jacktrip - Man Page

manual page for JackTrip VERSION: 2.0.0


jacktrip [-s|-c|-S|-C hostIPAddressOrURL] [options]


JackTrip: A System for High-Quality Audio Network Performance over the Internet Copyright © 2008-2022 Juan-Pablo Caceres, Chris Chafe. SoundWIRE group at CCRMA, Stanford University This build of JackTrip is subject to LGPL license. JackTrip source code is released under MIT and GPL licenses. See LICENSE.md file for more information. VERSION: 2.0.0



-s,  --server

Run in P2P Server Mode

-c,  --client <peer_hostname_or_IP_num>

Run in P2P Client Mode

-S,  --jacktripserver

Run in Hub Server Mode

-C,  --pingtoserver <peer_name_or_IP>

Run in Hub Client Mode

Optional Arguments

-n,  --numchannels #

Number of Input and Output Channels (# greater than 0, default: 2)

--receivechannels #

Number of receive Channels from the network (# greater than 0)

--sendchannels #

Number of send Channels to the network (# greater than 0)

-q,  --queue # (2 or more)

Queue Buffer Length, in Packet Size (default: 4)

-r,  --redundancy # (1 or more)

Packet Redundancy to avoid glitches with packet losses (default: 1)

-o,  --portoffset #

Receiving bind port and peer port offset from default 4464

-B,  --bindport #

Set only the bind port number (default: 4464)

-P,  --peerport #

Set only the peer port number (default: 4464)

-U,  --udpbaseport

Set only the server udp base port number (default: 61002)

-b,  --bitres # (8, 16, 24, 32)

Audio Bit Rate Resolutions (default: 16, 32 uses floating-point)

-z,  --zerounderrun

Set buffer to zeros when underrun occurs (default: wavetable)

-t,  --timeout

Quit after 10 seconds of no network activity

-l,  --loopback

Run in Loop-Back Mode

-j,  --jamlink

Run in JamLink Mode (Connect to a JamLink Box)

-J,  --clientname

Change default client name (default: JackTrip)

-K,  --remotename

Change default remote client name when connecting to a hub server (the default is derived from this computer's external facing IP address)


Append thread ID to client names

-L,  --localaddress

Change default local host IP address (default:

-D,  --nojackportsconnect

Don't connect default audio ports in jack

--bufstrategy # (0, 1, 2, 3, 4)

Use alternative jitter buffer

--broadcast <broadcast_queue>

Duplicate receive ports with the specified broadcast_queue length. Broadcast outputs have higher latency but less packet loss.


Use RT thread priority for network I/O

Options for Audio Patching in Hub Server Mode

-p,  --hubpatch # (0, 1, 2, 3, 4, 5)

Hub auto audio patch, only has effect if running HUB SERVER mode, 0=server-to-clients, 1=client loopback, 2=client fan out/in but not loopback, 3=reserved for TUB, 4=full mix, 5=no auto patching (default: 0)

-i,  --includeserver

Include audio to and from the server in the mix when patching. Only affects -p 2 (client fan out/in but not loopback) and -p 4 (full mix) patch modes.

-u,  --upmix

Upmix mono clients to stereo when patching

Optional Signal Processing

-f,  --effects # | paramString | help

Turn on incoming and/or outgoing compressor and/or reverb in Client - see `-f help' for details

-O,  --overflowlimiting i|o[w]|io[w]|n|help

Use audio limiter(s) in Client, i=incoming from network, o=outgoing to network, io=both, n=no limiters, w=warn if limiting (default=n). Say -O help for more.

-a,  --assumednumclients help|# (1,2,..)

Assumed number of Clients (sources) mixing at Hub Server (otherwise 2 assumed by -O)

-T,  --srate #

Set the sampling rate, works only on some audio backends (default: 48000)

-F,  --bufsize #

Set the buffer size, works only on some audio backends (default: 128)

Arguments to Use Jacktrip Without Jack

-R,  --rtaudio

Use system's default sound system instead of Jack

--audiodevice "input-output device name"

--audiodevice "input device name","output device name"

--audioinputdevice "input device name"

--audiooutputdevice "output device name"

Set audio device to use; if not set, the default device will be used


List available audio devices

-d,  --deviceid #

Set rtaudio device id (DEPRECATED, use --audiodevice instead)

Arguments to Display IO Statistics

-I,  --iostat <time_in_secs>

Turn on IO stat reporting with specified interval (in seconds)

-G,  --iostatlog <log_file>

Save stat log into a file (default: print in stdout)

-x,  --examine-audio-delay <print_interval_in_secs> | help

Print round-trip audio delay statistics. See `-x help' for details.

Arguments to Simulate Network Issues

--simloss <rate>

Simulate packet loss

--simjitter <rate>,<d>

Simulate jitter, d is max delay in packets

Arguments for Hub Client/Server Authentication

-A,  --auth

Use authentication on the client side, or require it on the server side


The certificate file to use on the hub server


The private key file to use on the hub server


The file containing the stored usernames and passwords


The username to use when connecting as a hub client (if not supplied here, this is read from standard input)


The password to use when connecting as a hub client (if not supplied here, this is read from standard input)

Arguments for the GUI


Force JackTrip to run with the GUI. If not using VirtualStudio mode, command line switches in the required arguments, optional arguments (except -l, -j, -L, --appendthreadid), audio patching, and authentication sections will be honoured, and default settings will be used where arguments aren't supplied. Options from other sections will be ignored (and the last used settings will be loaded), except for -V, and the --version and --help switches which will override this.

Help Arguments

-v,  --version

Prints Version Number

-V,  --verbose

Verbose mode, prints debug messages

-h,  --help

Prints this Help


August 2023 JackTrip VERSION: 2.0.0