Add video transcoding to H264/MP4, use high quality CRF 18

backend/src/routes/videos.ts

@@ -8,6 +8,7 @@ import {
     updateTier,
     getVideoByMapAndPlayer,
     updateVideoPB,
+    updateTranscodedKey,
 } from "../services/db";
 import {
     uploadObject,
@@ -19,6 +20,7 @@ import {
     completeMultipartUpload,
     abortMultipartUpload,
     getVideoStream,
+    transcodeVideo,
 } from "../services/rustfs";
 import { parseMtvFile } from "../services/mtv-parser";
 import { getMapInfo } from "../services/momentum-api";
@@ -343,6 +345,35 @@ export const videoRoutes = new Elysia({ prefix: "/api/videos" })
         };
     })
 
+    .post("/:id/transcode", async ({ params: { id } }) => {
+        const video = getVideoById(id);
+        if (!video) return status(404, { error: "Not found" });
+
+        if (video.transcodedKey) {
+            return {
+                ...video,
+                videoUrl: getStreamUrl(video.id),
+                mtvUrl: getObjectUrl(video.mtvKey),
+                thumbnailUrl: video.thumbnailKey
+                    ? getObjectUrl(video.thumbnailKey)
+                    : undefined,
+            };
+        }
+
+        const transcodedKey = await transcodeVideo(video.videoKey);
+        updateTranscodedKey(id, transcodedKey);
+
+        return {
+            ...video,
+            transcodedKey,
+            videoUrl: getStreamUrl(video.id),
+            mtvUrl: getObjectUrl(video.mtvKey),
+            thumbnailUrl: video.thumbnailKey
+                ? getObjectUrl(video.thumbnailKey)
+                : undefined,
+        };
+    })
+
     .get("/:id/stream", async ({ params: { id }, request, set }) => {
         const video = getVideoById(id);
         if (!video) return status(404, { error: "Not found" });
@@ -350,7 +381,10 @@ export const videoRoutes = new Elysia({ prefix: "/api/videos" })
         const rangeHeader = request.headers.get("Range");
 
         try {
-            const result = await getVideoStream(video.videoKey, rangeHeader);
+            const result = await getVideoStream(
+                video.transcodedKey ?? video.videoKey,
+                rangeHeader,
+            );
 
             const headers = new Headers();
             headers.set("Content-Type", result.contentType);
@@ -465,6 +499,8 @@ export const videoRoutes = new Elysia({ prefix: "/api/videos" })
             deleteObject(video.mtvKey),
         ];
         if (video.thumbnailKey) deletes.push(deleteObject(video.thumbnailKey));
+        if (video.transcodedKey)
+            deletes.push(deleteObject(video.transcodedKey));
         await Promise.all(deletes);
 
         deleteVideoById(id);