For me, using App Inventor, Filey doesn’t want to recognise /storage/emulated/0 as a file path, have to convert this to /mnt/sdcard. Other than that all works well 
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It worked on Memu with that path.Probably it varies with devices.
You can use GetExternalStoragePath block of EFile extension to get correct path of external storage.
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OK thank you 
Which device and which Android version?
Actually, this path /storage/emulated/0 should work on all Android versions. I’ve tested this on dozen of devices and all versions of Android. Of course I don’t know the source code of this extension, but I can’t imagine that @vknow360 should have changed anything here compared to his other extensions.
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Actually this extension works with absolute file path.
Was on my Genymotion Emulator Android 9, running companion. Juan’s extension uses " / " and works fine. Tried that and file:///storage/emulated/0/file but neither worked…
Takes too much time.
One more reason the path /storage/emulated/0/ should work.
I don’t trust Genymotion and other emulators. I always test on real devices and don’t know of any device or Android version on which this path does not work.
And I’m still waiting for someone to find such a device. (I’m pretty sure there isn’t one.)
Genymotion Emulator Pixel 3XL Android 9 
As I said, I am talking about real devices.
Can you check the external storage path using an appropriate extension?
Can you add a block to load Base 64 string to a Image component or layout backgrounds?
Asynchronously.
I used your fileTools extension to deliver the file path…getting Directories, then Files
Tested through companion on my Android 7 (real device) and /storage/emulated/0 and /mnt/sdcard both work. I don’t have a newer “real” device to test on.
I will think about this.
Strange 
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Ran a few tests this morning.
/storage/emulated/0 is now working
must have been some cruft laying around in the companion which has cleared itself.
How can i know which type of file is decoded?
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When video file string then take too much time and hang my phone.
I want to download video from server and save it in chunk file.
Please guide me
I don’t think that’s possible.
Make sure you are using Filey extension.