Network audio games remote ssh video

Source (link to git-repo or to original if based on someone elses unmodified work):

Available as/for: 32bit - x8664bit - x86arm64 - 64bitarmhf - 32bitDesktopgitSource-Code

------------------------------------------------------------------------------ is a shell script that allow you control a remote desktop
with minimum latency with support for video and audio streaming.

Since the input control happens at low level by using netevent,
every input device can actually be forwarded to the remote host.
This means keyboards,mouses,joypads,racing wheels and so on, thus
allowing you to actually remotely play.

apart from the ssh server, ssh-rdp does not require a specific server
running on the remote side, but a set of tools needs to be present
remotely and others locally:

Software requirements:
* Local and Remote: bash,ffmpeg,openssh,netevent
* Local: inotifywait, wmctrl, mpv, taskset
* Remote: xdpyinfo,pulseaudio

Special requirements for input forwarding:
* Local user need to access files under /dev/input,
so make sure it is in the input group.
* Remote user need access to special device /dev/uinput
You can do that by install the provided 70-uinput.rules
into /etc/udev/rules.d on the remote side and reboot it.

To make it work, first start it with the "inputconfig" option
and pay attention to what it asks you.
Next, start it with -h parameter alone to see all the options.

There are other tunables you can find in the script.

* Due to network problems, sometimes the audio could be desyncronized,
it will recover by itself by speeding up, and could hear high-pitched sound.
* Just clicking in the remote window does not pass the control to it,
because that is the player, so hitting the choosed hotkey is mandatory.

* For remote gaming, turning on cpu encoder may give better
results than gpu encoder, if the gpu is already at its limit.

Use inputconfig to create or change the input config file

-s, --server Remote host to connect to
-u, --user ssh username
-p, --port ssh port
-d, --display Remote display (eg: 0.0)
-r, --resolution Grab size (eg: 1920x1080) or AUTO
-o, --offset Grab offset (eg: +1920,0)
--prescale Scale video before encoding (eg: 1280x720).
Has impact on remote cpu use and can increase latency too.
-f, --fps Grabbed frames per second
--pasource Capture from the specified pulseaudio source. (experimental and may introduce delay)
Use AUTO to guess, use ALL to capture everything.
Eg: alsa_output.pci-0000_00_1b.0.analog-stereo.monitor

--videoenc Video encoder can be: cpu,amdgpu,intelgpu,nvgpu,zerocopy,custom or show
"zerocopy" is experimental and causes ffmpeg to use kmsgrab
to grab the framebuffer and pass frames to vaapi encoder.
You've to run 'setcap cap_sys_admin+ep /bin/ffmpeg' on the server to use zerocopy.
--display is ignored when using zerocopy.
specify "show" to print the options for each preset.

--customv Specify a string for video encoder stuff when videoenc is set to custom
Eg: "-threads 1 -c:v h264_nvenc -preset llhq -delay 0 -zerolatency 1"
--audioenc Audio encoder can be: opus,pcm,null,custom or show
"null" disables audio grabbing completely
specify "show" to print the options for each other preset.

--customa Specify a string for audio encoder stuff when videoenc is set to custom
Eg: "-acodec libopus -vbr off -application lowdelay"
-v, --vbitrate Video bitrate in kbps or AUTO
AUTO will use 80% of the maximum available throughput.
-a, --abitrate Audio bitrate in kbps
--vplayeropts Additional options to pass to videoplayer
Eg: "--video-output-levels=limited --video-rotate=90"
--rexec-before Execute the specified script via 'sh' just before the connection
--rexec-exit Execute the specified script via 'sh' before exiting the script

Peter connecting to jserver, all defaults accepted --user venkman --server jserver

Raymond connecting to jserver on ssh port 322, streaming the display 0.0
remote setup is dual head and Raymond selects the right monitor.
Stream will be 128kbps for audio and 10000kbps for video:
Ex: -u stantz -s jserver -p 322 -d 0.0 -r 1920x1080 -o +1920,0 -f 60 -a 128 -v 10000

Egon connecting to jserver on ssh port 322, streaming the display 0.0
Stream will be 128kbps for audio and 10000kbps for video:
Egon wants untouched audio, 144fps and encode via intelgpu, he needs to correct video output levels
Ex: -u spengler -s jserver -p 322 -d 0.0 -f 144 -v 80000 --audioenc pcm --videoenc intelgpu --vplayeropts "--video-output-levels=limited"

I'm open to suggestions to make this software better!
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updated May 03 2021
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