Write a buffer.
- iOS 8.0+
- macOS 10.10+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 3.0+
The buffer from which to write to the file. Its format must match the file’s processing format.
Returns, by-reference, a description of the error, if an error occurs.
true, if the write was successful.
Writes sequentially. The buffer’s
frame signifies how much of the buffer is to be written.