Re-encoding, with goal of "preserving quality" Options

[twipley]

Hello everyone. I am sure you people are receiving such questions month after month, however I have done a quick search and have not found exactly what I am looking for, so I thought maybe of opening a new topic and seeing what you guys had to say.

Also please keep in mind that I am not too savvy in this domain. What I am looking to do basically is converting the audio of family-camera videos to CBR, so as to fix some sync issue I have stepped on (c.f. http://forum.doom9.org/showthread.php?p=1412005).

More to the point, my audio files currently are under "22050 Hz, 256 kbps ABR, stereo," and to fix the issue I have stepped on I apparently will have to convert them to "44100 Hz Stereo CBR." I wanted to know the necessary bitrate (kbps) for the preservation of audio quality, with the advantage of avoiding dwelling too much into "overkill."

Put into more succinct a manner, would a choice of 320 kbps, always with the goal of "avoiding potential degradations in audio quality," seem like a sound one?

P.S.: here is a common example (i.e. with "variable" bitrates averaging the one hundred fifties) of audio information outputted from the talked-about videos:

Audio
ID : 1
Format : MPEG Audio
Format version : Version 2
Format profile : Layer 3
Mode : Joint stereo
Mode extension : MS Stereo
Codec ID : 55
Codec ID/Hint : MP3
Duration : 3mn 38s
Bit rate mode : Variable
Bit rate : 148 Kbps
Channel(s) : 2 channels
Sampling rate : 22.05 KHz
Stream size : 3.88 MiB (11%)
Alignment : Split accross interleaves
Interleave, duration : 34 ms (1.01 video frame)
Interleave, preload duration : 859 ms

Thanks,
twipley

This post has been edited by twipley: Jun 28 2010, 19:58