ref: 3a38fe22ccb9b45bbe37642ae9f37c286173afa4
parent: 8aecd0c07ff455eef781710576c9ca9614ba1000
author: Krzysztof Nikiel <knik@users.sourceforge.net>
date: Tue Aug 22 13:11:16 EDT 2017
updated help
--- a/docs/faac.1
+++ b/docs/faac.1
@@ -60,15 +60,17 @@
.TP
.BR -q\ <\fIquality\fP>
Set encoding quality. Set default variable bitrate (VBR) quality level in percent.
-(default: 100, averages at approx. 120 kbps VBR for a normal stereo input file with 16 bit and 44.1 kHz sample rate; max value 2000, min 10).
+max. 5000 (mp4) or 500 (adts), min. 10.
+default: 100, averages at approx. 120 kbps VBR for a normal
+stereo input file with 16 bit and 44.1 kHz sample rate
.TP
.BR -b\ <\fIbitrate\fP>
Set average bitrate (ABR) to approximately <bitrate> kbps.
-(max. value 152 kbps/stereo with a 16 kHz cutoff, can be raised with a higher -c setting).
+max. ~500 (stereo mp4) or ~250k (adts)
.TP
.BR -c\ <\fIfreq\fP>
-Set the bandwidth in Hz. (default 0.42 of sampling freq)
-
+Set the bandwidth in Hz.
+The actual frequency is adjusted to maximize upper spectral band usage.
.SH INPUT/OUTPUT OPTIONS
.TP
.BR -o\ <\fIfilename\fP>
--- a/frontend/main.c
+++ b/frontend/main.c
@@ -108,14 +108,16 @@
static help_t help_qual[] = {
{"-q <quality>\tSet encoding quality.\n",
"\t\tSet default variable bitrate (VBR) quantizer quality in percent.\n"
- "\t\t(default: 100, averages at approx. 120 kbps VBR for a normal\n"
- "\t\tstereo input file with 16 bit and 44.1 kHz sample rate; max.\n"
- "\t\tvalue 2000, min. 10).\n"},
- {"-b <bitrate>\tSet average bitrate to x kbps. (ABR, lower quality mode)\n",
+ "\t\tmax. 5000 (mp4) or 500 (adts), min. 10.\n"
+ "\t\tdefault: 100, averages at approx. 120 kbps VBR for a normal\n"
+ "\t\tstereo input file with 16 bit and 44.1 kHz sample rate\n"
+ },
+ {"-b <bitrate>\tSet average bitrate to x kbps. (ABR)\n",
"\t\tSet average bitrate (ABR) to approximately <bitrate> kbps.\n"
- "\t\t(max. value 152 kbps/stereo with a 16 kHz cutoff, can be raised\n"
- "\t\twith a higher -c setting).\n"},
- {"-c <freq>\tSet the bandwidth in Hz. (default 0.42 of sampling freq)\n"},
+ "\t\tmax. ~500 (stereo mp4) or ~250k (adts)\n"},
+ {"-c <freq>\tSet the bandwidth in Hz.\n",
+ "\t\tThe actual frequency is adjusted to maximize upper spectral band\n"
+ "\t\tusage.\n"},
{0}
};
@@ -345,7 +347,7 @@
if (g_help[cnt].id == mode)
{
printf("%s:\n", g_help[cnt].name);
- help0(g_help[cnt].help, 0);
+ help0(g_help[cnt].help, 1);
break;
}
break;