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• Error : Error : Cannot find module '@ffmpeg.wasm/core-mt' Require stack :

  30 septembre 2023, par James

  I'm getting this error "Error : Error : Cannot find module '@ffmpeg.wasm/core-mt', When my code is deployed on Vercel (Node.js + TypeScript) Does I get confused because when I try to run the same code on my local machine it works fine

  


  But as I deploy it on Vercel it gives that error. Obviously, i do have "@ffmpeg.wasm/core-mt" installed as said in the package https://github.com/FFmpeg-wasm/FFmpeg.wasm#installation So how do I fix it ?

  


  I'm currently using it like this

  


  import { FFmpeg } from "@ffmpeg.wasm/main";

async function myFunction() {
    const ffmpeg = await FFmpeg.create({
        core: "@ffmpeg.wasm/core-mt",
        log: true,
    });
}


  


  However, in the docs, i see doing like this

  


    import { FFmpeg } from "@ffmpeg.wasm/main";
    
     const ffmpeg = await FFmpeg.create({
            core: "@ffmpeg.wasm/core-mt",
            log: true,
        });

    async function myFunction() {
        // use ffmpeg here
    }


  


  But then i start getting errors like "top-level 'await' expressions are only allowed when the 'module' option is set to 'es2022', 'esnext', 'system', 'node16', or 'nodenext', and the 'target' option is set to 'es2017' or higher."

  


  I tried a couple of StackOverflow solutions but nothing works in my case. So what should I do ?

  


  tsconfig.json :

  


  {
    "compilerOptions": {
     "module": "CommonJS",
     "esModuleInterop": true,
      "allowSyntheticDefaultImports": true,
      "target": "es2017",
      "noImplicitAny": true,
      "moduleResolution": "node",
      "sourceMap": true,
      "outDir": "dist",
      "baseUrl": ".",
      "paths": {
        "*": ["node_modules/*", "src/types/*"]
      }
    },
    "include": ["./src/**/*", "src/firebase/serviceAccountKey.ts"]
  }


  


• ffmpeg output to framebuffer (fbdev) Raspberry Pi 4

  30 mars 2022, par Alex Beavren

  I have been trying to play a video on the frame buffer with ffmpeg. In theory this

  


  ffmpeg -i /dev/video0 -pix_fmt bgra -f fbdev /dev/fb0


  


  I get errors like

  


  [fbdev @ 0xfcb380] Pixel format bgra is not supported, use rgb565le
av_interleaved_write_frame(): Invalid argument


  


  or
Interlace errors when I use rgb565le.

  


  Confusingly when I try to read from the framebuffer, I get a screenshot of incorrect resolution which looks like a blank tty.

  


  sudo ffmpeg -f fbdev -framerate 1 -i /dev/fb0 -frames:v 1 screenAA3.jpeg


  


  I am running on a RPi4 with latest buster build. I have had issues with graphical packages not working with the post vulkan driver, could that be the issue ?

  


• How do I read ffmpeg log with c# ?

  24 septembre 2018, par mr_blond

  I want to make "./ffmpeg -i vid.mkv" command, to get info and then I need to read it in c#.

  Thereby I run ffmpeg as Process :

  var proc = new Process
  
  {
  
      StartInfo = new ProcessStartInfo
  
      {
  
          FileName = "ffmpeg",
  
          Arguments = "-i vid.mkv",
  
          UseShellExecute = false,
  
          RedirectStandardOutput = true,
  
          CreateNoWindow = true
  
      }
  
  };

  Then I try to read id :

  proc.Start();
  
  while (!proc.StandardOutput.EndOfStream)
  
  {
  
      string line = proc.StandardOutput.ReadLine();
  
  }

  At the step

  proc.Start()

  new console window opens and ffmpeg writes log to it. And at the step

  while()

  proc.StandardOutput.EndOfStream becomes true.

  How do I read this log ?