title: Anaconda cannot find openh264 library
body: <p>I am trying to install openh264 to use with opencv on a jupyter notebook. I am working from the anaconda prompt within an environment on Windows 10 Pro. I am using the recommended channels found <a href="https://anaconda.org/search?q=openh264" rel="nofollow noreferrer">on the Anaconda website</a>.    </p>
  
  <p>For every and each of them, it returns </p>
  
  <blockquote>
    <p>Collecting package metadata (repodata.json): done<br>
    Solving environment: failed  </p>
    
    <p>PackagesNotFoundError: The following packages are not available from current channels:<br>
    - openh264  </p>
    
    <p>Current channels:<br>
    - <a href="https://conda.anaconda.org/conda-forge/win-64" rel="nofollow noreferrer">https://conda.anaconda.org/conda-forge/win-64</a><br>
    - <a href="https://conda.anaconda.org/conda-forge/noarch" rel="nofollow noreferrer">https://conda.anaconda.org/conda-forge/noarch</a><br>
    - <a href="https://repo.anaconda.com/pkgs/main/win-64" rel="nofollow noreferrer">https://repo.anaconda.com/pkgs/main/win-64</a><br>
    - <a href="https://repo.anaconda.com/pkgs/main/noarch" rel="nofollow noreferrer">https://repo.anaconda.com/pkgs/main/noarch</a><br>
    - <a href="https://repo.anaconda.com/pkgs/r/win-64" rel="nofollow noreferrer">https://repo.anaconda.com/pkgs/r/win-64</a><br>
    - <a href="https://repo.anaconda.com/pkgs/r/noarch" rel="nofollow noreferrer">https://repo.anaconda.com/pkgs/r/noarch</a><br>
    - <a href="https://repo.anaconda.com/pkgs/msys2/win-64" rel="nofollow noreferrer">https://repo.anaconda.com/pkgs/msys2/win-64</a><br>
    - <a href="https://repo.anaconda.com/pkgs/msys2/noarch" rel="nofollow noreferrer">https://repo.anaconda.com/pkgs/msys2/noarch</a>  </p>
    
    <p>To search for alternate channels that may provide the conda package you're                                              looking for, navigate to                                                                                                                                                                                                                            <a href="https://anaconda.org" rel="nofollow noreferrer">https://anaconda.org</a>                                                                                                                                                                                                                        and use the search bar at the top of the page.    </p>
  </blockquote>
  
  <p>I have also tried adding one channel, conda-forge, to the list of default channels:</p>
  
  <pre><code>conda config --append channels conda-forge 
  </code></pre>
  
  <p>and then trying installation with  </p>
  
  <pre><code>conda install openh264  
  </code></pre>
  
  <p>but I get the same result.    </p>
  
  <p>A pip installation   </p>
  
  <pre><code>pip install openh264    
  </code></pre>
  
  <p>returns</p>
  
  <blockquote>
    <p>Collecting openh264                                                                                                       ERROR: Could not find a version that satisfies the requirement openh264 (from versions: none)                         ERROR: No matching distribution found for openh264    </p>
  </blockquote>
  
  <p>I am new to video and audio encoding and processing, but I am under the impression that OpenH264 is widely used. Any idea of what might be happening?</p>