Adds a converter for converting video audio to vorbis

src/main/java/net/knarcraft/ffmpegconverter/FFMpegConvert.java

@@ -3,6 +3,7 @@ package net.knarcraft.ffmpegconverter;
 import net.knarcraft.ffmpegconverter.config.Configuration;
 import net.knarcraft.ffmpegconverter.converter.AnimeConverter;
 import net.knarcraft.ffmpegconverter.converter.AudioConverter;
+import net.knarcraft.ffmpegconverter.converter.AudioToVorbisConverter;
 import net.knarcraft.ffmpegconverter.converter.Converter;
 import net.knarcraft.ffmpegconverter.converter.DownScaleConverter;
 import net.knarcraft.ffmpegconverter.converter.LetterboxCropper;
@@ -98,7 +99,8 @@ public class FFMpegConvert {
                 9. mp4 Subtitle Embed
                 10. Anime to h265 all streams
                 11. Stream reorder
-                12. Letterbox cropper""", 1, 12);
+                12. Letterbox cropper
+                13. Video's Audio to vorbis converter""", 1, 13);
 
         return switch (choice) {
             case 1 -> generateWebAnimeConverter();
@@ -113,6 +115,7 @@ public class FFMpegConvert {
             case 10 -> generateAnimeConverter();
             case 11 -> generateStreamOrderConverter();
             case 12 -> new LetterboxCropper(FFPROBE_PATH, FFMPEG_PATH);
+            case 13 -> new AudioToVorbisConverter(FFPROBE_PATH, FFMPEG_PATH);
             default -> null;
         };
     }

src/main/java/net/knarcraft/ffmpegconverter/converter/AudioToVorbisConverter.java

@@ -0,0 +1,84 @@
+package net.knarcraft.ffmpegconverter.converter;
+
+import net.knarcraft.ffmpegconverter.container.FFMpegCommand;
+import net.knarcraft.ffmpegconverter.container.StreamProbeResult;
+import net.knarcraft.ffmpegconverter.converter.module.ConverterModule;
+import net.knarcraft.ffmpegconverter.converter.module.DebugModule;
+import net.knarcraft.ffmpegconverter.converter.module.ModuleExecutor;
+import net.knarcraft.ffmpegconverter.converter.module.mapping.MapAllModule;
+import net.knarcraft.ffmpegconverter.converter.module.output.CopySubtitlesModule;
+import net.knarcraft.ffmpegconverter.converter.module.output.CopyVideoModule;
+import net.knarcraft.ffmpegconverter.converter.module.output.SetOutputFileModule;
+import net.knarcraft.ffmpegconverter.streams.AudioStream;
+import net.knarcraft.ffmpegconverter.streams.SubtitleStream;
+import net.knarcraft.ffmpegconverter.streams.VideoStream;
+import net.knarcraft.ffmpegconverter.utility.FFMpegHelper;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * A converter to convert a video's audio into flac
+ */
+public class AudioToVorbisConverter extends AbstractConverter {
+
+    /**
+     * Initializes variables used by the abstract converter
+     *
+     * @param ffprobePath <p>Path/command to ffprobe.</p>
+     * @param ffmpegPath  <p>Path/command to ffmpeg.</p>
+     */
+    public AudioToVorbisConverter(String ffprobePath, String ffmpegPath) {
+        super("mkv");
+        this.ffprobePath = ffprobePath;
+        this.ffmpegPath = ffmpegPath;
+    }
+
+    @Override
+    public @NotNull List<String> getValidFormats() {
+        return this.videoFormats;
+    }
+
+    @Override
+    public @Nullable FFMpegCommand generateConversionCommand(@NotNull String executable, @NotNull StreamProbeResult probeResult, @NotNull String outFile) {
+        FFMpegCommand command = FFMpegHelper.getFFMpegGeneralFileCommand(executable, probeResult.parsedFiles());
+        List<ConverterModule> modules = new ArrayList<>();
+
+        if (this.debug) {
+            modules.add(new DebugModule());
+        }
+
+        // Map video if present
+        List<VideoStream> videoStreams = probeResult.getVideoStreams();
+        if (!videoStreams.isEmpty()) {
+            modules.add(new MapAllModule<>(videoStreams));
+            modules.add(new CopyVideoModule());
+        }
+
+        // Map audio if present
+        List<AudioStream> audioStreams = probeResult.getAudioStreams();
+        if (!audioStreams.isEmpty()) {
+            modules.add(new MapAllModule<>(audioStreams));
+            setOutputIndexes(audioStreams);
+        }
+
+        // Map subtitles if present
+        List<SubtitleStream> subtitleStreams = probeResult.getSubtitleStreams();
+        if (!subtitleStreams.isEmpty()) {
+            modules.add(new MapAllModule<>(subtitleStreams));
+            setOutputIndexes(subtitleStreams);
+            modules.add(new CopySubtitlesModule());
+        }
+
+        // Map any fonts, cover images or similar
+        modules.add(new MapAllModule<>(probeResult.getOtherStreams()));
+
+        // Set output file and execute
+        modules.add(new SetOutputFileModule(outFile));
+        new ModuleExecutor(command, modules).execute();
+        return command;
+    }
+
+}

src/main/java/net/knarcraft/ffmpegconverter/converter/MkvH265ReducedConverter.java

@@ -8,7 +8,6 @@ import net.knarcraft.ffmpegconverter.converter.module.ModuleExecutor;
 import net.knarcraft.ffmpegconverter.converter.module.hardwarecoding.H265HardwareEncodingModule;
 import net.knarcraft.ffmpegconverter.converter.module.hardwarecoding.HardwareDecodeModule;
 import net.knarcraft.ffmpegconverter.converter.module.mapping.MapAllModule;
-import net.knarcraft.ffmpegconverter.converter.module.output.CopyAudioModule;
 import net.knarcraft.ffmpegconverter.converter.module.output.CopySubtitlesModule;
 import net.knarcraft.ffmpegconverter.converter.module.output.FastStartModule;
 import net.knarcraft.ffmpegconverter.converter.module.output.SetOutputFileModule;
@@ -70,7 +69,8 @@ public class MkvH265ReducedConverter extends AbstractConverter {
         if (!audioStreams.isEmpty()) {
             modules.add(new MapAllModule<>(audioStreams));
             setOutputIndexes(audioStreams);
-            modules.add(new CopyAudioModule(audioStreams));
+            command.addOutputFileOption("-c:a", "flac");
+            command.addOutputFileOption("-compression_level", "12");
         }
 
         // Map subtitles if present