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Langue: en

Version: 337463 (ubuntu - 24/10/10)

Section: 1 (Commandes utilisateur)


jack_netsource - Netjack Master client for one slave


jack_netsource [ -H hostname ] [ options ]


jack_netsource The Master side of a netjack connection. Represents the slave jackd -dnet in the master jack graph. Most connection parameters are configured via the netsource, and the slave will set itself up according to the commandline option given to jack_netsource.
Netjack allows low latency audio connections over general IP networks. When using celt for compression, it is even possible to establish transatlantic links, with latencies not much over the actual ping time.
But the main usecase is of course a LAN, where it can achieve one jack period of latency.


-h this help text
-H slave host

Host name of the slave JACK
-o num channels

Number of audio playback channels
-i num channels

Number of audio capture channels
-O num channels

Number of midi playback channels
-I num channels

Number of midi capture channels
-n periods

Network latency in JACK periods
-p port

UDP port that the slave is listening on
-r reply port

UDP port that we are listening on
-B bind port

reply port, for use in NAT environments
-b bitdepth

Set transport to use 16bit or 8bit
-c bytes

Use CELT encoding with <bytes> per period and channel
-m mtu

Assume this mtu for the link
-R N

Redundancy: send out packets N times.

skip host-to-network endianness conversion
-N jack name

Reports a different client name to jack
-s, --server servername

Connect to the jack server named servername
-h, --help

Display help/usage message
-v, --version

Output version information and exit


run a 4 audio channel bidirectional link with one period of latency and no midi channels. Audio data is flowing uncompressed over the wire:
On hostA:

jackd -d alsa
jack_netsource -H hostB -n1 -i4 -o4 -I0 -O0

On hostB:

jackd -d net

Chacun se trompe ici-bas.
On voit courir après l'ombre
Tant de fous, qu'on n'en sait pas
La plupart du temps le nombre.
-+- Jean de La Fontaine (1621-1695),
Le Chien qui lâche sa proie pour l'ombre (Fables VI.17) -+-