RF64 is a BWF-compatible multichannel file format enabling file sizes to exceed 4
GiBThe gibibyte is a standards-based binary multiple of the byte, a unit of digital information storage...
. It has been specified by the
European Broadcasting UnionThe European Broadcasting Union is a confederation of 75 broadcasting organisations from 56 countries, and 43 associate broadcasters from a further 25. It is unrelated to the European Union. Members are radio and television companies, most of which are government-owned public service broadcasters...
.
The file format is designed to meet the requirements for multichannel sound in broadcasting and audio
archiving. It is based on the Microsoft RIFF/
WAVE formatWAV , short for Waveform audio format, also known as Audio for Windows, is a Microsoft and IBM audio file format standard for storing an audio bitstream on PCs. It is an application of the RIFF bitstream format method for storing data in “chunks”, and thus is also close to the 8SVX and the AIFF...
and Wave Format Extensible for multichannel
parameters. Additions are made to the basic specification to allow for more than 4
GiBThe gibibyte is a standards-based binary multiple of the byte, a unit of digital information storage...
file sizes when
needed.
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RF64 is a BWF-compatible multichannel file format enabling file sizes to exceed 4
GiBThe gibibyte is a standards-based binary multiple of the byte, a unit of digital information storage...
. It has been specified by the
European Broadcasting UnionThe European Broadcasting Union is a confederation of 75 broadcasting organisations from 56 countries, and 43 associate broadcasters from a further 25. It is unrelated to the European Union. Members are radio and television companies, most of which are government-owned public service broadcasters...
.
The file format is designed to meet the requirements for multichannel sound in broadcasting and audio
archiving. It is based on the Microsoft RIFF/
WAVE formatWAV , short for Waveform audio format, also known as Audio for Windows, is a Microsoft and IBM audio file format standard for storing an audio bitstream on PCs. It is an application of the RIFF bitstream format method for storing data in “chunks”, and thus is also close to the 8SVX and the AIFF...
and Wave Format Extensible for multichannel
parameters. Additions are made to the basic specification to allow for more than 4
GiBThe gibibyte is a standards-based binary multiple of the byte, a unit of digital information storage...
file sizes when
needed. The format is transparent to the BWF and all its supplements and chunks.
A maximum of 18 surround channels, stereo down mix channel and bit stream signals with non-PCM coded data
can also be stored in the file format. RF64 can be used in the entire programme chain from capture to editing
and play out and for short or long term archiving of multichannel files.
The RF64 file format should fulfill the longer-term need for multichannel sound in broadcasting and archiving.
The required effort for software implementers is very small. The changes that will be needed to update
existing systems will be reasonable in cost.
An RF64 file with a bext chunk becomes an MBWF-file. The terms ‘RF64’ and ‘MBWF’ can then be considered
synonymous.