How do I change the naming scheme of Silent Camera to human readable form? I have very good reasons not to want the shutter sound when taking photos. I have two camera apps that both have it, one came with the system and is called Camera. I deleted the other one, so I will call it xCamera from now on. 

I therefore downloaded Silent Camera, which I found out about in an answer to some question over here. Its naming scheme simply makes no sense. Now Camera used to name photos by a yyyy-mm-dd-hh-mm-ss.jpg scheme, where:


yyyy is 4 digits representing the year the photo was taken, 
mm is 2 digits for the months, 
dd for the day, 
hh for hour (24h clock IIRC), 
mm for minute, and 
ss for second. 


xCamera had mostly the same scheme, without the dashes. Silent Camera has names like 1438263708113.jpg, which really seems just like a random sequence of numbers. 

Now I sometimes need the date and, especially, the time a photo was taken for my own good reasons. You will probably say, "Well the computer can tell you that, it remembers the Date Modified and similar info, right?". Yes. Trouble is, Android File Transfer is somewhat buggy, and sometimes (in a pretty erratic manner) suddenly stops letting me drag-and-drop files to the Finder, i.e. as I drag the files, the AFT window comes along, which of course prevents copying. 

Also, moving files between directories of the phone is almost always impossible. That is another story, but the first point - problems copying - leads me to AirDroid. Unfortunately, this leads to losing the date-and-time info, which is sometimes pretty valuable to me. So I either lose that info or rename all photos to include the name Camera would give the photo, were it to take that photo.

Bottom line is: is there a way to change the naming scheme of Silent Camera? And if so, what is it?

Note: I really don't want to root my phone
This solution is independent of any Camera app, and is tested on CM12 (Lollipop 5.0.2) and should work on other Lollipop ROMs as well.

While it seems that the question is about changing the naming scheme of Silent Camera app, the actual goal is to use an app that is free from shutter sounds. OP seems to have found an another app (see this answer) to suit the needs. But I would like to give a solution which would enable you to use any choice of Camera app(s), irrespective of whether it silences shutter sound! 

Needed: A rooted device, and Tasker. Scroll to bottom for non-rooted devices.

All I'm going to do is activate Zen mode aka Do not Disturb mode which would kill  Notification volume, and Ring volume. Don't worry! This mode would automatically switch to user defined sound settings as soon as you switch from Camera app to any other app (including your Launcher app).

Instructions


Create a task in Tasker named Camera.
Create an action in it as Code &rarr; Run Shell, and fill these details:


Command: settings get global zen_mode
Check Use Root
Store Output In: %Zen_mode


We're storing the current value of Zen Mode (be it None or Priority or All) in a variable named  %Zen_mode so that we can recall our sound settings when we close the Camera app.
Create an another action in it as Code &rarr; Run Shell, and fill these details:


Command: settings put global zen_mode 2
Check Use Root


This would change Zen Mode from the current setting to  None i.e. no Ring or Notification sound, or vibration would disturb. 
Create an another task named No_Camera.
Create an action in it as Code &rarr; Run Shell, and fill these details:


Command: settings put global zen_mode $(echo "%Zen_mode")
Check Use Root


This would enable the sound settings you had before launching the Camera app.
Create a profile with Application context, and choose your Camera app.
Select the task Camera in it.
Create an another profile with Application context,  choose the Camera app you chose in step 6, and tap Invert at the bottom.
Select the task No_Camera in it.
Enable Tasker if disabled.


Now, launch your Camera app that you chose in the aforesaid step 6, and you would find that it is not making shutter sounds at all. Close the app, and you would  see that your sound settings returned back immediately. 

I've successfully tested this solution on default Camera app, Google Camera, and Camera FV-5. All tested individually as well as in group. 



For Non-rooted devices

You can bypass the need of root permissions (if you barely reboot your device) by running loop-back adb  in wireless mode. See step 2 in Instructions here to understand the loop-back ADB usage, and then use it with the aforementioned steps.