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• Multimedia Exploration Journal : The Past Doesn’t Die

  12 juillet 2011, par Multimedia Mike — Game Hacking

  New haul of games, new (old) multimedia formats.

  Lords of Midnight
  Check out the box copy scan for Lords of Midnight in MobyGames. In particular, I’d like to call your attention to this little blurb :

  
  
  

  Ahem, "Journey through an immense world — the equivalent of 8 CD-ROMs." Yet, when I procured the game, it only came on a single CD-ROM. It’s definitely a CD-ROM (says so on the disc) and, coming from 1995, certainly predates the earliest DVD-ROMs (which can easily store 8 CD-ROMs on a disc). Thus, I wanted to jump in a see if they were using some phenomenal compression in order to squeeze so much info into 600 or so megabytes.

  I was surprised to see the contents of the disc clocking in at just under 40 megabytes. An intro movie and an outro movie account for 75% of that. Format ? None other than that curious ASCII anomaly, ARMovie/RPL with Escape 122 codec data.

  Cyclemania

  
  
  

  Cyclemania is one of those FMV backdrop action games, but with a motorcycle theme. I had a good feeling I would find some odd multimedia artifacts here and the game didn’t disappoint. The videos are apparently handled using 3-4 discrete files per animation. I’ve documented my cursory guesses and linked some samples at the new MultimediaWiki page.

  Interplay ACMP
  This is unrelated to this particular acquistion, but I was contacted today about audio files harvested from the 1993 DOS game Star Trek : Judgment Rites. The files begin with the ASCII signature "Interplay ACMP Data". This reminds me of Interplay MVE files which begin with the similar string "Interplay MVE File". My theory is that these files use the ACOMP compression format, though I’m still trying to make it fit.

  Wiki and samples are available as usual if you’d like to add your own research.

• ffmpeg on windows mobile with C#

  19 septembre 2017, par Riv

  I need to work with FFmpeg for windows mobile with C#, in fact I want build player for .m4b,.m4a files. I know that the TCPMP is exist, but I want to make my own.
  So I want to use .Net, and I have some questions :

  1. If I use some C# FFmpeg wrappers, for example TaoFramework, will it work on windows mobile(in case if I use FFmpeg lib compiled for windows mobile) ?

  2. In FFmpeg wiki I found this

  Once you have compiled, or downloaded,
  the Windows DLLs for FFmpeg, you can
  use .Net Platform Invoke (PI) to
  access the functions in the libraries
  libavformat and libavcodec.
  Link to source...

  But I don’t know how can I use it ? I tried to make it with dll that I had downloaded from http://ffmpeg.arrozcru.org/autobuilds/. Maybe I need to compile ffmpeg by myself for this option ?

  And last question is - what is libavcodec ? When I downloaded shared build, I got avcodec-52.dll, avfilter-1.dll, ffmpeg.exe, but I coudn’t find libavcodec.dll, or it’s just alias ?

• FFmpeg concat in android

  13 avril 2018, par fvn

  I have trying to concat multiple videos (mp4 or mov)on Android Studio using FFMPEG. I have managed to get vidoes in an arrayList and their path like this :

  private List<string> getSelectedVideos(Intent data) {
  
  
  
          List<string> result = new ArrayList&lt;>();
  
  
  
          ClipData clipData = data.getClipData();
  
          if(clipData != null) {
  
              for(int i=0;icode></string></string>

  I have looked online on how to concat vidoes using FFMPEG https://trac.ffmpeg.org/wiki/Concatenate

  However I’m not sure how to do it using Android studio. Any help would be much appreciated.