Both ALAC and AAC files use suffix .m4a How does Sonos differentiate between these two formats
Answered
Playing .m4a files
Best answer by ratty
From the metadata, in the file header.
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From the metadata, in the file header.
.m4a is a container and Sonos devices will play .alac (lossless) or aac (lossy) from devices at the bitrates shown in this Sonos support document:
Thanks - I now understand that Sonos differentiates .m4a files as to whether they are ALAC and AAC from the metadata in the file header that identifies the bitrate available.
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