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+.TH ODR-AUDIOENC "1" "March 2022" "odr-audioenc 3.1.1" "ODR-mmbTools"
+.SH NAME
+odr-audioenc \- DAB and DAB+ audio encoder
+.SH SYNOPSIS
+odr-audioenc [OPTION...] 
+.SH DESCRIPTION
+ODR\-AudioEnc is an audio encoder for both DAB and DAB+.
+The encoder can read from JACK, ALSA, a file source,
+libvlc or GStreamer and encode to a ZeroMQ output for ODR\-DabMux.
+.PP
+The \fB\-D\fR option enables sound card clock drift compensation.
+A consumer sound card has a clock that is always a bit imprecise, and
+would drift off slowly. Drift compensation can
+make sure that the encoding rate is correct by inserting or deleting
+audio samples. It can be used for both ALSA and VLC inputs and requires
+a system clock synchronised using NTP.
+When this option is enabled, you will see U and O printed in the
+console. These correspond to audio underruns and overruns caused
+by sound card clock drift. When sparse, they should not create audible
+artifacts.
+.PP
+This encoder is able to insert PAD (DLS and MOT Slideshow)
+generated by ODR\-PadEnc, and communicates using a UNIX socket.
+.SH OPTIONS
+.TP
+\fB\-h\fR, \fB\-\-help\fR
+Print this help text and exit
+.TP
+\fB\-\-version\fR
+Print program version and exit
+.TP
+\fB\-D\fR, \fB\-\-drift\-comp\fR
+Enable ALSA/VLC sound card drift compensation.
+.SS alsa input:
+.TP
+\fB\-d\fR, \fB\-\-device\fR=\fI\,ALSA_DEVICE\/\fR
+Set ALSA input device.
+.SS file input:
+.TP
+\fB\-i\fR, \fB\-\-input\fR=\fI\,FILENAME\/\fR
+Input filename (use \fB\-i\fR \- for stdin).
+.TP
+\fB\-f\fR, \fB\-\-format=\fR{ wav, raw }
+Set input file format (default: wav).
+.TP
+\fB\-\-fifo\-silence\fR
+Input file is fifo and encoder generates silence when fifo is empty. Ignore EOF.
+.SS JACK input:
+.TP
+\fB\-j\fR, \fB\-\-jack\fR=\fI\,NAME\/\fR
+Enable JACK input, and define our name
+.SS VLC input:
+.TP
+\fB\-v\fR, \fB\-\-vlc\-uri\fR=\fI\,URI\/\fR
+Enable VLC input and use the URI given as source
+.TP
+\fB\-C\fR, \fB\-\-vlc\-cache\fR=\fI\,MS\/\fR
+Specify VLC network cache length.
+.TP
+\fB\-g\fR, \fB\-\-vlc\-gain\fR=\fI\,DB\/\fR
+Enable VLC audio compressor, with given compressor\-makeup value.
+Use this as a workaround to correct the gain for streams that are
+much too loud.
+.TP
+\fB\-V\fR
+Increase the VLC verbosity by one (can be given
+multiple times)
+.TP
+\fB\-L\fR OPTION
+Give an additional options to VLC (can be given
+multiple times)
+.SS GStreamer input:
+.TP
+\fB\-G\fR, \fB\-\-gst\-uri\fR=\fI\,URI\/\fR
+Enable GStreamer input and use the URI given as source
+.SS Encoder parameters:
+.TP
+\fB\-b\fR, \fB\-\-bitrate=\fR{ 8, 16, ..., 192 }
+Output bitrate in kbps. Must be a multiple of 8.
+.TP
+\fB\-c\fR, \fB\-\-channels=\fR{ 1, 2 }
+Nb of input channels (default: 2).
+.TP
+\fB\-r\fR, \fB\-\-rate=\fR{ 24000, 32000, 48000 }
+Input sample rate (default: 48000).
+.SS DAB specific options:
+.TP
+\fB\-a\fR, \fB\-\-dab\fR
+Encode in DAB and not in DAB+.
+.TP
+\fB\-\-dabmode\fR=\fI\,MODE\/\fR
+Channel mode: s/d/j/m
+(default: j if stereo, m if mono).
+.TP
+\fB\-\-dabpsy\fR=\fI\,PSY\/\fR
+Psychoacoustic model 0/1/2/3
+(default: 1).
+.SS DAB+ specific options:
+.TP
+\fB\-A\fR, \fB\-\-no\-afterburner\fR
+Disable AAC encoder quality increaser.
+.TP
+\fB\-\-aaclc\fR
+Force the usage of AAC\-LC (no SBR, no PS)
+.TP
+\fB\-\-sbr\fR
+Force the usage of SBR (HE\-AAC)
+.TP
+\fB\-\-ps\fR
+Force the usage of SBR and PS (HE\-AACv2)
+.TP
+\fB\-B\fR, \fB\-\-bandwidth\fR=\fI\,VALUE\/\fR
+Set the AAC encoder bandwidth to VALUE [Hz].
+.TP
+\fB\-\-decode\fR=\fI\,FILE\/\fR
+Decode the AAC back to a wav file (loopback test).
+.SS Output and PAD parameters:
+.TP
+\fB\-o\fR, \fB\-\-output\fR=\fI\,URI\/\fR
+Output ZMQ uri. (e.g. 'tcp://localhost:9000')
+\fB\-or\-\fR Output file uri. (e.g. 'file.dabp')
+\fB\-or\-\fR a single dash '\-' to denote stdout.
+If more than one ZMQ output is given, the socket
+will be connected to all listed endpoints.
+.TP
+\fB\-k\fR, \fB\-\-secret\-key\fR=\fI\,FILE\/\fR
+Enable ZMQ encryption with the given secret key.
+.TP
+\fB\-e\fR, \fB\-\-edi\fR=\fI\,URI\/\fR
+EDI output uri, (e.g. 'tcp://localhost:7000')
+.TP
+\fB\-\-fec\fR=\fI\,FEC\/\fR
+Set EDI output FEC
+.TP
+\fB\-T\fR, \fB\-\-timestamp\-delay\fR=\fI\,DELAY_MS\/\fR
+Enabled timestamps in EDI (requires TAI clock bulletin download) and
+add a delay (in milliseconds) to the timestamps carried in EDI
+.TP
+\fB\-w\fR, \fB\-\-write\-icy\-text\fR=\fI\,FILENAME\/\fR
+Write the ICY Text into the file, so that ODR\-PadEnc can read it.
+.TP
+\fB\-W\fR, \fB\-\-write\-icy\-text\-dl\-plus\fR
+When writing the ICY Text into the file, add DL Plus information.
+.TP
+\fB\-\-identifier\fR=\fI\,ID\/\fR
+An identifier string that is sent in the ODRv EDI TAG. Max 32 characters length.
+.TP
+\fB\-\-startup\-check\fR=\fI\,SCRIPT_PATH\/\fR
+Before starting, run the given script, and only start if it returns 0.
+.TP
+\fB\-p\fR, \fB\-\-pad\fR=\fI\,BYTES\/\fR
+Enable PAD insertion and set PAD size in bytes.
+.TP
+\fB\-P\fR, \fB\-\-pad\-socket\fR=\fI\,IDENTIFIER\/\fR
+Use the given identifier to communicate with ODR\-PadEnc.
+.TP
+\fB\-l\fR, \fB\-\-level\fR
+Show peak audio level indication.
+.TP
+\fB\-S\fR, \fB\-\-stats\fR=\fI\,SOCKET_NAME\/\fR
+Connect to the specified UNIX Datagram socket and send statistics.
+This allows external tools to collect audio and drift compensation stats.
+.TP
+\fB\-s\fR, \fB\-\-silence\fR=\fI\,TIMEOUT\/\fR
+Abort encoding after TIMEOUT seconds of silence.
+.SH AUTHOR
+Originally written by Robin Alexander <robin.alexander@netplus.ch>.
+.SH SEE ALSO
+odr-padenc(1), odr-dabmux(1)