Recherche avancée

Sur d’autres sites (7056)

• Wrapping a H264 stream into a mkv container manually

  12 juin 2012, par stackVidec

  I have a stream set up that I can play in applications like VLC using the sdp handler created.

  The stream is already encoded into h264 and I now basically have a raw h264 video being streamed in.

  I've been using live 555 + openRSTP to play the stream and it writes it to a file without a container. They have outputs for file types like mov and mp4 where (looking through the code) they seem to manually write the header information of the container and then throw the video blocks into it using an abstraction of the frames being sent in and iterating through them.

  I would like to do this but write it to an mkv. Since I already have the blocks of video encoded, I would assume that I would just have to write the rest of the mkv information (header and other meta data in line with the mkv specification), but I can't find anything anywhere pertaining to that.

  I realize I can use ffmpeg for this but it would really suite the needs of my application to avoid using ffmpeg.

  Any relevant help would be greatly appreciated.

• G.I. Joe Custom Multimedia

  30 mars 2012, par Multimedia Mike — General

  I received this 3-disc set of G.I. Joe CD-ROMs today :

  
  
  

  Copyright 2003, and labeled as PC ONLY. Each disc claims to have 2 episodes. So are these some sort of video discs ? Any gaming elements ? I dove in to investigate.

  So, it turns out that there are some games on these discs, done in Flash Player (which tells me that these were probably available on the web at some point). Here’s a shooting gallery game from the first disc :

  
  
  

  As promised by the CD-ROM copy, the menu does grant access to 2 classic G.I. Joe episodes. Selecting either one launches this :

  
  
  

  Powered by C-ezy ? Am I interpreting that correctly ? Anyway, the video player goes fullscreen and looks fine (given the source material). I can’t capture screenshots and controls are limited to : space for pause, ESC to exit player, and up/down to control volume. No seeking and certainly no onscreen controls. Pretty awful player.

  Studying the first disc, I find a 550 MB file with the name 5859Hasbro.egm. Coupled with ep58.cfg and ep59.cfg files in the same directory, I gather that the disc has G.I. Joe episodes 58 and 59 (though the exact episodes, “There’s No Place Like Springfield” parts 1 and 2, are listed on Wikipedia as being episodes 154 and 155 ; but who’s counting ?). The cfg files contain this text :

  ep58.cfg :
  EGM_GIJOE.exe
  5859Hasbro.egm /noend /track:0 /singletrack
  ep59.cfg :
  
  EGM_GIJOE.exe
  
  5859Hasbro.egm /noend /track:1 /singletrack
  

  The big EGM file starts with the string “Egenie Player”. After that, I see absolutely no clues. The supporting EGM_GIJOE.exe file has some interesting strings : “Decore Bits Per Pixel” (I know I have seen “Decore” used to mean “decoding core” in some libraries), “Egenie Player – %s, Version :%s”, “4th June 2002″, a list of common FourCC tags seen in AVI files, “Brought to you by Martin, Patrick Bob and Bren” (do you suppose “Patrick Bob” is one person’s name ?), a list of command line options…

  Aha ! A URL : http:\www.e-genie.tv (yep, backslashes, not forward slashes). e-genie.tv seems to redirect to mygenie.tv, which… doesn’t appear to be strictly related to video technology these days.

• mpegts : Move the option section to the bottom

  10 juin 2014, par Luca Barbato

  mpegts : Move the option section to the bottom
  Makes it consistent with the rest of the formats and ease usage
  
  of macros constants for the defaults.
  

  • [DH] libavformat/mpegtsenc.c