@admonition{ Host authority | @htmlonly
By providing the host authority (URI + port), you can easily open each configuration option in the config UI.
Host authority:
@endhtmlonly
}
Sunshine will work with the default settings for most users. In some cases you may want to configure Sunshine further.
The default location for the configuration file is listed below. You can use another location if you
choose, by passing in the full configuration file path as the first argument when you start Sunshine.
Example
sunshine ~/sunshine_config.conf
The default location of the apps.json is the same as the configuration file. You can use a custom
location by modifying the configuration file.
Default Config Directory
OS
Location
Docker
@code{}/config@endcode
Linux
@code{}~/.config/sunshine@endcode
macOS
@code{}~/.config/sunshine@endcode
Windows
@code{}%ProgramFiles%\Sunshine\config@endcode
Although it is recommended to use the configuration UI, it is possible manually configure Sunshine by
editing the conf file in a text editor. Use the examples as reference.
General
locale
Description
The locale used for Sunshine's user interface.
Default
@code{}
en
@endcode
Example
@code{}
locale = en
@endcode
Choices
de
German
en
English
en_GB
English (UK)
en_US
English (United States)
es
Spanish
fr
French
it
Italian
ja
Japanese
pt
Portuguese
ru
Russian
sv
Swedish
tr
Turkish
zh
Chinese (Simplified)
sunshine_name
Description
The name displayed by Moonlight.
Default
PC hostname
Example
@code{}
sunshine_name = Sunshine
@endcode
min_log_level
Description
The minimum log level printed to standard out.
Default
@code{}
info
@endcode
Example
@code{}
min_log_level = info
@endcode
Choices
verbose
All logging message.
@attention{This may negatively affect streaming performance.}
debug
Debug log messages and higher.
@attention{This may negatively affect streaming performance.}
info
Informational log messages and higher.
warning
Warning log messages and higher.
error
Error log messages and higher.
fatal
Only fatal log messages.
none
No log messages.
channels
Description
Sunshine can support multiple clients streaming simultaneously,
at the cost of higher CPU and GPU usage.
@note{All connected clients share control of the same streaming session.}
@warning{Some hardware encoders may have limitations that reduce performance with multiple streams.}
Default
@code{}
1
@endcode
Example
@code{}
channels = 1
@endcode
global_prep_cmd
Description
A list of commands to be run before/after all applications.
If any of the prep-commands fail, starting the application is aborted.
Whether to be notified of new pre-release versions of Sunshine.
Default
@code{}
disabled
@endcode
Example
@code{}
notify_pre_releases = disabled
@endcode
Input
controller
Description
Whether to allow controller input from the client.
Default
@code{}
enabled
@endcode
Example
@code{}
controller = enabled
@endcode
gamepad
Description
The type of gamepad to emulate on the host.
Default
@code{}
auto
@endcode
Example
@code{}
gamepad = auto
@endcode
Choices
ds4
DualShock 4 controller (PS4)
@note{This option applies to Windows only.}
ds5
DualShock 5 controller (PS5)
@note{This option applies to Linux only.}
switch
Switch Pro controller
@note{This option applies to Linux only.}
x360
Xbox 360 controller
@note{This option applies to Windows only.}
xone
Xbox One controller
@note{This option applies to Linux only.}
ds4_back_as_touchpad_click
Description
Allow Select/Back inputs to also trigger DS4 touchpad click. Useful for clients looking to
emulate touchpad click on Xinput devices.
@hint{Only applies when gamepad is set to ds4 manually. Unused in other gamepad modes.}
If a client reports that a connected gamepad has motion sensor support, emulate it on the
host as a DS4 controller.
When disabled, motion sensors will not be taken into account during gamepad type selection.
@hint{Only applies when gamepad is set to auto.}
Default
@code{}
enabled
@endcode
Example
@code{}
motion_as_ds4 = enabled
@endcode
touchpad_as_ds4
Description
If a client reports that a connected gamepad has a touchpad, emulate it on the host
as a DS4 controller.
When disabled, touchpad presence will not be taken into account during gamepad type selection.
@hint{Only applies when gamepad is set to auto.}
Default
@code{}
enabled
@endcode
Example
@code{}
touchpad_as_ds4 = enabled
@endcode
back_button_timeout
Description
If the Back/Select button is held down for the specified number of milliseconds,
a Home/Guide button press is emulated.
@tip{If back_button_timeout < 0, then the Home/Guide button will not be emulated.}
Default
@code{}
-1
@endcode
Example
@code{}
back_button_timeout = 2000
@endcode
keyboard
Description
Whether to allow keyboard input from the client.
Default
@code{}
enabled
@endcode
Example
@code{}
keyboard = enabled
@endcode
key_repeat_delay
Description
The initial delay, in milliseconds, before repeating keys. Controls how fast keys will
repeat themselves.
Default
@code{}
500
@endcode
Example
@code{}
key_repeat_delay = 500
@endcode
key_repeat_frequency
Description
How often keys repeat every second.
@tip{This configurable option supports decimals.}
Default
@code{}
24.9
@endcode
Example
@code{}
key_repeat_frequency = 24.9
@endcode
always_send_scancodes
Description
Sending scancodes enhances compatibility with games and apps but may result in incorrect keyboard input
from certain clients that aren't using a US English keyboard layout.
Enable if keyboard input is not working at all in certain applications.
Disable if keys on the client are generating the wrong input on the host.
@caution{Applies to Windows only.}
Default
@code{}
enabled
@endcode
Example
@code{}
always_send_scancodes = enabled
@endcode
key_rightalt_to_key_win
Description
It may be possible that you cannot send the Windows Key from Moonlight directly. In those cases it may be useful to
make Sunshine think the Right Alt key is the Windows key.
When enabled, Sunshine will pass through high resolution scroll events from Moonlight clients.
This can be useful to disable for older applications that scroll too fast with high resolution scroll
events.
When enabled, Sunshine will pass through native pen/touch events from Moonlight clients.
This can be useful to disable for older applications without native pen/touch support.
Default
@code{}
enabled
@endcode
Example
@code{}
native_pen_touch = enabled
@endcode
keybindings
Description
Sometimes it may be useful to map keybindings. Wayland won't allow clients to capture the Win Key
for example.
@tip{See [virtual key codes](https://docs.microsoft.com/en-us/windows/win32/inputdev/virtual-key-codes)}
@hint{keybindings needs to have a multiple of two elements.}
@note{This option is not available in the UI. A PR would be welcome.}
**Linux + pipewire:**
@code{}
pactl info | grep Source
# in some causes you'd need to use the `Sink` device, if `Source` doesn't work, so try:
pactl info | grep Sink
@endcode
**Windows:**
Enter the following command in command prompt or PowerShell.
@code{}
%ProgramFiles%\Sunshine\tools\audio-info.exe
@endcode
If you have multiple audio devices with identical names, use the Device ID instead.
}
@attention{If you want to mute the host speakers, use
[virtual_sink](#virtual_sink) instead.}
The audio device that's virtual, like Steam Streaming Speakers. This allows Sunshine to stream audio,
while muting the speakers.
@tip{See [audio_sink](#audio_sink)!}
@tip{These are some options for virtual sound devices.
* Stream Streaming Speakers (Linux, macOS, Windows)
* Steam must be installed.
* Enable [install_steam_audio_drivers](#install_steam_audio_drivers)
or use Steam Remote Play at least once to install the drivers.
* [Virtual Audio Cable](https://vb-audio.com/Cable) (macOS, Windows)
}
Installs the Steam Streaming Speakers driver (if Steam is installed) to support surround sound and muting
host audio.
@note{This option is only supported on Windows.}
Select the video card you want to stream.
@tip{To find the appropriate values follow these instructions.
**Linux + VA-API:**
Unlike with *amdvce* and *nvenc*, it doesn't matter if video encoding is done on a different GPU.
@code{}
ls /dev/dri/renderD* # to find all devices capable of VAAPI
# replace ``renderD129`` with the device from above to list the name and capabilities of the device
vainfo --display drm --device /dev/dri/renderD129 | \
grep -E "((VAProfileH264High|VAProfileHEVCMain|VAProfileHEVCMain10).*VAEntrypointEncSlice)|Driver version"
@endcode
To be supported by Sunshine, it needs to have at the very minimum:
`VAProfileH264High : VAEntrypointEncSlice`
**Windows:**
Enter the following command in command prompt or PowerShell.
@code{}
%ProgramFiles%\Sunshine\tools\dxgi-info.exe
@endcode
For hybrid graphics systems, DXGI reports the outputs are connected to whichever graphics
adapter that the application is configured to use, so it's not a reliable indicator of how the
display is physically connected.
}
@code{}
adapter_name = Radeon RX 580 Series
@endcode
output_name
Description
Select the display number you want to stream.
@tip{To find the appropriate values follow these instructions.
**Linux:**
During Sunshine startup, you should see the list of detected displays:
@code{}
Info: Detecting displays
Info: Detected display: DVI-D-0 (id: 0) connected: false
Info: Detected display: HDMI-0 (id: 1) connected: true
Info: Detected display: DP-0 (id: 2) connected: true
Info: Detected display: DP-1 (id: 3) connected: false
Info: Detected display: DVI-D-1 (id: 4) connected: false
@endcode
You need to use the id value inside the parenthesis, e.g. `1`.
**macOS:**
During Sunshine startup, you should see the list of detected displays:
@code{}
Info: Detecting displays
Info: Detected display: Monitor-0 (id: 3) connected: true
Info: Detected display: Monitor-1 (id: 2) connected: true
@endcode
You need to use the id value inside the parenthesis, e.g. `3`.
**Windows:**
Enter the following command in command prompt or PowerShell.
@code{}
%ProgramFiles%\Sunshine\tools\dxgi-info.exe
@endcode
}
Default
Sunshine will select the default display.
Example (Linux)
@code{}
output_name = 0
@endcode
Example (macOS)
@code{}
output_name = 3
@endcode
Example (Windows)
@code{}
output_name = \\.\DISPLAY1
@endcode
min_fps_factor
Description
Sunshine will use this factor to calculate the minimum time between frames. Increasing this value may help
when streaming mostly static content.
@warning{Higher values will consume more bandwidth.}
Default
@code{}
1
@endcode
Range
1-3
Example
@code{}
min_fps_factor = 1
@endcode
Network
upnp
Description
Sunshine will attempt to open ports for streaming over the internet.
Default
@code{}
disabled
@endcode
Example
@code{}
upnp = enabled
@endcode
address_family
Description
Set the address family that Sunshine will use.
Default
@code{}
ipv4
@endcode
Example
@code{}
address_family = both
@endcode
Choices
ipv4
IPv4 only
both
IPv4+IPv6
port
Description
Set the family of ports used by Sunshine.
Changing this value will offset other ports as shown in config UI.
Default
@code{}
47989
@endcode
Range
1029-65514
Example
@code{}
port = 47989
@endcode
origin_web_ui_allowed
Description
The origin of the remote endpoint address that is not denied for HTTPS Web UI.
Default
@code{}
lan
@endcode
Example
@code{}
origin_web_ui_allowed = lan
@endcode
Choices
pc
Only localhost may access the web ui
lan
Only LAN devices may access the web ui
wan
Anyone may access the web ui
external_ip
Description
If no external IP address is given, Sunshine will attempt to automatically detect external ip-address.
Default
Automatic
Example
@code{}
external_ip = 123.456.789.12
@endcode
lan_encryption_mode
Description
This determines when encryption will be used when streaming over your local network.
@warning{Encryption can reduce streaming performance, particularly on less powerful hosts and clients.}
Default
@code{}
0
@endcode
Example
@code{}
lan_encryption_mode = 0
@endcode
Choices
0
encryption will not be used
1
encryption will be used if the client supports it
2
encryption is mandatory and unencrypted connections are rejected
wan_encryption_mode
Description
This determines when encryption will be used when streaming over the Internet.
@warning{Encryption can reduce streaming performance, particularly on less powerful hosts and clients.}
Default
@code{}
1
@endcode
Example
@code{}
wan_encryption_mode = 1
@endcode
Choices
0
encryption will not be used
1
encryption will be used if the client supports it
2
encryption is mandatory and unencrypted connections are rejected
ping_timeout
Description
How long to wait, in milliseconds, for data from Moonlight before shutting down the stream.
Default
@code{}
10000
@endcode
Example
@code{}
ping_timeout = 10000
@endcode
Config Files
file_apps
Description
The application configuration file path. The file contains a JSON formatted list of applications that
can be started by Moonlight.
Default
@code{}
apps.json
@endcode
Example
@code{}
file_apps = apps.json
@endcode
credentials_file
Description
The file where user credentials for the UI are stored.
The private key used for the web UI and Moonlight client pairing. For best compatibility,
this should be an RSA-2048 private key.
@warning{Not all Moonlight clients support ECDSA keys or RSA key lengths other than 2048 bits.}
Default
@code{}
credentials/cakey.pem
@endcode
Example
@code{}
pkey = /dir/pkey.pem
@endcode
cert
Description
The certificate used for the web UI and Moonlight client pairing. For best compatibility,
this should have an RSA-2048 public key.
@warning{Not all Moonlight clients support ECDSA keys or RSA key lengths other than 2048 bits.}
Default
@code{}
credentials/cacert.pem
@endcode
Example
@code{}
cert = /dir/cert.pem
@endcode
file_state
Description
The file where current state of Sunshine is stored.
Default
@code{}
sunshine_state.json
@endcode
Example
@code{}
file_state = sunshine_state.json
@endcode
Advanced
fec_percentage
Description
Percentage of error correcting packets per data packet in each video frame.
@warning{Higher values can correct for more network packet loss,
but at the cost of increasing bandwidth usage.}
Default
@code{}
20
@endcode
Range
1-255
Example
@code{}
fec_percentage = 20
@endcode
qp
Description
Quantization Parameter. Some devices don't support Constant Bit Rate. For those devices, QP is used instead.
@warning{Higher value means more compression, but less quality.}
Default
@code{}
28
@endcode
Example
@code{}
qp = 28
@endcode
min_threads
Description
Minimum number of CPU threads used for encoding.
@note{Increasing the value slightly reduces encoding efficiency, but the tradeoff is usually worth it to
gain the use of more CPU cores for encoding. The ideal value is the lowest value that can reliably encode
at your desired streaming settings on your hardware.}
Default
@code{}
2
@endcode
Example
@code{}
min_threads = 2
@endcode
hevc_mode
Description
Allows the client to request HEVC Main or HEVC Main10 video streams.
@warning{HEVC is more CPU-intensive to encode, so enabling this may reduce performance when using software
encoding.}
Default
@code{}
0
@endcode
Example
@code{}
hevc_mode = 2
@endcode
Choices
0
advertise support for HEVC based on encoder capabilities (recommended)
1
do not advertise support for HEVC
2
advertise support for HEVC Main profile
3
advertise support for HEVC Main and Main10 (HDR) profiles
av1_mode
Description
Allows the client to request AV1 Main 8-bit or 10-bit video streams.
@warning{AV1 is more CPU-intensive to encode, so enabling this may reduce performance when using software
encoding.}
Default
@code{}
0
@endcode
Example
@code{}
av1_mode = 2
@endcode
Choices
0
advertise support for AV1 based on encoder capabilities (recommended)
1
do not advertise support for AV1
2
advertise support for AV1 Main 8-bit profile
3
advertise support for AV1 Main 8-bit and 10-bit (HDR) profiles
capture
Description
Force specific screen capture method.
Default
Automatic.
Sunshine will use the first capture method available in the order of the table above.
Example
@code{}
capture = kms
@endcode
Choices
nvfbc
Use NVIDIA Frame Buffer Capture to capture direct to GPU memory. This is usually the fastest method for
NVIDIA cards. NvFBC does not have native Wayland support and does not work with XWayland.
@note{Applies to Linux only.}
wlr
Capture for wlroots based Wayland compositors via DMA-BUF.
@note{Applies to Linux only.}
kms
DRM/KMS screen capture from the kernel. This requires that Sunshine has `cap_sys_admin` capability.
@note{Applies to Linux only.}
x11
Uses XCB. This is the slowest and most CPU intensive so should be avoided if possible.
@note{Applies to Linux only.}
ddx
Use DirectX Desktop Duplication API to capture the display. This is well-supported on Windows machines.
@note{Applies to Windows only.}
wgc
(beta feature) Use Windows.Graphics.Capture to capture the display.
@note{Applies to Windows only.}
@attention{This capture method is not compatible with the Sunshine service.}
encoder
Description
Force a specific encoder.
Default
Sunshine will use the first encoder that is available.
Example
@code{}
encoder = nvenc
@endcode
Choices
nvenc
For NVIDIA graphics cards
quicksync
For Intel graphics cards
amdvce
For AMD graphics cards
vaapi
Use Linux VA-API (AMD, Intel)
software
Encoding occurs on the CPU
NVIDIA NVENC Encoder
nvenc_preset
Description
NVENC encoder performance preset.
Higher numbers improve compression (quality at given bitrate) at the cost of increased encoding latency.
Recommended to change only when limited by network or decoder, otherwise similar effect can be accomplished
by increasing bitrate.
@note{This option only applies when using NVENC [encoder](#encoder).}
Default
@code{}
1
@endcode
Example
@code{}
nvenc_preset = 1
@endcode
Choices
1
P1 (fastest)
2
P2
3
P3
4
P4
5
P5
6
P6
7
P7 (slowest)
nvenc_twopass
Description
Enable two-pass mode in NVENC encoder.
This allows to detect more motion vectors, better distribute bitrate across the frame and more strictly
adhere to bitrate limits. Disabling it is not recommended since this can lead to occasional bitrate
overshoot and subsequent packet loss.
@note{This option only applies when using NVENC [encoder](#encoder).}
Default
@code{}
quarter_res
@endcode
Example
@code{}
nvenc_twopass = quarter_res
@endcode
Choices
disabled
One pass (fastest)
quarter_res
Two passes, first pass at quarter resolution (faster)
full_res
Two passes, first pass at full resolution (slower)
nvenc_spatial_aq
Description
Assign higher QP values to flat regions of the video.
Recommended to enable when streaming at lower bitrates.
@note{This option only applies when using NVENC [encoder](#encoder).}
@warning{Enabling this option may reduce performance.}
Default
@code{}
disabled
@endcode
Example
@code{}
nvenc_spatial_aq = disabled
@endcode
nvenc_vbv_increase
Description
Single-frame VBV/HRD percentage increase.
By default Sunshine uses single-frame VBV/HRD, which means any encoded video frame size is not expected to
exceed requested bitrate divided by requested frame rate. Relaxing this restriction can be beneficial and
act as low-latency variable bitrate, but may also lead to packet loss if the network doesn't have buffer
headroom to handle bitrate spikes. Maximum accepted value is 400, which corresponds to 5x increased
encoded video frame upper size limit.
@note{This option only applies when using NVENC [encoder](#encoder).}
@warning{Can lead to network packet loss.}
Default
@code{}
0
@endcode
Range
0-400
Example
@code{}
nvenc_vbv_increase = 0
@endcode
nvenc_realtime_hags
Description
Use realtime gpu scheduling priority in NVENC when hardware accelerated gpu scheduling (HAGS) is enabled
in Windows. Currently, NVIDIA drivers may freeze in encoder when HAGS is enabled, realtime priority is used
and VRAM utilization is close to maximum. Disabling this option lowers the priority to high, sidestepping
the freeze at the cost of reduced capture performance when the GPU is heavily loaded.
@note{This option only applies when using NVENC [encoder](#encoder).}
@note{Applies to Windows only.}
Default
@code{}
enabled
@endcode
Example
@code{}
nvenc_realtime_hags = enabled
@endcode
nvenc_latency_over_power
Description
Adaptive P-State algorithm which NVIDIA drivers employ doesn't work well with low latency streaming,
so Sunshine requests high power mode explicitly.
@note{This option only applies when using NVENC [encoder](#encoder).}
@warning{Disabling this is not recommended since this can lead to significantly increased encoding latency.}
@note{Applies to Windows only.}
Sunshine can't capture fullscreen OpenGL and Vulkan programs at full frame rate unless they present on
top of DXGI. With this option enabled Sunshine changes global Vulkan/OpenGL present method to
"Prefer layered on DXGI Swapchain". This is system-wide setting that is reverted on Sunshine program exit.
@note{This option only applies when using NVENC [encoder](#encoder).}
@note{Applies to Windows only.}
Prefer CAVLC entropy coding over CABAC in H.264 when using NVENC.
CAVLC is outdated and needs around 10% more bitrate for same quality, but provides slightly faster
decoding when using software decoder.
@note{This option only applies when using H.264 format with the
NVENC [encoder](#encoder).}
Default
@code{}
disabled
@endcode
Example
@code{}
nvenc_h264_cavlc = disabled
@endcode
Intel QuickSync Encoder
qsv_preset
Description
The encoder preset to use.
@note{This option only applies when using quicksync [encoder](#encoder).}
Default
@code{}
medium
@endcode
Example
@code{}
qsv_preset = medium
@endcode
Choices
veryfast
fastest (lowest quality)
faster
faster (lower quality)
fast
fast (low quality)
medium
medium (default)
slow
slow (good quality)
slower
slower (better quality)
veryslow
slowest (best quality)
qsv_coder
Description
The entropy encoding to use.
@note{This option only applies when using H.264 with the quicksync
[encoder](#encoder).}
This options enables use of HEVC on older Intel GPUs that only support low power encoding for H.264.
@note{This option only applies when using quicksync [encoder](#encoder).}
@caution{Streaming performance may be significantly reduced when this option is enabled.}
Default
@code{}
disabled
@endcode
Example
@code{}
qsv_slow_hevc = disabled
@endcode
AMD AMF Encoder
amd_usage
Description
The encoder usage profile is used to set the base set of encoding parameters.
@note{This option only applies when using amdvce [encoder](#encoder).}
@note{The other AMF options that follow will override a subset of the settings applied by your usage
profile, but there are hidden parameters set in usage profiles that cannot be overridden elsewhere.}
Default
@code{}
ultralowlatency
@endcode
Example
@code{}
amd_usage = ultralowlatency
@endcode
Choices
transcoding
transcoding (slowest)
webcam
webcam (slow)
lowlatency_high_quality
low latency, high quality (fast)
lowlatency
low latency (faster)
ultralowlatency
ultra low latency (fastest)
amd_rc
Description
The encoder rate control.
@note{This option only applies when using amdvce [encoder](#encoder).}
@warning{The `vbr_latency` option generally works best, but some bitrate overshoots may still occur.
Enabling HRD allows all bitrate based rate controls to better constrain peak bitrate, but may result in
encoding artifacts depending on your card.}
Default
@code{}
vbr_latency
@endcode
Example
@code{}
amd_rc = vbr_latency
@endcode
Choices
cqp
constant qp mode
cbr
constant bitrate
vbr_latency
variable bitrate, latency constrained
vbr_peak
variable bitrate, peak constrained
amd_enforce_hrd
Description
Enable Hypothetical Reference Decoder (HRD) enforcement to help constrain the target bitrate.
@note{This option only applies when using amdvce [encoder](#encoder).}
@warning{HRD is known to cause encoding artifacts or negatively affect encoding quality on certain cards.}
Default
@code{}
disabled
@endcode
Example
@code{}
amd_enforce_hrd = disabled
@endcode
amd_quality
Description
The quality profile controls the tradeoff between speed and quality of encoding.
@note{This option only applies when using amdvce [encoder](#encoder).}
Default
@code{}
balanced
@endcode
Example
@code{}
amd_quality = balanced
@endcode
Choices
speed
prefer speed
balanced
balanced
quality
prefer quality
amd_preanalysis
Description
Preanalysis can increase encoding quality at the cost of latency.
@note{This option only applies when using amdvce [encoder](#encoder).}
Default
@code{}
disabled
@endcode
Example
@code{}
amd_preanalysis = disabled
@endcode
amd_vbaq
Description
Variance Based Adaptive Quantization (VBAQ) can increase subjective visual quality by prioritizing
allocation of more bits to smooth areas compared to more textured areas.
@note{This option only applies when using amdvce [encoder](#encoder).}
Default
@code{}
enabled
@endcode
Example
@code{}
amd_vbaq = enabled
@endcode
amd_coder
Description
The entropy encoding to use.
@note{This option only applies when using H.264 with the amdvce
[encoder](#encoder).}
Force Video Toolbox to use software encoding.
@note{This option only applies when using macOS.}
Default
@code{}
auto
@endcode
Example
@code{}
vt_software = auto
@endcode
Choices
auto
let ffmpeg decide
disabled
disable software encoding
allowed
allow software encoding
forced
force software encoding
vt_realtime
Description
Realtime encoding.
@note{This option only applies when using macOS.}
@warning{Disabling realtime encoding might result in a delayed frame encoding or frame drop.}
A preset is a collection of options that will provide a certain encoding speed to compression ratio. A slower
preset will provide better compression (compression is quality per filesize). This means that, for example, if
you target a certain file size or constant bit rate, you will achieve better quality with a slower preset.
Similarly, for constant quality encoding, you will simply save bitrate by choosing a slower preset.
Use the slowest preset that you have patience for.}
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