Size limits for WAV and AIFF files

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WAV and AIFF files are limited to a maximum size of 4GB, see the following table for how this translates to time durations

Approximate maximum time durations for WAV and AIFF PCM-encoded files

Maximum sizes for files in time duration (hours:minutes)
Sample Format Stereo Mono
16-bit (default) 6h:45m 13h:31m
24-bit 4h:30m 9h:01m
32-bit 3h:22m 6h:45m
Tip These timings are the theoretical maximum times. You would be well-advised to restrict yourself to slightly lower limits to afford some head-room.