Dependencies.md

Dependencies

Most of these dependencies should be installed automatically when you install official packages.
Unless otherwise stated, the dependencies are all optional.

Core Dependencies

Those are required by almost every component.

Project	Source Download Link	Purpose	Client or Server	Notes
glib	https://ftp.gnome.org/pub/gnome/sources/glib/	low-level library	both	Required
gtk	http://ftp.gnome.org/pub/gnome/sources/gtk+/	UI Toolkit	both	Required
pyopengl	https://pypi.python.org/pypi/PyOpenGL and https://pypi.python.org/pypi/PyOpenGL-accelerate	client OpenGL accelerated rendering	client
pycups	https://pypi.org/project/pycups/	Printing	both

Network Layer

See Network

Project	Source Download Link	Purpose	Client or Server	Notes
rencode	https://pypi.python.org/pypi/rencode/	packet encoding	both	(deprecated in 4.4)
pyyaml	https://pypi.python.org/pypi/PyYAML/	alternative packet encoder	both	optional (usually unused)
lz4	https://github.com/lz4/lz4/releases	packet compression	both	Strongly recommended
aioquic	https://pypi.org/project/aioquic/	low level network protocol	both	quic
python-cryptography	https://pypi.python.org/pypi/cryptography	Encryption	both
python-zeroconf	https://pypi.org/project/zeroconf/	Multicast DNS session publishing	server
python-netifaces	https://pypi.python.org/pypi/netifaces	Multicast DNS session publishing	server
dbus-python	https://dbus.freedesktop.org/releases/dbus-python/	desktop integration, server control interface	both	not applicable to MS Windows or Mac OSX
openssl	https://www.openssl.org/source/	SSL	both
paramiko	https://pypi.org/project/paramiko/	ssh integration	both
sshpass	https://sourceforge.net/projects/sshpass/files/sshpass/	non-interactive SSH password authentication	usually client
brotli	https://github.com/google/brotli/releases	HTML client compression	r15540

Authentication

See authentication modules

Project	Source Download Link	Purpose	Client or Server	Notes
python-gssapi	https://pypi.org/project/gssapi/	GSSAPI	server	#1691
python-kerberos	https://pypi.org/project/kerberos/	Kerberos	server	#1691
python-ldap	https://pypi.org/project/python-ldap/	LDAP	server	#1691
python-ldap3	https://pypi.org/project/ldap3/	LDAP v3	server	#1691
pyu2f	https://pypi.org/project/pyu2f/	U2F	server	#1789

Python modules

Project	Source Download Link	Notes
python-ipaddress	https://pypi.org/project/ipaddress/	unspecified: r11859
python-idna	https://pypi.org/project/idna/	unspecified: r11860
python-decorator	https://pypi.org/project/decorator/	required by gssapi: r18781
pyasn1	https://pypi.org/project/pyasn1/	unspecified: r5829
asn1crypto	https://pypi.org/project/asn1crypto/	required by python-cryptography: r17856
python-packaging	https://pypi.org/project/packaging/	required by python-cryptography: r15310
pyparsing	https://pypi.org/project/pyparsing/	required by python-cryptography: r15310
cffi	https://pypi.org/project/cffi/	required by python-cryptography: r11633
six	https://pypi.org/project/six/	required by python-cryptography: r11640
setuptools	https://pypi.org/project/setuptools/	unspecified: r5829
pycparser	https://pypi.org/project/pycparser/	required by cffi: r11634
pynacl	https://pypi.org/project/PyNaCl/	crypto library used by paramiko: r19967
bcrypt	https://pypi.org/project/bcrypt/	crypto library used by paramiko: r19965

Encodings

See picture encodings

Project	Source Download Link	Purpose	Client or Server
x264	ftp://ftp.videolan.org/pub/x264/snapshots/	h264 encoding	server
ffmpeg	http://ffmpeg.org/releases/	h264, h265, vp8 and vp9 decoding	client
vpx	http://downloads.webmproject.org/releases/webm/index.html	vp8 and vp9 codecs	both
webp	http://downloads.webmproject.org/releases/webp/index.html	webp codec	both
libpng	ftp://ftp.simplesystems.org/pub/libpng/png/src/libpng16/	png encoding	both
libspng	https://libspng.org/download/	faster png encoding	both
libjpeg-turbo	https://sourceforge.net/projects/libjpeg-turbo/files/	jpeg encoding	both
python-pillow	https://pypi.python.org/pypi/Pillow	png,jpeg,webp encoding and decoding, format conversion - Required	both
opencv	https://opencv.org/releases/	Webcam capture]	client
libyuv	https://chromium.googlesource.com/libyuv/libyuv/	Colourspace Conversion	both
pycuda	https://pypi.python.org/pypi/pycuda	NVENC	server
cuda	https://developer.nvidia.com/cuda-toolkit	NVENC	server
pyNVML	https://pypi.python.org/pypi/nvidia-ml-py/	NVENC	server

Audio

See audio forwarding

Project	Source Download Link	Purpose
gstreamer	http://gstreamer.freedesktop.org/src/	audio framework
Ogg	http://downloads.xiph.org/releases/ogg/	ogg container format
opus	http://downloads.xiph.org/releases/opus/	opus codec
Flac	http://downloads.xiph.org/releases/flac/	flac codec
Speex	http://downloads.xiph.org/releases/speex/	speex codec
Vorbis	http://downloads.xiph.org/releases/vorbis/	vorbis codec
wavpack	http://www.wavpack.com/downloads.html	wavpack codec
faac	https://github.com/knik0/faac/releases	aac encoder
faad	https://github.com/knik0/faad2/releases	aac decoder
lame	http://sourceforge.net/projects/lame/files/lame/	MP3 encoder
TwoLame	http://sourceforge.net/projects/twolame/files/twolame/	MP3 encoder

Dependency Graphs

These graphs were generated using jhbuild dot on MacOS.
The MacOS builds include very low level build dependencies.

Codecs

Python3 Modules

GTK3

Tools

MacOS Packaging Tools