This distribution contains source for the following programs:

vat_record
----------

Records the audio sent on a vat conference channel.
The audio is stored in files that are by default placed in the current
working directory.

The following parameters can be changed with the following command line
options.

-i <ip address>		The IP address of the conference. (default 224.2.0.1)
-p <UDP port>		The UDP port number of the conference. (default 3456)
-c <conference id>	The conference id. (default 0)
-d <directory>		Directory to put audio files. (default ".")
-f <filename prefix>	Filename prefix of audio files. (default "audio")
-s <seconds>		Seconds of audio per file. (default 180)
-t <min to record>	Number of minutes to record (default unlimited)
-b <max bytes>		Maximum number of bytes to record (default unlimited)


vat_play
--------

Retransmits a recorded vat session.

The following parameters can be changed with the following command line
options.

-i <ip address>		The IP address of the playback. (default 224.2.0.1)
-p <UDP port>		The UDP port number of the playback. (default 7878)
-c <conference id>	The conference id. (default 0)
-t <ttl>		TTL level to be used during the playback. (default 16)
-d <directory>		Directory to read audio files from. (default ".")
-f <filename prefix>	Filename prefix of audio files. (default "audio")
-o <time offset>	Jump <offset> number of seconds into recording.
-k			Keep long periods of silence.


nv_record
---------

Records the video sent on a nv conference channel.
The video is stored in files that are by default placed in the current
working directory.

The following parameters can be changed with the following command line
options.

-i <ip address>		The IP address of the conference. (default 224.2.1.1)
-p <UDP port>		The UDP port number of the conference. (default 4444)
-d <directory>		Directory to put video files. (default ".")
-f <filename prefix>	Filename prefix of video files. (default "video")
-s <seconds>		Seconds of audio per file. (default 180)
-t <min to record>	Number of minutes to record (default unlimited)
-b <max bytes>		Maximum number of bytes to record (default unlimited)


nv_play
-------

Retransmits a recorded nv session.

The following parameters can be changed with the following command line
options.

-i <ip address>		The IP address of the playback. (default 224.2.1.1)
-p <UDP port>		The UDP port number of the playback. (default 4444)
-t <ttl>		TTL level to be used during the playback. (default 16)
-d <directory>		Directory to read video files from. (default ".")
-f <filename prefix>	Filename prefix of video files. (default "video")
-o <time offset>	Jump <offset> number of seconds into recording.
-k			Keep long periods of video silence.


av_play
-------

Retransmits a recorded vat and nv session in parallel.

The following parameters can be changed with the following command line
options.

-i <audio ip address>	The IP address of the playback. (default 224.2.0.1)
-p <audio UDP port>	The UDP port number of the playback. (default 7878)
-c <conference id>	The conference id. (default 0)
-t <ttl>		TTL level to be used during the playback. (default 16)
-d <audio directory>	Directory to read audio files from. (default ".")
-f <filename prefix>	Filename prefix of audio files. (default "audio")
-j <video ip address>	The IP address of the playback. (default 224.2.1.0)
-q <video UDP port>	The UDP port number of the playback. (default 4444)
-e <video directory>	Directory to read video files from. (default ".")
-g <filename prefix>	Filename prefix of video files. (default "video")
-o <time offset>	Jump <offset> number of seconds into recording.


nv_analyze
----------

Displays which internal session ID's have been used to label the video
streams in a recording. 

The following parameters can be changed with the following command line
options.

-d <directory>		Directory to read video files from. (default ".")
-f <filename prefix>	Filename prefix of video files. (default "video")
-o <time offset>	Jump <offset> number of seconds into recording.


nv_filter
---------

Filter a video recording, generating a new video recording that contains
only the video stream belonging to the specified internal session id.
The -i option may be specified more than once.

The following parameters can be changed with the following command line
options.

-i <session id>		The session id of the desired video stream. (default 0)
-d <in directory>	Directory to read video files from. (default ".")
-e <out directory>	Directory to write video files to. (default ".")
-f <in prefix>		Filename prefix of video files. (default "video")
-g <out prefix>		Output prefix of video files. (default "video.id")
-o <time offset>	Jump <offset> number of seconds into recording.


vat_play_audio
--------------
Transmit an audio file as vat data.

The following parameters can be changed with the following command line
options.

-i <ip address>		The IP address of the playback. (default 224.2.0.1)
-p <UDP port>		The UDP port number of the playback. (default 7878)
-c <conference id>	The conference id. (default 0)
-t <ttl>		TTL level to be used during the playback. (default 16)
-v			Enable silence supression.
-N <name>		Sets the session ID string.
-n <threshold>		Adjust a silence suppression parameter.  Doesn't
			work very well yet.

vat_idle
--------
Transmit a vat session ID message after being idle for a specified time.

The following parameters can be changed with the following command line
options.

-i <ip address>		The IP address of the playback. (default 224.2.0.1)
-p <UDP port>		The UDP port number of the playback. (default 7878)
-c <conference id>	The conference id. (default 0)
-t <ttl>		TTL level to be used during the playback. (default 16)
-N <name>		Sets the session ID string.
-m <minimum idle>	Sets minimum number of seconds one must have been
			idle before an idle message is transmitted.
-r <idle rate>		Sets the interval between subsequent idle messages.