From afc9e3ac330c5218325d7866455e9c40af9a35a9 Mon Sep 17 00:00:00 2001
From: Daniel Langbein <daniel@systemli.org>
Date: Fri, 12 Jan 2024 22:21:14 +0100
Subject: [PATCH] add gstreamer.nix

---
 gstreamer.nix        | 20 ++++++++++++++++++++
 modules/programs.nix |  6 +++++-
 2 files changed, 25 insertions(+), 1 deletion(-)
 create mode 100644 gstreamer.nix

diff --git a/gstreamer.nix b/gstreamer.nix
new file mode 100644
index 0000000..4606375
--- /dev/null
+++ b/gstreamer.nix
@@ -0,0 +1,20 @@
+# Provides a shell environment with gstreamer.
+# Based on the example from https://nixos.wiki/wiki/GStreamer
+{ pkgs ? import <nixpkgs> {} }:
+pkgs.mkShell {
+  buildInputs = with pkgs; [
+    # Video/Audio data composition framework tools like "gst-inspect", "gst-launch" ...
+    gst_all_1.gstreamer
+    # Common plugins like "filesrc" to combine within e.g. gst-launch
+    gst_all_1.gst-plugins-base
+    # Specialized plugins separated by quality
+    gst_all_1.gst-plugins-good
+    gst_all_1.gst-plugins-bad
+    gst_all_1.gst-plugins-ugly
+    # Plugins to reuse ffmpeg to play almost every video format
+    gst_all_1.gst-libav
+    # Support the Video Audio (Hardware) Acceleration API
+    gst_all_1.gst-vaapi
+    #...
+  ];
+}
diff --git a/modules/programs.nix b/modules/programs.nix
index ff143c4..51b7a3c 100644
--- a/modules/programs.nix
+++ b/modules/programs.nix
@@ -19,7 +19,11 @@
       gnome.gnome-tweaks
       gnome.dconf-editor
       meld # Diff and merge tool
-      handbrake # Rip DVD and Blu-ray; rotate and export videos
+      # Rip DVD and Blu-ray; rotate and export videos.
+      # Requires gstreamer with plugins to preview encoded video.
+      #   nix-shell -p gstreamer.nix
+      #   ghb
+      handbrake
       mediainfo-gui # View video metadata.
 
       fractal # Matrix chat client.