whenever i try to upload a video from my pictures folder to dropbox. It just shows a white screen with no video but only audio. But when i upload a video from my whatsapp video folder to dropbox. It does work and i get video and sound. Why does this happen. I have a samsung galaxy grand neo plus and i save the video's on my ipad air 1. What i also found weird is that whenever i upload a video from my pictures folder dropbox puts it in the photo category. But when i upload a video from my whatsapp video folder. Dropbox puts it in a seprate video category. sorry for bad english