Hi,

I have a video directory with more than 400 videos but when I try to export the video xml sitemap, I am only able to see about 30 videos out of 400 videos.
After uploading the sitemap on google webmaster tools, I got these errorsattached file)

Error:Invalid URL
Description:This is not a valid URL. Please correct it and resubmit.

Error:Invalid tag value
Description:This XML tag has an invalid value. Please fix it and resubmit.

Error:Missing thumbnail
Description:We've detected that one of the URLS in your Sitemap contains a missing or invalid reference to a thumbnail image file. Please ensure that each URL contains <video:thumbnail_loc> element specifying a valid image URL.

Joomla: 3.4.8
Video Directory Component:HWDmediashare
Sitemap pro:3.9

Thanks,
Alireza