Reaching Media Files of Installed App

[Taifun]

@sTan

then I manually pasted video into /files

Don't do that
Download your files from the internet into ASD
Use for example

[FREE] ASD Downloader Extension - Download and manage files in ASD

[download] ASD Downloader An extension for MIT App Inventor 2. ASD Downloader extension to download and manage files in ASD (App Specific Directory). Developed by The K Studio. ASD Downloader extension to download files in App Specific Directory (ASD) without READ or WRITE PERMISSION. Since ASD is always accessible to READ and WRITE files within the app starting Android 4.4 and it does not requires READ and WRITE permission. Nowadays due to new restrictions in higher Android versions it is…

Taifun