if no compression is needed, optimize for streaming

src/main.ts

@@ -26,7 +26,7 @@ const metadataAudio = `-metadata:s:a:0 title="System sounds and microphone" \
                        -metadata:s:a:1 title="System sounds" \
                        -metadata:s:a:2 title="Microphone"`;
 
-const extraArgs = "-movflags +faststart";
+const shareOpt = "-movflags +faststart";
 
 /** Register a new error  */
 const registerError = (win: BrowserWindow, err: string) => {
@@ -109,7 +109,6 @@ app.whenReady().then(() => {
          -map 0 -map 1:a -c:v copy \
          -disposition:a 0 -disposition:a:0 default \
          ${metadataAudio} \
-         ${extraArgs} \
          "${outFile}"`
         ).catch((e) => registerError(win, e));
 
@@ -185,7 +184,7 @@ app.whenReady().then(() => {
        -c:v ${codec} -b:v ${videoBitrate}k -pass 2 -c:a copy \
        ${mappingTracks} -f mp4 \
        ${metadataAudio} \
-       ${extraArgs} \
+       ${shareOpt} \
        "${finalFile}"`
     ).catch((e) => registerError(win, e));
 
@@ -198,6 +197,25 @@ app.whenReady().then(() => {
     return finalFile;
   };
 
+  /** Move metadata at the begenning of the file */
+  const moveMetadata = async (file: string) => {
+    const finalFile = getNewFilename(file, "Shareable - ");
+
+    // Optimize for streaming
+    await execute(
+      `"${ffmpegPath}" -y \
+       -i "${file}" \
+       -map 0 -codec copy \
+       ${shareOpt} \
+       "${finalFile}"`
+    ).catch((e) => registerError(win, e));
+
+    // Delete the old video file
+    deleteFile(file);
+
+    return finalFile;
+  };
+
   /* Context bridge */
   ipcMain.handle("argv", () => process.argv);
   ipcMain.handle("allowedExtensions", () => moviesFilter);
@@ -209,6 +227,7 @@ app.whenReady().then(() => {
     (_, file: string, bitrate: number, nbTracks: number) =>
       reduceSize(file, bitrate, nbTracks)
   );
+  ipcMain.handle("moveMetadata", (_, file: string) => moveMetadata(file));
   ipcMain.handle("exit", () => (error ? {} : app.quit()));
   ipcMain.handle("confirmation", (_, text: string) => confirmation(text));
 });

src/preload.ts

@@ -15,6 +15,7 @@ contextBridge.exposeInMainWorld("internals", {
   mergeAudio: (file: string) => ipcRenderer.invoke("mergeAudio", file),
   reduceSize: (file: string, bitrate: number, nbTracks: number) =>
     ipcRenderer.invoke("reduceSize", file, bitrate, nbTracks),
+  moveMetadata: (file: string) => ipcRenderer.invoke("moveMetadata", file),
   exit: () => ipcRenderer.invoke("exit"),
   confirmation: (text: string) => ipcRenderer.invoke("confirmation", text),
 });

src/scripts/renderer.ts

@@ -18,6 +18,7 @@ let internals: {
     bitrate: number,
     nbTracks: number
   ) => Promise<string>;
+  moveMetadata: (file: string) => Promise<string>;
   confirmation: (text: string) => Promise<void>;
 };
 
@@ -133,6 +134,11 @@ const main = async () => {
         bitrate,
         newFile.nbTracks
       );
+    } else {
+      updateMessage(`\nPréparation pour le partage...`, true, Mode.Append);
+
+      // Move the metadata to make it playable before everything is downloaded
+      finalTitle = await internals.moveMetadata(newFile.title);
     }
 
     // Append title to the list of processed files