Converting to Opus: 44.1 kHz resampled to 48 kHz Options

[gurkburk]

So i have a bunch of regular 44100 flac files that i'de like to convert to OPUS file so i have something to listen to when i run, that's not very hard to setup following this guide.
http://www.saunalahti.fi/~cse/Opus/

What does concern me is that opusenc.exe seems to default to a samplingrate of 48000 when you feed it a raw stream (the '-' option as seen in the guide seems to do that) it's easy to see that the .opus files do indeed become converted/upsampled to 48000hz using this method.
So my question is, should i override this behavior by adding --raw-rate 44100 to the encoder?
Does it matter at all that the files get upsampled? Could it introduce noise or other unwanted side effects?

Thanks

(yes i know that there aren't many android players yet avail for playback of opus, but the question still remains)
Also i think this post belongs to this forums, at least it seemed like it was a good fit, but if i'm wrong please move it :\


This post has been edited by gurkburk: Sep 17 2012, 18:41

[Dynamic]

Thanks again for the corrections, NullC. You know your stuff. I'll rein myself in! I guess that means that if anyone has opus (or Vorbis) files that don't playback gaplessly and glitchlessly, they should provide examples with ABX logs against the join in the lossless originals.

The sample-accurate lengths for CD-sourced material resampled to 48kHz does mean however that it doesn't matter in the slightest whether the decoder plays back at 48kHz or resamples back to the original 44.1 kHz - it's still precise.