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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.

• ffmpeg4android dont add watermark with text

  2 octobre 2017, par hidura

  Hello I am trying to add to a video a picture and text, but have prove to be impossible the compilation crash on all the phones except for one.
  Here is the code :

  String[] complexCommand = {"ffmpeg","-y" ,"-i", "/sdcard/diego.mp4","-strict","experimental", "-vf",
  
                      "movie=/sdcard/Pictures/tshirt.png [watermark]; [in][watermark] overlay=main_w-overlay_w-10:10 [out]",
  
                      "-s", "1080x1200","-r", "30", "-b", "15496k", "-vcodec", "mpeg4","-ab",
  
                      "48000", "-ac", "2", "-ar", "22050", "/sdcard/out.mp4"};
  
              vk.run(complexCommand, workFolder, getApplicationContext());

• avformat/mxf : fix NTSC 59.94 samples per frame layout

  24 mai 2018, par Marton Balint

  avformat/mxf : fix NTSC 59.94 samples per frame layout
  FFmbc uses this.
  
  bmx uses this.
  
  XAVC MXF Mapping and Operating Points prefers this.
  
  Basic rounding rules also yields these numbers.
  Signed-off-by : Marton Balint <cus@passwd.hu>
  

  • [DH] libavformat/mxf.c