# Concurrent video streaming limits on desktop SDKs

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When implementing a custom meeting UI, you may notice that there are
limits to how many videos can be displayed concurrently. There are
limits imposed by Zoom's back end which ensure that the meeting-related
services maintain a level of integrity at all times for all users. Below
is some information that may help you account for these limits within
your application.

**(Note: self video, AKA local video, does not count towards these
limits)**

## Subscription rules by resolution

<table data-number-column="false">
    <colgroup>
        <col></col>
    </colgroup>
    <tbody>
        <tr>
            <td colspan="1" rowspan="1" data-colwidth="189">
                <p data-renderer-start-pos="548">1080p (Full HD)</p>
            </td>
            <td colspan="1" rowspan="1" data-colwidth="570">
                <p data-renderer-start-pos="567">
                    At most <strong data-renderer-mark="true">1</strong> Full HD
                    video subscription in a meeting
                </p>
            </td>
        </tr>
        <tr>
            <td colspan="1" rowspan="1" data-colwidth="189">
                <p data-renderer-start-pos="622">720p (HD)</p>
            </td>
            <td colspan="1" rowspan="1" data-colwidth="570">
                <p data-renderer-start-pos="635">
                    At most <strong data-renderer-mark="true">2</strong> Full HD
                    video subscription in a meeting
                </p>
            </td>
        </tr>
        <tr>
            <td colspan="1" rowspan="1" data-colwidth="189">
                <p data-renderer-start-pos="690">Mix of Full HD &amp; HD</p>
            </td>
            <td colspan="1" rowspan="1" data-colwidth="570">
                <p data-renderer-start-pos="713">
                    SDK does not support mixing Full HD and HD resolutions. 1
                    Full HD + 1 HD, 1 Full HD + 2 HD, etc. will result in an
                    error
                </p>
            </td>
        </tr>
        <tr>
            <td colspan="1" rowspan="1" data-colwidth="189">
                <p data-renderer-start-pos="821">360p/180p/90p</p>
            </td>
            <td colspan="1" rowspan="1" data-colwidth="570">
                <p data-renderer-start-pos="838">
                    At most <strong data-renderer-mark="true">34</strong> 90p
                    video subscriptions in a meeting,
                </p>
                <p data-renderer-start-pos="888">
                    At most <strong data-renderer-mark="true">17</strong> 180p
                    video subscriptions in a meeting(One 180p = Two 90p),
                </p>
                <p data-renderer-start-pos="959">
                    At most <strong data-renderer-mark="true">4</strong> 360p
                    video subscriptions in a meeting(One 360p = Eight 90p)
                </p>
            </td>
        </tr>
    </tbody>
</table>

## View size and resolution

<table data-number-column="false">
  <colgroup>
    <col>
    </col>
  </colgroup>
  <tbody>
    <tr>
      <th class="ak-renderer-tableHeader-sortable-column" colspan="1" rowspan="1" data-colwidth="303">
        <p data-renderer-start-pos="1119">
          <strong data-renderer-mark="true">View Size</strong>
        </p>
        <figure class="ak-renderer-tableHeader-sorting-icon ak-renderer-tableHeader-sorting-icon__no-order">
          
            <figure class="sc-hORach kbCxgi">
              <div class="sorting-icon-svg__no_order table-sorting-icon-inactive sc-bMVAic grNdFR">&nbsp;
            </figure>
          </div>
        </figure>
      </th>
      <th class="ak-renderer-tableHeader-sortable-column" colspan="1" rowspan="1" data-colwidth="456">
        <p data-renderer-start-pos="1127">
          <strong data-renderer-mark="true">Subscribe size</strong>
        </p>
        <figure class="ak-renderer-tableHeader-sorting-icon ak-renderer-tableHeader-sorting-icon__no-order">
          
            <figure class="sc-hORach kbCxgi">
              <div class="sorting-icon-svg__no_order table-sorting-icon-inactive sc-bMVAic grNdFR">&nbsp;
            </figure>
          </div>
        </figure>
      </th>
    </tr>
    <tr>
      <td colspan="1" rowspan="1" data-colwidth="303">
        <p data-renderer-start-pos="1147">Height &gt;= 850</p>
      </td>
      <td colspan="1" rowspan="1" data-colwidth="456">
        <p data-renderer-start-pos="1164">1080p</p>
      </td>
    </tr>
    <tr>
      <td colspan="1" rowspan="1" data-colwidth="303">
        <p data-renderer-start-pos="1175">Height &gt;= 720</p>
      </td>
      <td colspan="1" rowspan="1" data-colwidth="456">
        <p data-renderer-start-pos="1192">720p</p>
      </td>
    </tr>
    <tr>
      <td colspan="1" rowspan="1" data-colwidth="303">
        <p data-renderer-start-pos="1202">Height &gt;= 360</p>
      </td>
      <td colspan="1" rowspan="1" data-colwidth="456">
        <p data-renderer-start-pos="1219">360p</p>
      </td>
    </tr>
    <tr>
      <td colspan="1" rowspan="1" data-colwidth="303">
        <p data-renderer-start-pos="1229">Height &gt;= 180</p>
      </td>
      <td colspan="1" rowspan="1" data-colwidth="456">
        <p data-renderer-start-pos="1246">180p</p>
      </td>
    </tr>
    <tr>
      <td colspan="1" rowspan="1" data-colwidth="303">
        <p data-renderer-start-pos="1256">Height &lt; 180</p>
      </td>
      <td colspan="1" rowspan="1" data-colwidth="456">
        <p data-renderer-start-pos="1272">90p</p>
      </td>
    </tr>
  </tbody>
</table>