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• Legal issues in shipping apps based on Electron framework (libffmpeg)

  21 juin 2021, par Manmohan Singh

  We're in the process of building and deploying a desktop based app on electron v 12.0.7. It'll be a (free) commercial software deployed to 2-3M users worldwide.
Recently our legal team enquired about the proprietary codecs bundled with chromium and I thought the best way to confirm this would be to reach out here.

  


  So, here're specific things that I need help with :

  


  


  1. Are we shipping chromium with proprietary codecs ? If yes, what are potentially contentious codecs that come by default in chromium bundled with electron v 12.0.7 ?

     


  


  2. Is there any documentation around how the electron team builds chromium (with what flags) ?

     


  


  3. Is the default libffmpeg.dylib/dll bundled with electron building ffmpeg with support for things like H.264 and MP3 codecs ?

     


  


  4. I noticed there are libffmpeg binaries available with each electron build, e.g. https://github.com/electron/electron/releases/download/v12.0.7/ffmpeg-v12.0.7-darwin-arm64.zip . What's the purpose of this binary ?

     


  


  


  Any help would be appreciated.

  


• FFMPEG - Apple 720p30 Surround MP4 H.264 AAC stereo ; Dolby Digital

  10 décembre 2020, par Dean Van Greunen

  i would like the FFmpeg cli settings which will match this (this is a handbrake preset)

  


  

  


  Here is the presetting file, I dont understand what these would be for ffmpeg.

  


  {
    "AlignAVStart": false,
    "AudioCopyMask": [
      "copy:aac",
      "copy:ac3",
      "copy:dtshd",
      "copy:dts",
      "copy:mp3",
      "copy:truehd",
      "copy:flac",
      "copy:eac3"
    ],
    "AudioEncoderFallback": "ac3",
    "AudioLanguageList": [],
    "AudioList": [
      {
        "AudioBitrate": 160,
        "AudioCompressionLevel": 0.0,
        "AudioDitherMethod": null,
        "AudioEncoder": "av_aac",
        "AudioMixdown": "stereo",
        "AudioNormalizeMixLevel": false,
        "AudioSamplerate": "auto",
        "AudioTrackQualityEnable": false,
        "AudioTrackQuality": -1.0,
        "AudioTrackGainSlider": 0.0,
        "AudioTrackDRCSlider": 0.0
      },
      {
        "AudioBitrate": 640,
        "AudioCompressionLevel": 0.0,
        "AudioDitherMethod": null,
        "AudioEncoder": "copy:ac3",
        "AudioMixdown": "none",
        "AudioNormalizeMixLevel": false,
        "AudioSamplerate": "auto",
        "AudioTrackQualityEnable": false,
        "AudioTrackQuality": -1.0,
        "AudioTrackGainSlider": 0.0,
        "AudioTrackDRCSlider": 0.0
      }
    ],
    "AudioSecondaryEncoderMode": true,
    "AudioTrackSelectionBehavior": "first",
    "ChapterMarkers": true,
    "ChildrenArray": [],
    "Default": false,
    "FileFormat": "av_mp4",
    "Folder": false,
    "FolderOpen": false,
    "Mp4HttpOptimize": false,
    "Mp4iPodCompatible": false,
    "PictureAutoCrop": true,
    "PictureBottomCrop": 0,
    "PictureLeftCrop": 0,
    "PictureRightCrop": 0,
    "PictureTopCrop": 0,
    "PictureDARWidth": 0,
    "PictureDeblockPreset": "off",
    "PictureDeblockTune": "medium",
    "PictureDeblockCustom": "strength=strong:thresh=20:blocksize=8",
    "PictureDeinterlaceFilter": "decomb",
    "PictureCombDetectPreset": "default",
    "PictureCombDetectCustom": "",
    "PictureDeinterlacePreset": "default",
    "PictureDeinterlaceCustom": "",
    "PictureDenoiseCustom": "",
    "PictureDenoiseFilter": "off",
    "PictureDenoisePreset": "light",
    "PictureDenoiseTune": "none",
    "PictureSharpenCustom": "",
    "PictureSharpenFilter": "off",
    "PictureSharpenPreset": "medium",
    "PictureSharpenTune": "none",
    "PictureDetelecine": "off",
    "PictureDetelecineCustom": "",
    "PictureItuPAR": false,
    "PictureKeepRatio": true,
    "PictureLooseCrop": false,
    "PictureModulus": 2,
    "PicturePAR": "auto",
    "PicturePARWidth": 0,
    "PicturePARHeight": 0,
    "PictureRotate": null,
    "PictureWidth": 1280,
    "PictureHeight": 720,
    "PictureForceHeight": 0,
    "PictureForceWidth": 0,
    "PresetDescription": "H.264 video (up to 720p30), AAC stereo audio, and Dolby Digital (AC-3) surround audio, in an MP4 container. Compatible with Apple iPhone 4, 4S, and later; iPod touch 4th, 5th Generation and later; iPad 1st Generation, iPad 2, and later; Apple TV 2nd Generation and later.",
    "PresetName": "Apple 720p30 Surround",
    "Type": 0,
    "UsesPictureFilters": true,
    "UsesPictureSettings": 1,
    "SubtitleAddCC": false,
    "SubtitleAddForeignAudioSearch": true,
    "SubtitleAddForeignAudioSubtitle": false,
    "SubtitleBurnBehavior": "foreign",
    "SubtitleBurnBDSub": false,
    "SubtitleBurnDVDSub": false,
    "SubtitleLanguageList": [],
    "SubtitleTrackSelectionBehavior": "none",
    "VideoAvgBitrate": 3000,
    "VideoColorMatrixCode": 0,
    "VideoEncoder": "x264",
    "VideoFramerate": "30",
    "VideoFramerateMode": "pfr",
    "VideoGrayScale": false,
    "VideoScaler": "swscale",
    "VideoPreset": "medium",
    "VideoTune": "",
    "VideoProfile": "high",
    "VideoLevel": "3.1",
    "VideoOptionExtra": "",
    "VideoQualityType": 2,
    "VideoQualitySlider": 21.0,
    "VideoQSVDecode": false,
    "VideoQSVAsyncDepth": 4,
    "VideoTwoPass": true,
    "VideoTurboTwoPass": false,
    "x264Option": null,
    "x264UseAdvancedOptions": false
  },


  


• rename files for language_REGION according to the standard ISO_3166-1 (http://en.wikipedia.org/wiki/ISO_3166-1), for Taiwan tha language is Chinese (zh) and the region is Taiwan (TW)

  6 septembre 2012, par Coto

  m localization/messages_pt_BR.js m localization/messages_pt_PT.js m localization/messages_zh_TW.js rename files for language_REGION according to the standard ISO_3166-1 (http://en.wikipedia.org/wiki/ISO_3166-1), for Taiwan tha language is Chinese (zh) and the region is Taiwan (...)