Audio File Not Playing? Here is how to fix corrupted file

If you are using Remote Call Recorder/Remote Audio Recorder and audio files captured are not showing call duration then most probably it’s corrupted.

The below article explains how to fix an audio file with zero duration but having content in it.

The corruption happens when the call recorder initiates the recording but terminates abruptly. The duration of the audio is written at the end as duration is not known beforehand. But if the recording is closed abruptly the duration is not written in the header and audio players will fail to play the file marking it as corrupted.

To fix this follow the below steps. The steps are taken from here. You can visit that site for a more detailed explanation:

1. Download and make sure the size of the audio file is more than 100 KB, else the audio is not played cause there is nothing in the file.

2. Download faad.exe from

3. Download faac.exe from

4. Download hex editor from…/3000-2352_4-10891068.html and install.

5. Open the corrupt audio file in hex editor and search and remove content till mdat (including mdat).

6. Decode by faad.exe using the below command in cmd (windows):
faad.exe “file name”

7. Encode by faac.exe using the below command:
faac.exe -b 160 -o "output file".m4a “input file from above step”

That’s it. The output file now should work in any player.

How to fix corrupted audio file?

Fix corrupted audio file in 3 simple steps:

1. Download faac.exe, faad.exe, Hex Editor.
2. Remove till mdat in Hex Editor.
3. Run faac.exe
4. faac.exe -b 160 -o “output file”.m4a “input file from above step”.

That’s it. You should be able to play the output file properly.

Srihari Karanth is an active developer and Founder of TrackMyPhones. He is a former Software Architect in Global MNC. He now works on building new innovative mobile applications and websites. You can reach him at


Leave a Reply

4 Comment threads
4 Thread replies
Most reacted comment
Hottest comment thread
5 Comment authors
MeghanaHaiderMister ASriharisilver Recent comment authors
newest oldest most voted
Notify of

this app was detected by the vaccine. names ‘V3 Mobile Plus 2.0’
would you have any plan for update for this issue?

and this app’s name was ‘Audio Rec’, have you any plan to change this app?

and also, When using this app, is there a way not to disturb other apps such as other recordings, video recordings, and VOIP?


Hello app is not installing it opens like a zipped folder and there are so many other folders in kbs or said unable to open why kindly guide?

Mister A
Mister A

Hi Srihari, The Call Recorder is working fine on one of the device but suddently stopped pulling Audio Files from another 2nd device. It was pulling on the new device earlier but has suddenly stopped i guess after that phone was done with a OS update. Target phone is Samsung S8 running Pie with latest update done 2 days ago. Pl advice a solution for the same. Should i uninstall and reinstall the app there?


Hello Srihari,
Thanks for this wonderful app. It helped in saving my marriage by taking precautions. Stay blessed.
Could you keep the name as Record Audio or anything not beginning with the letter A. It shows up in the top of the list of Apps and my spouse commented that the icon looks scary.