I am not sure your source of the m4a files is or what your music player is and can handle, I assume you are playing both files on the same server.
I have done a bit of reading, and don't think that there is an easy answer. m4a is a container which can handle ALAC (lossless) and AAC (compressed) music. The two mode in AAC being LC & HE. With HE being a later more complex form of compression. https://www.reddit.com/r/audiophile/comments/18b0yg/aac_vs_heaac_what_is_the_difference_which_should/ in the Inguz custom.conf this transcoding used will depend on player capabilities. Essentially if it can handle flac the output will be 24 bit flac, if not you get 16 bit wav. Assuming the player can handle flac the line will look like this. [faad] -q -w -f 1 $FILE$ | [InguzDSP] -id "xx:xx:xx:xx:xx:xx" -wav -wavo -d 24 | [flac] -cs -0 --totally-silent - The first part of this line "[faad] -q -w -f 1 $FILE$" converts the inbound file format to wav format for Inguz to process. So The additional settings for faad may not be able to handle AAC HE formatting or the faad executable itself may be the problem. I also note that you are using C3PO plugin, which also is used to help setup transcoding. In my experience using this in conjunction with Inguz does not work well and you end up with unpredictable results. I understand that custom.conf get loaded before the main conf, and I think C3PO will potentially compete with Inguz settings. Given that C3PO gives multiple options to convert a file, I think what is happening is that the server will pick the easiest one for the file type and use that. So my suggestion would be to disable C3PO for the player in question and retry that. I will have a look at the switches for FAAD and see if there is a one-size fits all, but I barely have any apple music so it is not something I want to spend a lot of time on. If you are able to identify a revised command for FAAD I can certainly look at incorporating it. ------------------------------------------------------------------------ foxesden's Profile: http://forums.slimdevices.com/member.php?userid=56286 View this thread: http://forums.slimdevices.com/showthread.php?t=109921 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/audiophiles
