fix: better gc usage

Author: DestroyCom

app/api/video-converter/route.ts

@@ -117,20 +117,20 @@ const mergeAudioVideo = (
     const ffmpegCommand = ffmpeg().input(video_path).input(audio_path);
 
     if (hasNvidiaGpu) {
-      ffmpegCommand.outputOptions([
-        "-c:v h264_nvenc",
-        "-preset fast",
-        "-cq 23",
-        "-c:a aac",
-        "-b:a 128k",
-      ]);
+      ffmpegCommand
+        .inputOptions(["-hwaccel cuda", "-hwaccel_device 0", "-c:v h264_cuvid"])
+        .outputOptions([
+          "-c:v h264_nvenc",
+          "-preset fast",
+          "-cq 23",
+          "-c:a copy",
+        ]);
     } else {
       ffmpegCommand.outputOptions([
         "-c:v libx264",
         "-preset ultrafast",
         "-crf 23",
-        "-c:a aac",
-        "-b:a 128k",
+        "-c:a copy",
       ]);
     }