Lunar-tear video optimizer

This is a Lua helper script to re-encode your movie assets under assets/revision/0/resources using ffmpeg to save on loading times, bandwidth and disk space.

Original videos are big and poorly-encoded, thus it plummets game load speed if playing on a remote server.

Game loading time is generally an important factor only for remote hosters, as if you host your server on your own machine and play on emulator/real device inside the same network, loading times will not significantly decrease for you after re-encoding.

Prerequisites

• Populated and functional lunar-tear server
• assetbundles/patch_listbin.py and octo_pb2.py scripts from lunar-scripts repo
  • also python3
  • and pip install protobuf
• Lua runtime (5.1+)
  • Windows: https://github.com/rjpcomputing/luaforwindows/releases
  • Debian/Ubuntu: sudo apt-get install lua5.1
• ffmpeg
  • Windows: https://github.com/GyanD/codexffmpeg/releases
  • Debian/Ubuntu: sudo apt-get install ffmpeg

Instructions

1. Download optimize_videos.lua and put it somewhere near the server repo (e.g. beside the lunar-tear repository folder)
2. Run lua optimize_videos.lua --input lunar-tear/server/assets/revisions/0/resources
3. Navigate through the program and wait until ffmpeg re-encode finishes.
4. Folder "encoded" should appear in the same directory as the script. It contains now re-encoded films. Copy the contents of this folder into lunar-tear/server/assets/revisions/0/resources with replace.
5. Patch list.bin using python3 patch_listbin.py lunar-tear/server/assets/revisions/0/list.bin. This step may be slow, especially on Windows. Windows defender may inhibit the work of the script, so you're better off disabling it while the script is running.
6. Profit!

Utility flags

Flag	Default	Description
--input	.	Path to directory with videos to re-encode. Should point to revisions/0/resources
--output	encoded	Output folder, under which re-encoded files will be placed
--skip-checks	false	Skip ffmpeg availability check
--verbose	false	Display re-encoded files and commands used to encode them after the process finishes