Poškozený soubor m4a 65MB- umí někdo opravit?
Dobrý den, umí někdo opravit poškozený hlasový záznam ve formátu .m4a 65MB? Byl pořízen pomocí hlasového záznamníku na telefon, zřejmě poškozený nesprávným ukončením při vybití telefonu. Ideálně rovnou převést do .mp3, ale to už snad zvládnu.
Děkuji Tomáš
Někam to ulož.
https://uloz.to/!cg3UkyZ4bBMn/recording-1-1-m4a
Neumím.
Nepodarilo se ani podle tohoto navodu:
http://sysfrontier.com/en/2014/12/31/hello-world/
rec.m4a file info:
RAW
---------------------
| Config: 2 Ch |
---------------------
| Ch | Position |
---------------------
| 00 | Left front |
| 01 | Right front |
---------------------
Error: First SBR frame is not the same as first AAC frame
A vznikne z toho akorat 17 kilo velky wav. Asyk je to poskozene a nepouzitelne..?
Opravit to asi jde, ale všude, kde jsem to zkusil, chtějí za to peníze.
Zkousel jsem a zatim prd.
RecoverIt - neumi opravit konkretni soubor, vzdy hleda soubory na poskozenem disku.
Ty SW hledaji a pokouseji se obnovit smazane/poskozene soubory, pokud o ne prijdes (treba poskozenym HDD).
Ale neumi, (alespon se zadnym to zatim neslo), opravit poskozeny soubor jako takovy...
Ta moje citace výše je z toho jeho souboru.
How to recover audio from an incomplete or corrupted AAC/m4a file a odkazy.
mozes skusit:
How to fix corrupted voice memo (m4a) files.
Do you have broken voice memo files? You can fix those files by yourself. I will show you the steps in this article. Voice memo files have the extension “m4a”. It is audio data encoded in the AAC format and encapsulated in MPEG4 file container. You may fix files recorded with other programs like QuickVoice or on Android. File extensions may be mp4 or 3gp.
The m4a files get broken when some parts of header lost correct information. For 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.
But, 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.
Let’s do it together.
STEPS for Windows PC
Download faad.exe
Open http://rarewares.org/aac-decoders.php Click “Download (225kB)” of “FAAD2v20100614 CVS snapshot for Win32“. faad
Extract faad.exe from the downloaded zip file. Place it in the “Downloads” folder, for example.
Download faac.exe
Open http://rarewares.org/aac-encoders.php Click “Download (191kB)” for “FAACv1.28 Binary for Win32“.faac
Extract faac.exe from the downloaded zip file. Place it in the same folder as above.
For example, you see faad.exe and faac.exe in the Downloads folder as below. downloads
Download binary editor
You can choose any favorite binary editor. If you don’t know well, I will recommend HxD. Download a zip 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.
Place the file to the same directory.
Move your voice memo file from your iPhone to PC via iTunes. You can use other tools like iFunbox.
Please place the copied file to the same directory as where you placed the above faad.exe and faac.exe. We call the file “20140615 163625.m4a”, for example.
Open the file with binary editor.
Please copy the broken m4a file to some folder 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 Find button.
Select from the beginning of the file to the “t” of “mdat” as shown below.
find_mdat
Press Delete key to delete the selected area. Press S key with control key to save.
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 folder. Type 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“.
Check if the command histories are like below. cmd1
Encode by faac.exe
In the command prompt window, type faac.exe -b 160 -o repaired.m4a “20140615 163625.wav” and press the Enter key.
In seconds or minutes, you will find the encoded file named repaired.m4a. Please replay the repaired.m4a to see the audio content is what you want.
Check if the command histories are like below. cmd2
Company Information
SysFrontier Inc. 3-23-16, Ekoda, Aoba Ward, Yokohama, 225-0005, Japan.
To je to samé, co psal Abox.
pravda, tak asi nic.
Active File recovery - nic (hleda a obnovuje soubory na HDD)
Lavasoft Recovery Suite - nic (hleda a obnovuje soubory na HDD)
7-Data Recovery Suite Enterprise - nic (hleda a obnovuje soubory na HDD)
Hetman Data Recovery Pack - nic (hleda a obnovuje soubory na HDD, opravuje FAT, NTFS, Excel, Word, Photo, Office, Partition)
Tohle bude chtit, (pokud vubec existuje), SW na opravu m4a.
Skús to tu: https://app.aeroquartet.com/
Súbor má vraj trvanie 91 minút, po diagnostike nejaké sample mi to vytvorilo, nejakí ľudia tam čosi mluvia...Treba sa ale zaregistrovať (free), potom z toho asi niečo bude... Mne sa to nechce sa s tým prcať...
Opravit by to mozno aj islo, ale len manualne. Ziadny program nema taku inteligenciu aku ma clovek, ktory vie na akom hardware to bolo nahrate a ako bol ten hw nastaveny pre zaznam. Predpokladam, ze ti chyba hlavicka, alebo identifikator z ktoreho si prehravac berie udaje o formate, vzorkovani, kanaloch, velkosti a pod. Je mozne to zobrat aj z ineho suboru skopcenim v hexaeditore. Tipujem, ze ked sa do toho pustis a po desiatich pokusoch nebudes uspesny, tak sa na to vybodnes. Ja som tak opravil aj nekompletne stiahnute videosubory, ale da to zabrat. Je to makacka. Nie kazdy ma trpezlivost sa s tym bafkat nejaky tyzden, dva, alebo aj viac.
Hlavicka tam prave je a tim HEXa editorem ji mas odstranit...ale pak to zase rve tu chybu.
Cili tipuji, ze uz ten obsah pak je na pikacu...
Tak to s tym odstranenim hlavicky som vazne nepochopil. Ono odstranit hlavicku aj u nieco jednoduchsieho napriklad WAV vyzaduje znalost ako su tie data zapisane. Ako to ma vediet prehravaci program bez hlavicky?
Do hlavicky sa zapisuje aj po skonceni zaznamu a to tam bude asi chybat. Inak povedane ta hlavicka obsahuje chybne informacie.
Tak je to popisovano v tom postupu, co s tim mas delat.
Zrejme ten Faad umi pracovat s temi "syrovymi" daty.
Kazdopadne pozna dve stopy, ale pak uz asyk nasleduje neco, cemu uz nerozumi..?
Ja nevim, nejsem tvurce m4a