This plugin adds the possibility to mass upload images to a <a href="https://wordpress.org/extend/plugins/yet-another-photoblog/" title="Yet Another Photoblog" rel="ugc">YAPB</a>-enabled blog using the WordPress flash-uploader.
When this plugin is enabled, a new page name ‘YAPB Bulk’ is added to the Posts menu. From here you can select multiple images which will be then uploaded to your blog. A few options can be set before each upload:
<ul>
<li>Use the image EXIF date, or your own date as post date,</li>
<li>Use IPTC information to fill the post’s title, content and tags. If not set, the image filename will be used as post title,</li>
<li>Set the post status (draft or published),</li>
<li>Define the category to post in,</li>
<li>Set the author to post as.</li>
</ul>
Note: Your blog must have <a href="https://wordpress.org/extend/plugins/yet-another-photoblog/" title="Yet Another Photoblog" rel="ugc">YAPB</a>. installed and enabled for this plugin to work correctly.

YAPB Bulk Uploader

This plugin adds the possibility to mass upload images to a YAPB-enabled blog using the WordPress flash-uploader.

Schedule YAPB images from a directory with an interval of time. 
Read iptcs set the title, body and tags. 
Perfect for photoblogging.
<h4>Typical usage</h4>
<ul>
<li>Edit your photos in your favorite editor (Lightroom, Aperture, etc.)</li>
<li>Be sure to edit your IPTC data</li>
<li>Upload your image with any FTP client to /wp-content/uploads/yapq-queue</li>
<li>Goto ‘Post’ section and you will see an ‘YAPB queue’ option</li>
<li>Enter the start date and the period of time between post</li>
<li>‘Process queue’… 🙂</li>
</ul>
Based on “YAPB Bulk Uploader” http://joost.reuzel.nl/about/plugins/

yapb-queue

Schedule YAPB images from a directory with an interval of time.

YAPB Bulk Uploader vs yapb-queue