Can not upload a non-16:9 video to Piwigo from the piwigo-lightroom plugin...

[Film54]

Using the publish setting in the Lightroom Piwigo plug in, 16x9 videos will upload fine. Using the piwigo web interface, non-16x9 videos upload and play fine... but when trying to upload videos that are not of standard size from doing a Lightroom sync via piwigo-lightroom the videos will not upload and give me an error "upload failed". Any help for fixing would be greatly appreciated! Thank you.