update help message regarding vbr mode

This commit is contained in:
nu774 2023-03-14 00:24:51 +09:00
parent d705c888cf
commit f95566ee8e
1 changed files with 3 additions and 4 deletions

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@ -121,10 +121,9 @@ PROGNAME " %s\n"
" -m, --bitrate-mode <n> Bitrate configuration\n"
" 0: CBR (default)\n"
" 1-5: VBR\n"
" (VBR mode is not officially supported, and\n"
" works only on a certain combination of\n"
" parameter settings, sample rate, and\n"
" channel configuration)\n"
" (VBR mode 1 is tuned for HE-AAC v2\n"
" VBR mode 2 is tuned for HE-AAC\n"
" VBR mode 3 or greater is for AAC LC)\n"
" -w, --bandwidth <n> Frequency bandwidth in Hz (AAC LC only)\n"
" -a, --afterburner <n> Afterburner\n"
" 0: Off\n"