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• TypeError : Cannot read property 'url' of undefined - ws

  28 juillet 2021, par Bawantha Rathnayaka

  I am trying to get URL starts with '/rtmp/', and extract the target RTMP URL.

  


  Uncaught TypeError : Cannot read property 'url' of undefined

  


  this is my server.js

  


    let match
  if (!(match = req.url.match(/^\/rtmp\/(.*)$/))) {
    ws.terminate() // No match, reject the connection.
    return
  }

  


  


• How can I decode MegaRace (93/94) .HNM videos ? — FFmpeg fails and legacy tools are missing [closed]

  29 juillet, par L P

  Goal

  


  

  • I want to convert the original full‑motion videos shipped with MegaRace (DOS, 1993/94) from Cryo’s proprietary HNM format into a modern, playable container (e.g. lossless AVI/PNG sequence).

  


  • Capturing the screen while the game runs is not an option : the target is the pure background animation (no sprites, no overlays, no DOSBox scaling filters, no subtitles).

  


  


  What I already have

  


  

  • Extracted all *.HNM files out of MEGARACE.DAT with Game Extractor.
    
(Directory listing : 100+ files from AZUR.HNM to VWBT5.HNM.)

  


  • Verified that they are indeed Cryo HNM : the wiki pages [1] and [2] say MegaRace uses an early variant (v1/v2) written by Pascal Urro (might also used in 92's Dune, 95's Lost Eden etc.).

  


  • Tried FFmpeg (from latest to earliest) with ffplay -f hnm -i EXPLO.HNM, but every file aborts with invalid resolution and invalid data found when processing input. Same for ffprobe and ffmpeg -i.

  


  • Searched for legacy tools :

    

    • hnmdec / hnm2avi — no longer included in modern ScummVM‑Tools ; seems to have been present at some point.

    


    • extract_cryo — source vanished.

    


    • Game Media Formats DirectShow Filters, by Valery Anisimovsky could, in theory, load the vendor codecs (CM6_*.dll) and expose them to DirectShow, but I haven't found the necessary Cryo DLLs shipped with MegaRace.

    


    


  


  • Looked at the DOSBox “Video Codec” folder – it only contains ZMBV (zmbv.dll, zmbv.inf), which is unrelated (that’s the codec DOSBox uses for screen‑capture).

  


  


  Environment

  


  

  • macOS Sequoia 15.5 on Apple Silicon (but I can boot Windows 11 ARM or use x86_64 VMs if the solution requires them).

  


  • No need for audio ; video stream alone is fine.

  


  


  Why this matters

  


  

  • Archiving early FMV assets is part of game preservation. MegaRace’s CG backgrounds are unique and currently inaccessible without running the whole DOS game.

  


  


  What I’m looking for

  


  

  • Specifications or source code for the HNM v1/v2 codec.

  


  • A working decoder (CLI or library) for any platform so I can batch‑convert all files.

  


  • Pointers on how to patch FFmpeg’s current libavcodec/hnm4video.c to support the older variant.

  


  • Alternatively, hints on extracting the player’s built‑in decoder from MEGARACE.EXE (or ScummVM’s internal implementation, if any) and wrapping it.

  


  • Any lead, paper, or old DOS utility is appreciated !

  


  


• Enabling libmp3lame for FFMPEG on elastic beanstalk

  13 octobre 2017, par Adam Sith

  I am trying to enable libmp3lame with FFMPEG in elastic beanstalk (Amazon Redhat Linux machine).

  I am able to successfully install FFMPEG in /ffmpeg.config with the following script :

  # .ebextensions/ffmpeg.config
  
  
  
  packages:
  
    yum:
  
      autoconf: []
  
      automake: []
  
      cmake: []
  
      freetype-devel: []
  
      gcc: []
  
      gcc-c++: []
  
      git: []
  
      libtool: []
  
      make: []
  
      nasm: []
  
      pkgconfig: []
  
      zlib-devel: []
  
  sources:
  
    /usr/local/src: http://ffmpeg.org/releases/ffmpeg-3.2.tar.bz2
  
  commands:
  
    ffmpeg_install:
  
        cwd: /usr/local/src/ffmpeg-3.2
  
        command: sudo ./configure --prefix=/usr && make && make install

  I need to install libmp3lame however. I’ve tried to do this with an --enable-libmp3lame flag and the directions here. The modified script :

  packages:
  
  yum:
  
      autoconf: []
  
      automake: []
  
      cmake: []
  
      freetype-devel: []
  
      gcc: []
  
      gcc-c++: []
  
      git: []
  
      libtool: []
  
      make: []
  
      nasm: []
  
      pkgconfig: []
  
      zlib-devel: []
  
  sources:
  
    /usr/local/src: http://ffmpeg.org/releases/ffmpeg-3.2.tar.bz2
  
  commands:
  
    01-install_libmp3lame:
  
        cwd: /usr/local/src/
  
        command: curl -L -O http://downloads.sourceforge.net/project/lame/lame/3.99/lame-3.99.5.tar.gz && tar xzvf lame-3.99.5.tar.gz && cd lame-3.99.5 && ./configure --prefix="$HOME/ffmpeg_build" --bindir="$HOME/bin" --disable-shared --enable-nasm && make && make install
  
    02-ffmpeg_install:
  
        cwd: /usr/local/src/ffmpeg-3.2
  
        command: sudo ./configure --enable-libmp3lame && --prefix=/usr && make && make install

  This doesn’t work. Command 01-install_libmp3lame completes. Command 02-ffmpeg_install fails because :

  [2017-10-12T20:55:19.324Z] INFO  [24606] - [Application update app-8fe3-123456_7895@111/AppDeployStage0/EbExtensionPreBuild/Infra-EmbeddedPreBuild/prebuild_3_clover_platform/Command 02-ffmpeg_install] : Activity execution failed, because: ERROR: libmp3lame >= 3.98.3 not found

  I have tried installing libmp3lame in /ffmpeg-3.2 and got the same issue.