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Transcoding from simple stereo MP3, should destination use simple too?, [was “dbpoweramp settings, need help!”/TOS #6]
post Sep 19 2012, 16:00
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I have a small problem here: I want to re-encode my MP3's from 320CBR to -V2 with dbpoweramp (lame 3.99.5) but here is the trick: I have MP3's at 320CBR Stereo and MP3's ar 320CBR Joint Stereo. All I want is that Stereo\Joint Stereo remains the same, only quality modify to -V2. So, when I choose from dbpoweramp\advanced\channels I choose [auto] but this modify my MP3 always to Joint Stereo. Also I choose Stereo (auto) (CD) but it's the same, final MP3 is Joint Stereo from Stereo source.
What should I pick from channels option? (Force Stereo I suppose it's not the way to go, or is?) I've tested another ripper/converter and it was more simple: when I choose Joint Stereo - MP3 is JS, when I choose Stereo - MP3 is Stereo.

Also I have one more important question: It is right what I do? (keep the same type after re-encoding, Stereo - Stereo, Joint Stereo - Joint Stereo) (*please note that I convert MP3 to MP3)

Thank you, Daniel

This post has been edited by daniel.ok: Sep 19 2012, 16:01
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post Sep 19 2012, 19:16
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Your question has been previously answered regarding the use of stereo and joint stereo (hint: its the second option). You were pointed to the Wiki articles as they contained information to help you determine the proper settings along with gaining insight into what you were asking. People often come on and ask "What's the best setting for X encoder and A, B, and C type of music?" There isn't an absolute answer for anyone. However, it is generally best to use the default Lame settings unless you are experiencing problems (that can be heard in proper blind ABX testing) and insist on tuning them out. Lame is also a great VBR mp3 encoder and you can likely get away with not using such an insanely high bitrate. Again, unless you can properly ABX it, 320kbps VBR is probably going to be overkill. I suggest starting out with your source lossless material and use the -V 5 setting (maybe even -V 6). Conduct a blind ABX test with a few songs comparing the source lossless versions to their lossy counterparts. "Pass" the test and encode the material at a higher setting. Keep progression (-V 6 to -V 5, -V 5 to -V 4, -V 4 to -V 3, etc.) until you fail the test. Here is is a link covering the ABX process:

Then again, I know how you hate getting links as answers so I am not expecting you to read it.
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