From 11be139b2abf6743e929bfd5be667bf5d0647712 Mon Sep 17 00:00:00 2001
From: tiyn <tiyn@mail-mk.eu>
Date: Wed, 11 Jan 2023 02:08:02 +0100
Subject: [PATCH] gpu-screen-recorder/nvidia shadowplay: added

---
 wiki/linux/gpu_screen_recorder.md | 46 +++++++++++++++++++++++++++++++
 wiki/linux/nvidia.md              |  6 ++--
 wiki/nvidia.md                    | 13 +++++++++
 wiki/screen_capture.md            | 13 +++++++++
 4 files changed, 75 insertions(+), 3 deletions(-)
 create mode 100644 wiki/linux/gpu_screen_recorder.md
 create mode 100644 wiki/nvidia.md
 create mode 100644 wiki/screen_capture.md

diff --git a/wiki/linux/gpu_screen_recorder.md b/wiki/linux/gpu_screen_recorder.md
new file mode 100644
index 0000000..b60f39e
--- /dev/null
+++ b/wiki/linux/gpu_screen_recorder.md
@@ -0,0 +1,46 @@
+# GPU Screen Recorder
+
+[GPU Screen Recorder](https://git.dec05eba.com/gpu-screen-recorder/about/) is a
+utility similar to [Nvidia ShadowPlay](/wiki/nvidia.md#screen-capture).
+
+## Setup
+
+GPU Screen Recorder can be installed on some distributions by installing the
+`gpu-screen-recorder-git` package.
+An installation via [git](https://git.dec05eba.com/gpu-screen-recorder/about/)
+is always possible.
+
+## Usage
+
+The program features normal recording of the screen and recording in the so
+called replay mode.
+To start a simple screen recording run the following command.
+
+```sh
+gpu-screen-recorder -w $(xdotool selectwindow) -c mp4 -f 60 -a "$(pactl get-default-sink).monitor" -o test_video.mp4`
+```
+
+The window to record has to be selected first by clicking on it.
+The default audio device is already selected.
+
+To stop the recording `Ctrl-C` the previous command or use the command below.
+
+```sh
+killall -SIGINT gpu-screen-recorder
+```
+
+For the replay mode the recording can be started the following way.
+
+```sh
+gpu-screen-recorder -w $(xdotool selectwindow) -c mp4 -f 60 -a "$(pactl get-default-sink).monitor" -r 30 -o .`
+```
+
+In this case a replay will have the maximum length of 30 seconds (specified by
+`-r 30`).
+It is also important to assign the `-o` flag with a directory and not a file
+anymore.
+The last 30 seconds (replay) can then be sending a SIGUSR1 signal.
+
+```sh
+killall -SIGUSR1 gpu-screen-recorder
+```
diff --git a/wiki/linux/nvidia.md b/wiki/linux/nvidia.md
index bece1c2..f71aa63 100644
--- a/wiki/linux/nvidia.md
+++ b/wiki/linux/nvidia.md
@@ -1,10 +1,10 @@
-# NVidia
+# Nvidia
 
-NVidia is a vendor for graphics cards.
+[Nvidia](/wiki/nvidia.md) is a vendor for graphics cards.
 
 ## Setup
 
-For NVidia GPUs to work install the `nvidia` and the `nvidia-utils` package.
+For Nvidia GPUs to work install the `nvidia` and the `nvidia-utils` package.
 If you want to easily configure the monitors as described in a later section of
 this file you can also install `nvidia-settings`.
 
diff --git a/wiki/nvidia.md b/wiki/nvidia.md
new file mode 100644
index 0000000..49fd454
--- /dev/null
+++ b/wiki/nvidia.md
@@ -0,0 +1,13 @@
+# Nvidia
+
+[Nvidia](https://www.nvidia.com) is a vendor for graphics cards.
+These graphics cards are mainly supported for Windows systems but can be used on
+Linux based systems with some special caveats explained in the
+[Linux Nvidia entry](/wiki/linux/nvidia.md).
+
+### Screen Capture
+
+Nvidias program with several tools - called GeForce Experience - features
+software for hardware-accalerated [screen recordings](/wiki/screen_capture.md).
+This recording software is called Nvidia ShadowPlay.
+Nvidia Experience is currently only available on Windows systems.
diff --git a/wiki/screen_capture.md b/wiki/screen_capture.md
new file mode 100644
index 0000000..b64b660
--- /dev/null
+++ b/wiki/screen_capture.md
@@ -0,0 +1,13 @@
+# Screen Capture
+
+Screen capture describes the process of recording a computer screen.
+
+## Screen Capture options
+
+Windows systems using an Nvidia graphics card can make use of ShadowPlay a
+screen recording software integrated in Nvidias suite GeForce Experience.
+
+Linux systems can use the
+[GPU Screen Recorder](/wiki/linux/gpu_screen_recorder.md) to make
+gpu-accelerated screen recordings.
+It features similar features to ShadowPlay.