Whats is the tmp files in my camera roll folder?

[hardywang]

I have 950XL, I took some pictures (jpg + dng) with it. Now I connected it phone to my PC (Windows 10), I browsed to my camera roll folder on the SD card from my PC to copy my pictures. Now I noticed some files like WP_20160211_16_26_14_Raw_LI.mp4.thm.tmp (1.3 mb), WP_20160211_16_26_14_Raw_LI.mp4.tnl.tmp (300 kb).

What are they?

 

[peter leung 10586]

seems to be files from live images..