The setting for "Encoding Quality" appears to be ignored In the dialog box "Device Profile" / "Auto-conversion rule" / "MP3 Settings".
This setting presumably maps to the LAME encoder "-q" param:
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-q <arg> <arg> = 0...9. Default -q 5
-q 0: Highest quality, very slow
-q 9: Poor quality, but fast
I'm using a single FLAC song as a test file. From the command line, I can decompress FLAC to WAV in less than 4 seconds. I can then compress WAV to MP3 in another 4 seconds:
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flac -d a.flac <-- less than 4 seconds
lame -b 128 -q 9 a.wav a.mp3 <-- approx. 4 seconds
But no matter what settings I give to MM, it takes at least 25 seconds to convert the same FLAC file to MP3. And no matter what settings I give for "Encoding Quality", I seem to get exactly the same output file size and exactly the same encoding time. (Note I'm referring just to transcoding and not to actually copying to the device).
I'd really like to accelerate my transcoding, and I can't figure out why I can transcode a file in less than 8 seconds on the command line, but MM (v2.5.1.934) takes 3x or more time! Please help!
-=og=-