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<description>Recent content in Blog on Crony Akatsuki&#39;s Website</description>
<generator>Hugo -- gohugo.io</generator>
<language>en-us</language>
<lastBuildDate>Thu, 04 Apr 2024 20:44:10 +0200</lastBuildDate>
<lastBuildDate>Mon, 20 Jan 2025 18:16:55 +0100</lastBuildDate>
<atom:link href="https://cronyakatsuki.xyz/blog/index.xml" rel="self" type="application/rss+xml" />
<item>
<title>How to setup a phone as wireless webcam on linux</title>
<link>https://cronyakatsuki.xyz/blog/phone-wireless-webcam-linux/</link>
<pubDate>20-01-2025</pubDate>
<guid>https://cronyakatsuki.xyz/blog/phone-wireless-webcam-linux/</guid>
<description>&lt;p&gt;Anybody else need to have a webcam nowdays because of all the remote stuff that has started happening since covid, getting forced into having a webcam so that your boss/teacher/professor can follow what you are doing but don&amp;rsquo;t wanna spend money on getting one and you are luckilly using linux? Then look no further because if you have a decent phone ( S24 in my case ) you can have use it as a wireless webcam ( or usb if your android version is lover than 14 ).&lt;/p&gt;
&lt;p&gt;I will now show you the steps and some basic settings and a script to simplify the steps.&lt;/p&gt;
&lt;!-- raw HTML omitted --&gt;
&lt;h1 id=&#34;1-enable-wirelessusb-debugging-on-your-phone&#34;&gt;1. Enable Wireless/Usb Debugging on your phone&lt;/h1&gt;
&lt;p&gt;First you will have to enable wireless/usb debugging on your phone. The steps can somewhat differ depending on your phone and as such I will use my phone as an example.&lt;/p&gt;
&lt;ol&gt;
&lt;li&gt;Enter your settings&lt;/li&gt;
&lt;li&gt;Enter &amp;ldquo;About phone&amp;rdquo;&lt;/li&gt;
&lt;li&gt;Enter &amp;ldquo;Software Information&amp;rdquo;&lt;/li&gt;
&lt;li&gt;Click on &amp;ldquo;Build number&amp;rdquo; until a popup tells you developer mode has been enable&lt;/li&gt;
&lt;li&gt;Exit back to main menu of settings and enter &amp;ldquo;Developer Options&amp;rdquo;&lt;/li&gt;
&lt;li&gt;Enable Wireless/Usb debugging&lt;/li&gt;
&lt;/ol&gt;
&lt;p&gt;Note that for Wireless Debugging you will have to enable it again every time you wanna use your phone as a webcam. To help with that you can ebale wireless debugging as a tile by going to developer options&amp;gt;&amp;ldquo;Quick settings for developer tiles&amp;rdquo; and enabling wireless debugging.&lt;/p&gt;
&lt;h1 id=&#34;2-installing-necesarry-software-on-your-linux-system&#34;&gt;2. Installing necesarry software on your linux system&lt;/h1&gt;
&lt;p&gt;Now we have to install the needed software on your linux system to make all this work. I will use arch as an example but will first list the software you need:&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;android-tools (adb)&lt;/li&gt;
&lt;li&gt;v4l2loopback&lt;/li&gt;
&lt;li&gt;scrcpy&lt;/li&gt;
&lt;/ul&gt;
&lt;blockquote&gt;
&lt;p&gt;example command&lt;/p&gt;
&lt;/blockquote&gt;
&lt;div class=&#34;highlight&#34;&gt;&lt;pre tabindex=&#34;0&#34; style=&#34;color:#c6d0f5;background-color:#303446;-moz-tab-size:4;-o-tab-size:4;tab-size:4;&#34;&gt;&lt;code class=&#34;language-bash&#34; data-lang=&#34;bash&#34;&gt;&lt;span style=&#34;display:flex;&#34;&gt;&lt;span&gt;sudo pacman -S android-tools v4l2loopback-dkms scrcpy
&lt;/span&gt;&lt;/span&gt;&lt;/code&gt;&lt;/pre&gt;&lt;/div&gt;&lt;h1 id=&#34;3-pair-your-phone-with-your-pc-using-adb&#34;&gt;3. Pair your phone with your pc using adb&lt;/h1&gt;
&lt;p&gt;Now we will need to pair your phone using adb wirelessly with your pc.&lt;/p&gt;
&lt;p&gt;Go to wireless debugging settings on your phone, make sure it&amp;rsquo;s enable and click the pair with code option. Take note of the ip and port, you will have to use it on your pc.&lt;/p&gt;
&lt;p&gt;Next you have to run this command: &lt;code&gt;adb pair IP:PORT&lt;/code&gt;. After running the command you have to enter the pair code and press enter.&lt;/p&gt;
&lt;p&gt;And we are done, you are now connected to your phone.&lt;/p&gt;
&lt;h1 id=&#34;4-setup-video-dummy-device-and-output-camera-feed-to-it&#34;&gt;4. Setup video dummy device and output camera feed to it.&lt;/h1&gt;
&lt;p&gt;Now we need to setup a dummy video device using v4l2loopback driver, using this command : &lt;code&gt;sudo modprobe -v v4l2loopback exclusive_caps=1 card_label=&amp;quot;Virtual Webcam&amp;quot;&lt;/code&gt;.&lt;/p&gt;
&lt;p&gt;Now we need to use the command &lt;code&gt;v4l2-ctl&lt;/code&gt; to get which number the video device is, in my case it&amp;rsquo;s &lt;code&gt;/dev/video2&lt;/code&gt;&lt;/p&gt;
&lt;blockquote&gt;
&lt;p&gt;example&lt;/p&gt;
&lt;/blockquote&gt;
&lt;div class=&#34;highlight&#34;&gt;&lt;pre tabindex=&#34;0&#34; style=&#34;color:#c6d0f5;background-color:#303446;-moz-tab-size:4;-o-tab-size:4;tab-size:4;&#34;&gt;&lt;code class=&#34;language-bash&#34; data-lang=&#34;bash&#34;&gt;&lt;span style=&#34;display:flex;&#34;&gt;&lt;span&gt;❯ v4l2-ctl --list-devices
&lt;/span&gt;&lt;/span&gt;&lt;span style=&#34;display:flex;&#34;&gt;&lt;span&gt;Virtual Webcam &lt;span style=&#34;color:#99d1db;font-weight:bold&#34;&gt;(&lt;/span&gt;platform:v4l2loopback-000&lt;span style=&#34;color:#99d1db;font-weight:bold&#34;&gt;)&lt;/span&gt;:
&lt;/span&gt;&lt;/span&gt;&lt;span style=&#34;display:flex;&#34;&gt;&lt;span&gt; /dev/video2
&lt;/span&gt;&lt;/span&gt;&lt;span style=&#34;display:flex;&#34;&gt;&lt;span&gt;
&lt;/span&gt;&lt;/span&gt;&lt;span style=&#34;display:flex;&#34;&gt;&lt;span&gt;HD User Facing: HD User Facing &lt;span style=&#34;color:#99d1db;font-weight:bold&#34;&gt;(&lt;/span&gt;usb-0000:05:00.3-1&lt;span style=&#34;color:#99d1db;font-weight:bold&#34;&gt;)&lt;/span&gt;:
&lt;/span&gt;&lt;/span&gt;&lt;span style=&#34;display:flex;&#34;&gt;&lt;span&gt; /dev/video0
&lt;/span&gt;&lt;/span&gt;&lt;span style=&#34;display:flex;&#34;&gt;&lt;span&gt; /dev/video1
&lt;/span&gt;&lt;/span&gt;&lt;span style=&#34;display:flex;&#34;&gt;&lt;span&gt; /dev/media0
&lt;/span&gt;&lt;/span&gt;&lt;/code&gt;&lt;/pre&gt;&lt;/div&gt;&lt;p&gt;Now we can use scrcpy to get our phone&amp;rsquo;s camera and show it on your pc in a nice little window, in my case I use this command which is pretty long but will explain it:&lt;/p&gt;
&lt;div class=&#34;highlight&#34;&gt;&lt;pre tabindex=&#34;0&#34; style=&#34;color:#c6d0f5;background-color:#303446;-moz-tab-size:4;-o-tab-size:4;tab-size:4;&#34;&gt;&lt;code class=&#34;language-bash&#34; data-lang=&#34;bash&#34;&gt;&lt;span style=&#34;display:flex;&#34;&gt;&lt;span&gt;scrcpy --video-source&lt;span style=&#34;color:#99d1db;font-weight:bold&#34;&gt;=&lt;/span&gt;camera --no-audio --camera-facing&lt;span style=&#34;color:#99d1db;font-weight:bold&#34;&gt;=&lt;/span&gt;front --v4l2-sink&lt;span style=&#34;color:#99d1db;font-weight:bold&#34;&gt;=&lt;/span&gt;/dev/video2 --camera-fps&lt;span style=&#34;color:#99d1db;font-weight:bold&#34;&gt;=&lt;/span&gt;&lt;span style=&#34;color:#ef9f76&#34;&gt;60&lt;/span&gt; --video-codec&lt;span style=&#34;color:#99d1db;font-weight:bold&#34;&gt;=&lt;/span&gt;h265 --camera-ar&lt;span style=&#34;color:#99d1db;font-weight:bold&#34;&gt;=&lt;/span&gt;4:3 -m1920 --capture-orientation&lt;span style=&#34;color:#99d1db;font-weight:bold&#34;&gt;=&lt;/span&gt;flip90
&lt;/span&gt;&lt;/span&gt;&lt;/code&gt;&lt;/pre&gt;&lt;/div&gt;&lt;p&gt;Now to explain the options:&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;&lt;code&gt;--video-source=camerate&lt;/code&gt; makes sure scrcpy uses your camera as the source&lt;/li&gt;
&lt;li&gt;&lt;code&gt;--no-audio&lt;/code&gt; makes sure to not catch phone mic audio,&lt;/li&gt;
&lt;li&gt;&lt;code&gt;--camera-facing=front&lt;/code&gt; uses front camera, you can change it to use back camera also&lt;/li&gt;
&lt;li&gt;&lt;code&gt;--v4l2-sink=/dev/video2&lt;/code&gt; make sure to use the video output to your &amp;ldquo;Virtual Webcam&amp;rdquo;&lt;/li&gt;
&lt;li&gt;&lt;code&gt;--camera-fps=60&lt;/code&gt; uses 60fps mode of the camera&lt;/li&gt;
&lt;li&gt;&lt;code&gt;--video-coded=h265&lt;/code&gt; provides better quality than &lt;code&gt;h264&lt;/code&gt;, but higher latency&lt;/li&gt;
&lt;li&gt;&lt;code&gt;--camera-ar=4:3&lt;/code&gt; and &lt;code&gt;-m1920&lt;/code&gt; limits resolution to 1920 and makes it 4:3, for more caught on camera&lt;/li&gt;
&lt;li&gt;&lt;code&gt;--capture-orientation=flip90&lt;/code&gt; flips the picture and rotates it by 90 degrees, you don&amp;rsquo;t need the 90 and can use just flip0 if you make your phone stand landscape&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;And now you have a nice little window showing of your phone camera wirelessly on your pc. It is also accebible with software like zoom/obs/discord/&amp;hellip;&lt;/p&gt;
&lt;hr&gt;
&lt;p&gt;Hope you had a decent time reading this and have managed to get it all working with your nice new webcam ;)&lt;/p&gt;
</description>
</item>
<item>
<title>Securing SSH</title>
<link>https://cronyakatsuki.xyz/blog/securing-ssh/</link>