add bulk remux script, add docs for remux configuration

config.example.json

@@ -2,6 +2,13 @@
   "port": 8182,
   "db-url": "mongodb://127.0.0.1:27017/mediahost",
   "media-folder": "private/",
+  "remux": {
+    "enabled": true,
+    "folder": "remux/",
+    "video-codec": "libx264",
+    "audio-codec": "aac",
+    "container": "mp4"
+  },
   "meta": {
     "name": "Media Host",
     "tagline": "Your one stop shop to host images, videos, audio and more.",

docs/get-started/configure.md

@@ -11,6 +11,13 @@ Here's the [`config.example.json`](../../config.example.json) file, if this suff
   "port": 8182,
   "db-url": "mongodb://127.0.0.1:27017/mediahost",
   "media-folder": "private/",
+  "remux": {
+    "enabled": true,
+    "folder": "remux/",
+    "video-codec": "libx264",
+    "audio-codec": "aac",
+    "container": "mp4"
+  },
   "meta": {
     "name": "Media Host",
     "tagline": "Your one stop shop to host images, videos, audio and more.",
@@ -47,6 +54,12 @@ If you're a bit confused, don't worry. This will help you understand each part o
 - `port` is the HTTP port the server will run on. If `port` is set to `8182`, the server should be at [`127.0.0.1:8182`](http://127.0.0.1:8182/).
 - `db-url` is the URL to the MongoDB server you want the metadata to be stored on. If you haven't messed with MongoDB's settings at all, leave this as is.
 - `media-folder` is where the files themselves are stored. If it's set to `private/`, the files should be inside `private/` folder in the root of the `media-host` folder.
+- `remux` is an object where you can set up remuxing a video via FFMPEG to be playable on the web, when not compatible.
+  - `enabled` is to enable or disable remuxing
+  - `folder` is the folder where remuxes live
+  - `video-codec` is the video codec it remuxes to
+  - `audio-codec` is the autio codec it remuxes to
+  - `container` is the container it remuxes to
 - `meta` is an object where basic metadata of the server is stored.
   - `name` is the name of the server, shown at the top of the page on every page.
   - `tagline` is the text under the title on every page.

scripts/remux-unplayable.js

@@ -0,0 +1,63 @@
+/* 
+  This is not a server file, but a command to remux files on your server.
+
+  Usage (in the root of the folder): node ./scripts/remux-unplayable.js
+*/
+
+const config = require("../config.json")
+const {MongoClient} = require("mongodb");
+const client = new MongoClient(config["db-url"], {useUnifiedTopology: true});
+const fs = require("fs");
+const {spawn} = require("child_process");
+const ffmpegStatic = require("ffmpeg-static");
+if (!config["media-folder"].startsWith("/")) {
+  config["media-folder"] = `${__dirname.split("/scripts")[0]}/${config["media-folder"]}`;
+}
+
+(async function() {
+  console.log("Connecting to DB...");
+  await client.connect();
+  console.log("- Connected to DB.");
+  let db = await client.db("mediahost");
+  let files = await db.collection("uploads");
+  let f = await files.find({}).toArray();
+  let a = [];
+
+  if (!fs.existsSync(config?.["remux"]?.["folder"])) fs.mkdirSync(config?.["remux"]?.["folder"]);
+
+  for (let c in f) {
+    if (f[c].mime.startsWith("video/")) {
+      if (
+        f[c].mime != "video/mp4" &&
+        f[c].mime != "video/webm" && 
+        !f[c].transcodedFile || !fs.existsSync(f[c].transcodedFile) 
+      ) {
+        console.log(`Remuxing ${f[c].id} [${f[c].name}]`);
+        await ffmpeg(f[c]);
+        a.push(f[c].id);
+      }
+    }
+  }
+  console.log(`Remuxed ${a.length} unplayable files from database.`)
+  process.exit();
+})()
+
+async function ffmpeg(file) {
+  let db = await client.db("mediahost");
+  let files = await db.collection("uploads");
+  return new Promise(function(resolve, reject) {
+    let originalFile = `${config["media-folder"]}/${file.id}/${file.name}`;
+    let transFile = `${config["remux"]["folder"]}/${file.id}/${file.name}.${config["remux"]["container"]}`; // based file
+    if (!fs.existsSync(`${config["remux"]["folder"]}/${file.id}`)) fs.mkdirSync(`${config["remux"]["folder"]}/${file.id}`);
+    let ffmpegProcess = spawn(ffmpegStatic, [`-i`, originalFile, `-vcodec`, config["remux"]["video-codec"], `-acodec`, config["remux"]["audio-codec"], `-preset`, `ultrafast`, transFile]);
+    
+    ffmpegProcess.on("close", async function(code) {
+      if (code == 0) {
+        file.transcodedFile = `/transcoded/${file.id}/${file.name}.${config["remux"]["container"]}`;
+        await files.findOneAndReplace({id: file.id}, file);
+        console.log(`- Remuxed ${file.id} [${file.name}]`);
+        resolve();
+      } else console.log(`ffmpeg failed on ${file.id}`);
+    });
+  })
+}

server.js

@@ -30,7 +30,7 @@ app.set("view engine", "ejs");
 app.use(cookieParser());
 app.use(cors());
 app.use(express.static("static/"));
-if (config["remux"]["folder"]) app.use("/transcoded/", express.static(config["remux"]["folder"]));
+if (config?.["remux"]?.["folder"]) app.use("/transcoded/", express.static(config?.["remux"]?.["folder"]));
 app.use("/temp", express.static(`temp/`));
 
 app.use(async function(req, res, next) {
@@ -87,7 +87,7 @@ app.use("/f/:id/dl", function(req, res, next) {
 });
 
 if (!fs.existsSync(config["media-folder"])) fs.mkdirSync(config["media-folder"])
-if (!fs.existsSync(config["remux"]["folder"])) fs.mkdirSync(config["remux"]["folder"])
+if (!fs.existsSync(config?.["remux"]?.["folder"])) fs.mkdirSync(config?.["remux"]?.["folder"])
 
 start();
 
@@ -513,7 +513,7 @@ app.post("/upload", async function (req, res, next) {
             mime: files.file.mimetype,
           };
 
-          if (data.mime.startsWith("video/")) data.needsTranscode = true;
+          if (data.mime.startsWith("video/") && data.mime != "video/mp4" && data.mime != "video/webm") data.needsTranscode = true;
 
           if (acc !== null && acc !== undefined) {
             data.uploader = acc._id;
@@ -1887,7 +1887,7 @@ async function initTranscode(id, mime) {
   let file = await files.findOne({id});
   
   if (mime == "video/mp4" || mime == "video/webm") {
-    if (config["remux"]["enabled"] == true) {
+    if (config?.["remux"]?.["enabled"] == true) {
       let originalFile = `${config["media-folder"]}/${id}/${file.name}`;
       let transFile = `${config["remux"]["folder"]}/${id}/${file.name}.${config["remux"]["container"]}`; // based file
       fs.mkdirSync(`${config["remux"]["folder"]}/${id}`);