Merging Pyramix - File Interchange - Formats

File and Project Interchange : File Interchange - Formats
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File Interchange - Formats
http://forum.merging.com/viewtopic.php?f=23&t=1414
File Size Limitations
By design SD2 and legacy WAV or BWF files are limited to a maximum of 2GB, sometimes 4GB due to their 32bit
signed addressing (thus 31 available bits) formats, while 32bits unsigned addressing AIF files are limited to 4GB.
File
Formats
File
Extension
Play Rec Export
Audio
Data
Format
Max # of
Channels
in a single
file
Interleave
Max Bit
depth
Max
Sample
Rate
Max
File
Size
Unique
Identifier
(UID)
Data Chunk
(metadata)
format
PMF
pmf
yy y PMF
Virtually
Unlimited
(note1)
block 32bit float 384 kHz
virtually
unlimited
in Name
& PMF
PMF
(Proprietary)
PMF (DXD)
pmf
y y y PMF Currently
up to 48
block 32bit float 352.8 kHz
virtually
unlimited
in Name
& PMF
PMF
(Proprietary)
WAV
wav
yy y WAV
Virtually
Unlimited
(note1)
y 32bit float 384 kHz 4GB in iXML iXML
BWF
wav
yy y WAV
Virtually
Unlimited
(note1)
y 32bit float 384 kHz 4Gb in BWF BWF & iXML
WAV
wav
yy y RIFF64
Virtually
Unlimited
(note1)
y 32bit float 384 kHz
virtually
unlimited
in iXML iXML
BWF
wav
yy y RIFF64
Virtually
Unlimited
(note1)
y 32bit float 384 kHz
virtually
unlimited
in BWF BWF & iXML
AIF
aif
yy y AIF
Virtually
Unlimited
(note1)
y 32bit float 384 kHz 4GB n n
SD2
(note 3)
sd2
yy y SD2
Virtually
Unlimited
(note1)
y 24bit 48kHz 2GB n n
PMI
pmi
yyWAV
Virtually
Unlimited
(note1)
y 32bit float 384 kHz
virtually
unlimited
CD TOC
OMF
omf
yy y
WAV
or AIF
y 32bit float 384 kHz 2GB n n
MXF
mxf
yy y
AES3
or WAV
y 32bit float 384 kHz
AVI
avi
y WAV y 32bit float 384 kHz
QuickTime
(note 2)
mov
y PCM 32bit float 192 kHz
DSDIFF
dff
yy y DSD64
Currently
up to 16
y 1bit 2822 kHz
virtually
unlimited
n
PMF
(Proprietary)
DSDIFF Em
dff
yyDSD64
Typically
2, 5 or 6
y 1bit 2822 kHz
virtually
unlimited
n
PMF
(Proprietary)
n=not supported
y=supported
Pyramix Supported Audio Files
note 1: While both block interleaved and sample interleaved formats may theoretically accept an unlimited number of
channels, disk performance of multichannel sample interleaved files w ill degrade severely over 24 to 32 tracks
note 3: Bew are of the fragile data fork / resource tw in file structure of (MacOS) SD2 file format, requiring special care to
be handled properly in a PC. More on this topic at the follow ing URL:
note 2: QuickTime Pro is required for the QuickTime handler to w ork correctly.