Transferring the data Galaxy S5 form phone to memory

Hello!
I been having issues with my Galaxy S5. I am almost out of hard disk space here due to movies that I downloaded. I would like to transfer the files from phone memory to memory card. I tried to do it but when I check it in my memory card, I cannot see any data transferred. Can you help me with this problem? Can you give me instructions on how to resolve it properly? Can you give me also pointers on how to set any files to be forwarded to my memory card? Can you give me alternative solutions for this? Thank you!
