So a lot of info tools seem to analyse the data rather than use the
header? ffmpeg clearly does and shows 24bit. Below is the mediainfo
output. That would be from analysing the audio stream rather than the
header? I would like to be able to have a closer look at the header. Are
there any tools you would suggest? Preferably linux or mac.
Code:
--------------------
General
Count : 322
Count of stream of this kind : 1
Kind of stream : General
Kind of stream : General
Stream identifier : 0
Count of audio streams : 1
Audio_Format_List : ALAC
Audio_Format_WithHint_List : ALAC
Audio codecs : Lossless
Complete name : test.m4a
File name : test
File extension : m4a
Format : MPEG-4
Format : MPEG-4
Format/Extensions usually used : mp4 m4v m4a m4b m4p 3gpp 3gp 3gpp2
3g2 k3g jpm jpx mqv ismv isma f4v
Commercial name : MPEG-4
Format profile : Apple audio with iTunes info
Internet media type : audio/mp4
Codec ID : M4A
Codec ID : M4A (isom/iso2)
Codec ID/Url : http://www.apple.com/itunes/
CodecID_Compatible : isom/iso2
Codec : MPEG-4
Codec : MPEG-4
Codec/Extensions usually used : mp4 m4v m4a m4b m4p 3gpp 3gp 3gpp2
3g2 k3g jpm jpx mqv ismv isma f4v
File size : 113994116
File size : 109 MiB
File size : 109 MiB
File size : 109 MiB
File size : 109 MiB
File size : 108.7 MiB
Duration : 520147
Duration : 8mn 40s
Duration : 8mn 40s 147ms
Duration : 8mn 40s
Duration : 00:08:40.147
Duration : 00:08:40.147
Overall bit rate mode : VBR
Overall bit rate mode : Variable
Overall bit rate : 1753260
Overall bit rate : 1 753 Kbps
Stream size : 26695
Stream size : 26.1 KiB (0%)
Stream size : 26 KiB
Stream size : 26 KiB
Stream size : 26.1 KiB
Stream size : 26.07 KiB
Stream size : 26.1 KiB (0%)
Proportion of this stream : 0.00023
HeaderSize : 32
DataSize : 113967429
FooterSize : 26655
IsStreamable : No
Title : Wrecking Ball
Album : 2009/11/08 New York, NY
Album/Performer : Bruce Springsteen & The E Street
Band
Part/Position : 1
Track name : Wrecking Ball
Track name/Position : 1
Performer : Bruce Springsteen & The E Street
Band
Genre : Rock
Recorded date : 2009
Encoded date : UTC 1904-01-01 00:00:00
Tagged date : UTC 1904-01-01 00:00:00
File last modification date : UTC 2018-06-21 13:03:16
File last modification date (local) : 2018-06-21 23:03:16
Writing application : Lavf56.40.101
Writing application : Lavf56.40.101
Copyright : 2009, Bruce Springsteen & The E
Street Band
Comment : powered by nugs.net
Audio
Count : 272
Count of stream of this kind : 1
Kind of stream : Audio
Kind of stream : Audio
Stream identifier : 0
StreamOrder : 0
ID : 1
ID : 1
Format : ALAC
Commercial name : ALAC
Codec ID : alac
Codec ID/Info : Apple Lossless Audio Codec
Codec ID/Url :
http://www.apple.com/quicktime/download/standalone.html
Codec : alac
Codec : Lossless
Codec/Info : Apple Lossless Format (similar to
FLAC)
Codec/Url :
http://www.apple.com/quicktime/download/standalone.html
Codec/CC : alac
Duration : 520147
Duration : 8mn 40s
Duration : 8mn 40s 147ms
Duration : 8mn 40s
Duration : 00:08:40.147
Duration : 00:08:40.147
Duration_LastFrame : -45
Duration_LastFrame : -45ms
Duration_LastFrame : -45ms
Duration_LastFrame : -45ms
Duration_LastFrame : -00:00:00.045
Bit rate mode : VBR
Bit rate mode : Variable
Bit rate : 1752849
Bit rate : 1 753 Kbps
Nominal bit rate : 2304000
Nominal bit rate : 2 304 Kbps
Channel(s) : 2
Channel(s) : 2 channels
Sampling rate : 48000
Sampling rate : 48.0 KHz
Samples count : 24967056
Frame count : 6096
Resolution : 24
Resolution : 24 bits
Bit depth : 24
Bit depth : 24 bits
Stream size : 113967421
Stream size : 109 MiB (100%)
Stream size : 109 MiB
Stream size : 109 MiB
Stream size : 109 MiB
Stream size : 108.7 MiB
Stream size : 109 MiB (100%)
Proportion of this stream : 0.99977
Default : Yes
Default : Yes
Alternate group : 1
Alternate group : 1
Encoded date : UTC 1904-01-01 00:00:00
Tagged date : UTC 1904-01-01 00:00:00
--------------------
------------------------------------------------------------------------
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View this thread: http://forums.slimdevices.com/showthread.php?t=102059
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