Press F key with control key to open the Find box. Start HxD or your binary editor program and open the broken m4a file. Please copy the broken m4a file to some folder for backup. Please place the copied file to the same directory as where you placed the above faad.exe and faac.exe. Move your voice memo file from your iPhone to PC via iTunes. If you don’t know well, I will recommend HxD.Įxtract setup.exe and click it to install. Download faac.exeĬlick “Download (191kB)” for “ FAACv1.28 Binary for Win32“.Įxtract faac.exe from the downloaded zip file.įor example, you see faad.exe and faac.exe in the Downloads folder as below. Place it in the “Downloads” folder, for example.īe noted that the extracted file name is “ faad.exe” although the downloaded file name is “ faad2-20100614.zip”. Download faad.exeĬlick “Download (225kB)” of “ FAAD2v20100614 CVS snapshot for Win32“.Įxtract faad.exe from the downloaded zip file. The m4a files get broken when some parts of header lost correct information.įor example, when the bytes indicating the length of the audio data become 0, the file can not be replayed any more on iPhone, iPad, Mac or Windows PC.īut, in some cases you can fix the broken header by yourself by extracting the audio data, encoding it, and putting it into the new file container.
By following the instructions in this article, you can also repair files recorded by other apps like QuickVoice or recorded on Android phones, whose extensions may be “mp4” or “3gp”. It is audio data encoded in the AAC format and encapsulated in MPEG4 file container. Voice memo files have the extension “m4a”. I will show you the steps in this article. Do you have broken voice memo files? You can fix those files by yourself.