I'm not able to read audio file >4GB

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Francesco Lucarelli
Francesco Lucarelli on 27 Oct 2021
Answered: Jan on 28 Oct 2021
Hi everyone,
i'm not able to read audio file >4GB in Matlab.
Is there any reason why? I have the same issue with other softwares
Thanks a lot in advance
Francesco
  2 Comments
Francesco Lucarelli
Francesco Lucarelli on 27 Oct 2021
Hi Jan, the audio is a .wav. The file is 5,080,322,048 bytes. The max file that i can read is 4,294,961,924 bytes. So, pretty close to the number you said.
So you think is related to the limit of a FAT32 formated disk? Could you tell me more on this please?
Thanks a lot for your help
Best,
Francesco

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Accepted Answer

Jan
Jan on 28 Oct 2021
If you can store a 5GB file on the disk, the disk cannot be formated in FAT32. This means, that the limit is caused by the file format or the function, which imports the file. See https://en.wikipedia.org/wiki/WAV :
The WAV format is limited to files that are less than 4 GiB, because of its use of a 32-bitt unsigned integer to record the file size header.
The W64 format solves this problem, but it cannot be opened from all programs. See https://en.wikipedia.org/wiki/RF64

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