Moving files to SD Card corrupted them I have a Galaxy S10, I had a lot of videos from vacation and wanted to move them to my sd card because it's three times the size of my phone. 

I used the system file manager app and transferred probably 1-2gbs worth of videos in one "move". 

Now the videos show the correct length and size, but most of them stop after 10-30 seconds. Did I really just lose everything? The SD card is fine everything in it works and my computer accepts it with no problems.

*I just checked and there is still sound but the video stops