add video exporting

HOWTO.md

@@ -4,19 +4,35 @@ This is a guide to populating the `data` working folder found in this applicatio
 **This project will only repack audio on Reverse 3.07 properly.**
 
 ## Table of Contents (sorted by descending time consumption)
-1. [Song Audio](#song-audio-datamer_bgm)
-2. [Jackets](#jackets-datajackets)
-3. [Metadata](#metadata-datamusicparametertable)
-4. [Charts](#charts-datamusicdata)
+1. [Videos](#videos-datamovies)
+2. [Song Audio](#song-audio-datamer_bgm)
+3. [Jackets](#jackets-datajackets)
+4. [Metadata](#metadata-datamusicparametertable)
+5. [Charts](#charts-datamusicdata)
+
+## Videos (`data/movies`)
+*~4.1 GB*
+
+If you want to export music videos, the process for doing so involves a **lot** of waiting; it's automated but took me ~1 hour to finish and used up all of my CPU bandwidth during that time, though I could do some steps while this ran.
+
+Videos exported using this process may not play properly as mentioned in [this issue](https://github.com/muskit/WacK-Repackager/issues/2).
+
+You will need [FFmpeg](https://www.ffmpeg.org/download.html) installed and on PATH.
+
+1. Set the paths in `convert-videos.bat/sh` as needed:
+    - `video_path` to `app/WindowsNoEditor/Mercury/Content/Movie`
+    - `export_path` to `data/movies`
+2. Run `convert-videos.bat/sh` to convert all .usm videos to .mp4 in your data folder.
+    - This script will take a **very** long time to finish.
 
 ## Song Audio (`data/MER_BGM`)
-*~18.8 GB for WAVs*
+*~18.8 GB WAVs*
 
 Due to the audio indexing data in this project only done for **Reverse 3.07**, this process will only work for files of that version.
 
 You will need the latest version of [Audio Cue Editor (ACE)](https://github.com/LazyBone152/ACE).
 
-For each of the files below located in `<WAC>/app/WindowsNoEditor/Mercury/Content/Sound/Bgm`...
+For each of the files below located in `app/WindowsNoEditor/Mercury/Content/Sound/Bgm`...
 
 - MER_BGM.awb
 - MER_BGM_V3_01.awb
@@ -50,7 +66,7 @@ For each of the files below located in `<WAC>/app/WindowsNoEditor/Mercury/Conten
 For this, you will need [UE Viewer](https://www.gildor.org/en/projects/umodel).
 
 1. Run `umodel_64.exe` and configure its Startup Options.
-    - Set "Path to game files" to `<WAC>/app/WindowsNoEditor/Mercury/Content/UI/Textures/JACKET`.
+    - Set "Path to game files" to `app/WindowsNoEditor/Mercury/Content/UI/Textures/JACKET`.
     - Enable "Override game detection" and set it to "Unreal engine 4.19".
     - Click OK.
 2. In the left panel, right click on "All packages", then click on "Export folder content".
@@ -60,8 +76,8 @@ For this, you will need [UE Viewer](https://www.gildor.org/en/projects/umodel).
 ## Metadata (`data/MusicParameterTable.*`)
 *<1 MB*
 
-In `<WAC>/app/WindowsNoEditor/Mercury/Content/Table/`, simply copy `MusicParameterTable.uasset` and `MusicParameterTable.uexp` into `data`.
+In `app/WindowsNoEditor/Mercury/Content/Table/`, simply copy `MusicParameterTable.uasset` and `MusicParameterTable.uexp` into `data`.
 
 ## Charts (`data/MusicData`)
 *~59.5 MB*
-Simply copy the `MusicData` folder at `<WAC>/app/WindowsNoEditor/Mercury/Content/` into `data`.
+Simply copy the `MusicData` folder at `app/WindowsNoEditor/Mercury/Content/` into `data`.

convert-videos.bat

@@ -0,0 +1,7 @@
+@echo off
+
+:: Set paths here first before running!!!
+set video_path="\app\WindowsNoEditor\Mercury\Content\Movie"
+set export_path=".\data\movies"
+
+for %%i in (%video_path%\*.usm) do ffmpeg -n -f mpegvideo -i "%%i" "%export_path%\%%~ni.mp4"

convert-videos.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+
+# Set paths here first before running!!!
+video_path="App/WindowsNoEditor/Mercury/Content/Movie/"
+output_path="./data/movies/"
+
+for file in "$video_path"/*.usm; do
+    output_file="$output_path/$(basename "$file" .usm).mp4"
+    echo $file
+    echo $output_file
+    ffmpeg -n -f mpegvideo -i "$file" "$output_file"
+done

src/Data/Song/Consts.cs

@@ -66,4 +66,12 @@ public static class Consts
         {Difficulty.Expert, "NotesDesignerExpert"},
         {Difficulty.Inferno, "NotesDesignerInferno"},
     };
+
+    public static readonly IReadOnlyDictionary<Difficulty, string> DIFF_MOVIE_KEY = new Dictionary<Difficulty, string>()
+    {
+        {Difficulty.Normal, "MovieAssetName"},
+        {Difficulty.Hard, "MovieAssetNameHard"},
+        {Difficulty.Expert, "MovieAssetNameExpert"},
+        {Difficulty.Inferno, "MovieAssetNameInferno"},
+    };
 }

src/ExportOperation/Exporter.cs

@@ -2,8 +2,10 @@ using System;
 using System.Collections.Generic;
 using System.Diagnostics.Contracts;
 using System.IO;
+using Avalonia.Data.Converters;
 using MercuryConverter.Data;
 using MercuryConverter.UI.Views;
+using MercuryConverter.Utility;
 using SaturnData.Notation.Serialization;
 
 namespace MercuryConverter.ExportOperation;
@@ -43,14 +45,16 @@ public class Exporter
         Console.WriteLine($"Exporting {song.Id} to {exportSongPath}");
 
         var entryCharts = song.GetEntryCharts();
-        HashSet<string> processedAudio = new();
+        HashSet<string> finishedAudio = new();
+        HashSet<string> finishedMovies = new();
+        string prevMovie = "-";
 
         foreach (var ec in entryCharts)
         {
             /// AUDIO ///
             var audioKey = ec.Item1.AudioPath;
             var audioExportFileName = $"{audioKey}.{options.AudioFormat.ToString().ToLower()}";
-            if (!processedAudio.Contains(audioKey) && Database.AudioPaths.ContainsKey(audioKey))
+            if (!finishedAudio.Contains(audioKey) && Database.AudioPaths.ContainsKey(audioKey))
             {
                 var audioSourcePath = Database.AudioPaths[audioKey];
 
@@ -65,10 +69,40 @@ public class Exporter
                         File.Copy(audioSourcePath, Path.Combine(exportSongPath, audioExportFileName), true);
                         break;
                 }
-                processedAudio.Add(audioKey);
+                finishedAudio.Add(audioKey);
             }
             ec.Item1.AudioPath = audioExportFileName;
 
+            /// VIDEO ///
+            // mv_... = set video
+            // null = use previously set video
+            // - = disable video
+            if (!options.ExcludeVideo)
+            {
+                var movieProp = song.assetData[Consts.DIFF_MOVIE_KEY[ec.Item1.Difficulty]];
+
+                string movie;
+                if (movieProp.RawValue == null)
+                    movie = prevMovie;
+                else
+                    movie = movieProp.ToString()!;
+
+                if (movie != "-")
+                {
+                    var vidFileName = $"{movie}.mp4";
+                    if (!finishedMovies.Contains(movie))
+                    {
+                        var vidPath = Path.Combine(Settings.I!.DataPath, "movies", vidFileName);
+                        // TODO: check file's existence to avoid program crash
+                        File.Copy(vidPath, Path.Combine(exportSongPath, vidFileName), true);
+
+                        finishedMovies.Add(movie);
+                    }
+                    ec.Item1.VideoPath = vidFileName;
+                }
+                prevMovie = movie;
+            }
+            
             /// CHART ///
             var chartExt = 
                 options.ChartFormat == FormatVersion.SatV1 ||
@@ -81,8 +115,7 @@ public class Exporter
                 ec.Item1, ec.Item2,
                 new NotationWriteArgs { FormatVersion = options.ChartFormat }
             );
-
-            // restore audio key in db AFTER exporting metadata / chart
+            // restore audio key in db AFTER exporting metadata
             ec.Item1.AudioPath = audioKey;
         }
 

src/UI/Views/Export/Export.axaml

@@ -40,7 +40,7 @@
                     <TextBlock Name="NoFFMpegMessage" Text="Could not find FFmpeg. Make sure it is installed and on PATH!" TextWrapping="Wrap" Foreground="Red" FontWeight="DemiBold" Opacity="0.8" FontSize="12"/>
                 </StackPanel>
 
-                <CheckBox Name="TickExcludeVideos" Content="Exclude videos" IsChecked="True" IsEnabled="False"/>
+                <CheckBox Name="TickExcludeVideos" Content="Exclude videos"/>
                 <CheckBox Name="TickGroupExports" Content="Group song folders by release version"/>
                 <!-- <CheckBox Content="Delete original files"/> -->