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• Remove error when running ffmpeg in Windows script to shrink MP3 file

  19 octobre 2022, par K7AAY

  I use a script to downsize audiobook files.
  
The original audiobook file was concatenated from multiple MP3 files into one MP3 file.
  
The script (in Windows) relies on ffmpeg (version git-2020-06-26-7447045) and contains

  


  FOR %%A IN (dir *.mp3) DO ffmpeg -i "%%A" -c:a libmp3lame -q:a 8 "_%%A"


  


  However, this error message appears :

  


  


  deprecated pixel format used, make sure you did set range correctly
  
[mp3 @ 000001f026d56400] Frame rate very high for a muxer not efficiently supporting it.
  
Please consider specifying a lower framerate, a different muxer or -vsync 2

  


  


  How do I modify the script for greater efficiency and remove that error message ?

  


• ffmpeg set data stream codec tag when copying

  19 mars 2021, par user972014

  I use ffmpeg to copy a data stream from one file to the other using -c copy

  


  The problem is that it causes the output file to have no codec tag string. How can I set it ?

  


  The name of the original stream was :

  


  Stream #0:3(eng): Data: none (gpmd / 0x646D7067), 96 kb/s (default)
    Metadata:
      creation_time   : 2020-09-08 16:35:49
      handler_name    : GoPro MET


  


  While for the output file I get it is :

  


  Stream #0:2[0x102]: Data: bin_data ([6][0][0][0] / 0x0006)


  


  I'm using a commandline similar to that :

  


  ffmpeg -i video.mp4 -map 0:3 -c copy -metadata:s:d codec_tag=xxxx -vcodec libx264 converted4.ts


  


  I also tried handler=... handler_name=...

  


• How Can I Configure Storybook to Use React-App-Rewired ?

  8 août 2022, par joseph

  I'm working on a project that implements react-app-rewired to send headers to the server in order to bypass ReferenceError: SharedArrayBuffer is not defined (I'm getting this error from using the @ffmpeg/ffmpeg library).

  


  // config-overrides.js
const {
  override,
  // disableEsLint,
  // addBabelPlugins,
  // overrideDevServer
} = require('customize-cra')

module.exports = {
  devServer(configFunction) {
    // eslint-disable-next-line func-names
    return function (proxy, allowedHost) {
      const config = configFunction(proxy, allowedHost)

      // Set loose allow origin header to prevent CORS issues
      config.headers = {
        'Access-Control-Allow-Origin': '*',
        'Cross-Origin-Opener-Policy': 'same-origin',
        'Cross-Origin-Embedder-Policy': 'require-corp',
        'Cross-Origin-Resource-Policy': 'cross-origin'
      }

      return config
    }
  }
}


  


  // package.json
"scripts": {
  "start": "react-app-rewired start",
  "build": "react-app-rewired build",
  "test": "react-app-rewired test  --transformIgnorePatterns \"node_modules/(?!siriwave)/\"",
  "eject": "react-scripts eject",
  "storybook": "start-storybook -p 6006 -s public",
  "build-storybook": "build-storybook -s public"
}


  


  Though this works when I run npm start, meaning the headers get sent to the server, it doesn't work when I run npm run storybook, and I still get the SharedArrayBuffer is not defined error. I'm assuming it's because npm run storybook still uses react-scripts as opposed to react-app-rewired under the hood, but I'm not sure where I can change the configurations for this. Any ideas ?