The mflac and flac formats of QQ Music are different in terms of decoding speed.

Because of the different encoding methods, it affects the decoding speed of the two lossless compression formats, and in general the decoding speed of FLAC is 30% faster than that of APE.

The reason for this is that FLAC performs only integer arithmetic, rather than floating-point arithmetic, which takes up a higher frequency and a greater amount of data processing on the system. Because of this construction, real-time decoding can be perfectly implemented in general hardware.

Features of the flac format:

The encoded audio (PCM) data has no loss of information, and the decoded output is identical to every byte of the encoder's input. Each data frame has a 16-bit CRC checksum of the current frame to monitor for data transmission errors. For the entire audio data, an MD5 against the original uncompressed audio data is also stored in the file header.