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diff --git a/man/odr-audioenc.1 b/man/odr-audioenc.1 new file mode 100644 index 0000000..6b95f50 --- /dev/null +++ b/man/odr-audioenc.1 @@ -0,0 +1,169 @@ +.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) |