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

1. Create a task in Tasker named Camera.
2. Create an action in it as Code → 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. 3. Create an another action in it as Code → 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. 4. Create an another task named No_Camera. 5. Create an action in it as Code → 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. 6. Create a profile with Application context, and choose your Camera app. 7. Select the task Camera in it. 8. Create an another profile with Application context, choose the Camera app you chose in step 6, and tap Invert at the bottom. 9. Select the task No_Camera in it. 10. 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.

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

1. Create a task in Tasker named Camera.
2. Create an action in it as Code → 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. 3. Create an another action in it as Code → 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. 4. Create an another task named No_Camera. 5. Create an action in it as Code → 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. 6. Create a profile with Application context, and choose your Camera app. 7. Select the task Camera in it. 8. Create an another profile with Application context, choose the Camera app you chose in step 6, and tap Invert at the bottom. 9. Select the task No_Camera in it. 10. 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.