.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 its 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 metadata 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 metadata is used for .MOV files, iTunes format for .M4A files, and 3GPP-format for .3GP files.
Features:
- .MOV: 8 / 16 / 24 / 32 bit PCM / 32 / 64 bit floats / μ-law / A-law / Apple MACE3 / MACE6 / IMA 4-bit ADPCM / MS 4-bit ADPCM / MPEG audio layer III / GSM 06.10 / MPEG-4 AAC / AMR / Apple Lossless (ALAC) / AC3 / DTS, mono / stereo / multi-channel, text info.
- .MP4: AMR / MPEG-4 AAC, mono / stereo.
- .M4A/.M4R: MPEG-4 AAC / Apple Lossless (ALAC, read-only), mono / stereo, text info.
- .3GP: AMR, mono, text info.
- .3G2: AMR / MPEG-4 AAC, mono / stereo.
Supported by: