When you open Cryptomator, activate Debug-Logging in the general settings, open the vault in question and copy such a video from the vault to an unencrypted location and lock the vault and close Cryptomator afterwards,
- does the log file contain any
WARN
ings orERROR
s ? You can also send me the log file via a PM, so we can look into this issue - and has the copied file also a file size of 0 ?
Additional questions:
- What is your cloud provider?
- Do you download the files or are you using features likes OneDrive FilesOnDemand?