getting all videos from android phone

Have you tried transferring them to your computer with the usb cable instead of emailing them to yourself? If you want to get them onto your SD card, you should be able to copy or move them with a file manager app. Most phones have a simple one built in, or you could get a free one like ES file manager free from the Play store.

 

And if you have already tried the method above (which I think you hinted at in your post), first make sure you find and install the correct USB drivers for your device on your computer first, then try it again.

good luck