What is a .BW64 file?
BW64 is an ITU broadcast-WAV format for audio files larger than 4 GB.
- Did you know
- BW64 carries large broadcast audio along with rich production metadata.
- BW64 sidesteps the 4 GB limit of classic WAV by adding a “ds64” chunk that records the data size as a 64-bit value.
- Standardised by the ITU as Recommendation BS.2088, BW64 was designed to carry the XML-based Audio Definition Model for object-based audio.
- What Analyser reads
- Identify many more audio formats: lossless/hi-res codecs (Monkey’s Audio, WavPack, TAK, True Audio, DSD/SACD, Musepack), pro containers (Core Audio, RF64/BW64, Wave64, Sun AU, Broadcast Wave with timecode), speech/mobile (Speex, AMR-WB, QCP, 3GA, M4R, GSM), MPEG Layer I/II, instrument banks (SoundFont, SFZ, DLS, RIFF MIDI, GigaStudio), ringtones (RTTTL, iMelody, SAP), tracker modules (MOD, XM, IT, S3M, OctaMED, 669, Oktalyzer), chiptunes (NES NSF, SNES SPC, VGM, Game Boy GBS, AY, YM) and Audacity projects.
- Depth of analysis
- .BW64 is an identification-grade format: Analyser recognises it from its bytes and decodes the header metadata it carries, rather than opening it in a full viewer. Formats that do get a full viewer are marked "Full" on the formats page.
- Open a .BW64 file
- Drag a .BW64 file onto the Analyser home page (or tap to pick one). It is identified entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.