.MOV - Apple QuickTime movie format
.MP4 - MPEG-4 base media file format
.M4A - iTunes MPEG-4 audio format
.M4R - iPhone ring-tone
.3GP - 3GPP file format
.3G2 - 3GPP 'project 2' file format

These are all closely related formats - with various individual variations, restrictions, or extensions. Only audio tracks will be read by this program - video is ignored (if there's more than one audio track then each will appears as it's own waveform).

Notes:

• The following audio data type 'tags' are supported for reading: 'NONE', 'raw', 'twos', 'sowt', 'lpcm', 'in24', 'in32, 'fl32', 'fl64', 'ulaw' 'alaw', 'mac3', 'mac6', 'ima4', 'ms\17', 'ms\2', '.mp1', '.mp2', '.mp3', 'ms\85', 'agsm', 'samr', 'mp4a', 'alac'. NB; only a sub-set of these are supported for writing..
  


• .MOV files using multi-channel audio and/or sample rates > 64000 Hz is supported only with newer versions of QuickTime.
  


• Reading (but not writing) files using 'zlib compressed moov atoms' is supported.
  


• Reading (but not writing) so called 'fragmented' files is supported.
  


• Several types of text meta data is supported when reading: The original QuickTime-format (usually found in .MOV files); The 'iTunes'-format (usually found in .M4A files); The 3GPP-format (sometimes found in .3GP files); The ID3v2 format (found in some .MP4 and .3GP files). When writing, QuickTime-format meta data is used for .MOV files, iTunes format for .M4A files, and 3GPP-format for .3GP files.

Required 3^rd party software:

• For files using MPEG AAC compression: AAC encoding and decoding is not part of this program per se - but it can talk to certain 3^rd party software (external DLL's) to allow you to seamlessly handle this compression.
  
  
  • To read .AAC files, you need to get hold of a copy of the DLL version of the open source 'FAAD 2' decoder and copy the file 'libfaad2.dll' into the directory where you installed the program.
    
  
  
  • To write .AAC files, you need to get hold of a copy of the DLL version of the open source 'FAAC' decoder and copy the file 'libfaac.dll' into the directory where you installed the program.
    
  
  
  Please note that these external DLL's are not provided by FMJ-Software. You should be able to find them easily if you do a web-search for libfaad2.dll and libfaac.dll. However, you should also be aware that in some countries it is necessary for you to also obtain several very expensive patent licenses before you can legally use AAC technology.
  
  
• For files using 3GPP AMR compression: In order to read or write AMR data you need to install the 'AMR.dll' add-on file. You'll find it here... Simply copy the .dll file to the same directory where you installed the program.

Features:

• .MOV: 8 / 16 / 24 / 32 bit PCM, 32 / 64 bit floats, μ-law / A-law, Apple MACE3 / MACE6 compression, IMA 4-bit ADPCM compression, MS 4-bit ADPCM compression, MPEG audio layer III compression, GSM 06.10 compression, MPEG-4 AAC compression, AMR compression, Apple Lossless ALAC, mono / stereo / multi-channel, text info.
  


• .MP4: AMR compression, MPEG-4 AAC compression, mono / stereo.
  


• .M4A/.M4R: MPEG-4 AAC compression, Apple Lossless ALAC (read-only), mono / stereo, text info.
  


• .3GP: AMR compression, mono, text info.
  


• .3G2: AMR compression, MPEG-4 AAC compression, mono / stereo.
  

Supported by:

• Awave Studio (read + write).
• Awave Audio (read + write).
• ACDR (write only).
• Any Time (read + write).