feat: add encoding profiles for DVD and BluRay quality presets

src/commandBuilder.ts

@@ -1,16 +1,31 @@
 import { parsedVideoInfo } from "./types.ts";
 import { basename, dirname } from "@std/path";
+import { profile } from "./types.ts";
 
 function escapeFilename(filename: string): string {
   return filename.replace(/[^a-zA-Z0-9]/g, "");
 }
 
+const profiles: Record<string, profile> = {
+  "DVD": {
+    "crf": 29,
+    "preset": 2,
+    "filmGrain": 5,
+  },
+  "BluRay": {
+    "crf": 27,
+    "preset": 2,
+    "filmGrain": 5,
+  },
+};
+
 export function encodingCommandBuilder(videoInfo: parsedVideoInfo): string {
   let videoName: string | null = null;
   const videoPath = dirname(videoInfo.filename);
   if (videoInfo.metadata) {
     videoName = videoInfo.metadata.title;
   }
+  const profile = videoInfo.MPix < 1 ? profiles.DVD : profiles.BluRay;
   const args = [
     "ffmpeg \\\n",
     "-v",
@@ -27,16 +42,12 @@ export function encodingCommandBuilder(videoInfo: parsedVideoInfo): string {
     "-pix_fmt",
     "yuv420p10le \\\n",
   ];
-  if (videoInfo.MPix < 1) {
-    args.push("-crf", "29 \\\n");
-  } else {
-    args.push("-crf", "25 \\\n");
-  }
+  args.push("-crf", profile.crf + " \\\n");
   args.push(
     "-svtav1-params",
-    "tune=0:film-grain=5:scd=1:film-grain-denoise=1 \\\n",
+    `tune=0:film-grain=${profile.filmGrain}:scd=1:film-grain-denoise=1 \\\n`,
   );
-  args.push("-preset", "2 \\\n");
+  args.push("-preset", profile.preset + " \\\n");
 
   if (videoInfo.isAnamorphic || videoInfo.isInterlaced) {
     const filter_string: string[] = [];

src/types.ts

@@ -224,3 +224,9 @@ export interface parsedVideoInfo {
   audioStreams?: parsedAudioStream[];
   subtitleStreams?: parsedSubtitleStream[];
 }
+
+export interface profile {
+  crf: number;
+  preset: number;
+  filmGrain: number;
+}