'; ?>>Enable</option>
+              <option value="disable" <?php if ($data['rtmp0']['common_backend'] == 'disable') echo 'selected'; ?>>Disable</option>
+            </select>
+          </div>
+        </div>
 
         <div class="grid">
           <div class="card">
@@ -548,6 +563,15 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
             </select>
           </div>
         </div>
+        <div class="dropdown-container">
+          <span class="dropdown-label">Common Backend :</span>
+          <div class="dropdown">
+            <select name="rtmp1_common_backend" id="rtmp1_common_backend">
+              <option value="enable" <?php if ($data['rtmp1']['common_backend'] == 'enable') echo 'selected'; ?>>Enable</option>
+              <option value="disable" <?php if ($data['rtmp1']['common_backend'] == 'disable') echo 'selected'; ?>>Disable</option>
+            </select>
+          </div>
+        </div>
 
         <div class="grid">
           <div class="card">
@@ -660,6 +684,15 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
             </select>
           </div>
         </div>
+        <div class="dropdown-container">
+          <span class="dropdown-label">Common Backend :</span>
+          <div class="dropdown">
+            <select name="udp0_common_backend" id="udp0_common_backend">
+              <option value="enable" <?php if ($data['udp0']['common_backend'] == 'enable') echo 'selected'; ?>>Enable</option>
+              <option value="disable" <?php if ($data['udp0']['common_backend'] == 'disable') echo 'selected'; ?>>Disable</option>
+            </select>
+          </div>
+        </div>
 
         <div class="grid">
           <div class="card">
@@ -779,6 +812,15 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
             </select>
           </div>
         </div>
+        <div class="dropdown-container">
+          <span class="dropdown-label">Common Backend :</span>
+          <div class="dropdown">
+            <select name="udp1_common_backend" id="udp1_common_backend">
+              <option value="enable" <?php if ($data['udp1']['common_backend'] == 'enable') echo 'selected'; ?>>Enable</option>
+              <option value="disable" <?php if ($data['udp1']['common_backend'] == 'disable') echo 'selected'; ?>>Disable</option>
+            </select>
+          </div>
+        </div>
 
         <div class="grid">
           <div class="card">
@@ -898,6 +940,15 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
             </select>
           </div>
         </div>
+        <div class="dropdown-container">
+          <span class="dropdown-label">Common Backend :</span>
+          <div class="dropdown">
+            <select name="udp2_common_backend" id="udp2_common_backend">
+              <option value="enable" <?php if ($data['udp2']['common_backend'] == 'enable') echo 'selected'; ?>>Enable</option>
+              <option value="disable" <?php if ($data['udp2']['common_backend'] == 'disable') echo 'selected'; ?>>Disable</option>
+            </select>
+          </div>
+        </div>
 
         <div class="grid">
           <div class="card">
@@ -1018,6 +1069,15 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
             </select>
           </div>
         </div>
+        <div class="dropdown-container">
+          <span class="dropdown-label">Common Backend :</span>
+          <div class="dropdown">
+            <select name="srt_common_backend" id="srt_common_backend">
+              <option value="enable" <?php if ($data['srt']['common_backend'] == 'enable') echo 'selected'; ?>>Enable</option>
+              <option value="disable" <?php if ($data['srt']['common_backend'] == 'disable') echo 'selected'; ?>>Disable</option>
+            </select>
+          </div>
+        </div>
 
         <div class="grid">
           <div class="card">
diff --git a/encoder/static.php b/encoder/static.php
index 3fbb4de..e21613f 100755
--- a/encoder/static.php
+++ b/encoder/static.php
@@ -104,9 +104,9 @@ function update_service($which_service)
             switch ($input_source) {
                 case "hdmi":
                     $input .= "ffmpeg -hwaccel auto -hide_banner -f v4l2 -thread_queue_size 512 -input_format mjpeg -video_size " . $data['hdmi']['resolution']
-                        . " -framerate " . $data['hdmi']['framerate'] . " -f alsa -i " . $data['hdmi']['audio_source']
+                        . " -framerate " . $data['hdmi']['framerate'] . " -i /dev/video0 -f alsa -i " . $data['hdmi']['audio_source']
                         . " -c:v h264_qsv "
-                        . ' -vf "scale=' . $common_backend_resolution
+                        . ' -vf "scale=' . $common_backend_resolution.'"'
                         . " -b:v " . $common_backend_data_rate
                         . " -maxrate " . $common_backend_data_rate
                         . " -bufsize 12M"
@@ -287,7 +287,7 @@ function update_service($which_service)
             'audio_sample_rate' => '48000'
         ],
         'srt' => [
-            'formate' => 'mpeg2video',
+            'formate' => 'h264_qsv',
             'resolution' => '1920x1080',
             'data_rate' => '6M',
             'framerate' => '50',
@@ -510,7 +510,7 @@ http {
                     case "transcode":
                         $rtmp = 'ffmpeg -hwaccel auto -hide_banner -fflags nobuffer -analyzeduration 3000000 -i "udp://@239.255.254.254:39000?fifo_size=5000000&overrun_nonfatal=1&localaddr=127.0.0.1" '
                             . ' -c:v h264_qsv '
-                            . ' -vf "scale=' . str_replace("x", ":", $data['rtmp0']['resolution'])
+                            . ' -vf "scale=' . str_replace("x", ":", $data['rtmp0']['resolution']).'"'
                             . '" -b:v ' . $data['rtmp0']['data_rate']
                             . ' -maxrate ' . $data['rtmp0']['data_rate']
                             . ' -bufsize ' . $data['rtmp0']['data_rate']