Iphone Voice Memos Hard to Move the Line to Advance or Review
Do you accept broken vocalism memo files? You can prepare those files by yourself. I will testify yous the steps in this commodity.
Voice memo files accept the extension "m4a". It is audio data encoded in the AAC format and encapsulated in MPEG4 file container. By post-obit 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".
The m4a files get cleaved when some parts of header lost correct information.
For case, when the bytes indicating the length of the audio data become 0, the file tin can not be replayed whatsoever more on iPhone, iPad, Mac or Windows PC.
Simply, in some cases you lot can fix the broken header by yourself past extracting the audio data, encoding it, and putting it into the new file container.
Let'due south do information technology together.
STEPS for Windows PC
1. Download faad.exe
Open up http://rarewares.org/aac-decoders.php
Click "Download (225kB)" of "FAAD2v20100614 CVS snapshot for Win32".
Extract faad.exe from the downloaded aught file.
Place it in the "Downloads" binder, for example.
Be noted that the extracted file name is "faad.exe" although the downloaded file name is "faad2-20100614.zippo".
2. Download faac.exe
Open http://rarewares.org/aac-encoders.php
Click "Download (191kB)" for "FAACv1.28 Binary for Win32".
Extract faac.exe from the downloaded zip file.
Place it in the same folder equally above.
For example, you encounter faad.exe and faac.exe in the Downloads folder as below.
3. Download hex editor
You can cull whatsoever favorite hex editor.
If you don't know well, I volition recommend HxD.
Download a null file from http://download.cnet.com/HxD-Hex-Editor/3000-2352_4-10891068.html or http://mh-nexus.de/en/downloads.php?product=HxD
Extract setup.exe and click it to install.
4. Identify the file to the same directory.
Motion your voice memo file from your iPhone to PC via iTunes. You can employ other tools like iFunbox.
Please place the copied file to the same directory as where yous placed the higher up faad.exe and faac.exe.
We call the file "20140615 163625.m4a", for case.
five. Open the file with binary editor.
Delight copy the broken m4a file to some binder for backup.
Start HxD or your binary editor program and open the broken m4a file.
Press F key with control key to open the Find box.
Type "mdat" and press the Detect button.
Select from the beginning of the file to the "t" of "mdat" as shown beneath.
You have to select everything before the word "mdat" plus the word "mdat".
Printing Delete primal to delete the selected area.
Press S central with command key to save.
6. Decode by faad.exe
Press R key with Windows key to open the dialog.
Type "cmd" and press OK button to open the Command Prompt.
In the command prompt window that was opened, type "cd Downloads" to move the Downloads binder.
Blazon faad.exe "20140615 163625.m4a" and press the Enter key.
In seconds or tens of seconds, you will find the decoded wave file named "20140615 163625.wav".
Cheque if the command histories are like beneath.
7. Encode by faac.exe
In the command prompt window, type faac.exe -b 160 -o repaired.m4a "20140615 163625.wav" and press the Enter central.
In seconds or minutes, you lot volition notice the encoded file named repaired.m4a.
Delight replay the repaired.m4a to meet the audio content is what yous desire.
Check if the command histories are like below.
Did y'all succeed?
If you lot encounter whatever difficulties, please feel free to post a comment.
Repair Service
If you desire u.s. to repair your corrupted files, please send electronic mail to repair_m4a_service@sysfrontier.com
The cost depends on the recording length recovered as shown below:
| Length recovered | Fee |
| 0 – 15 minutes | $10 |
| xv – hr | $20 |
| 1 – 2 hours | $thirty |
| more than ii hours | $40 |
It usually takes one or ii days to repair a file. If information technology is urgent, we can repair it within a few hours, but the additional fee, $xx, is required.
Y'all tin pay the fee via PayPal.
If the file is very large, please upload it to Dropbox, Google Bulldoze, or WeTransfer and send us the share link.
Donation
If you succeeded in repairing your files past post-obit the methods described in this article, that is our pleasure. And if you lot take willingness to donate some to united states of america, the pleasure will be doubled❗😃
Individual Policy
We don't disclose any information included email and audio files
without client's permission.
We will delete completely all the files, which are original corrupted files,
temporary files for repair work and repaired files, later nosotros provided
the service or the customer canceled the service.
Company Data
SysFrontier Inc.
3-23-16, Ekoda, Aoba Ward, Yokohama, 225-0005, Japan.
Run across the company profile for more details.
Source: https://sysfrontier.com/en/2014/12/31/hello-world/
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