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• anyone had success with OpenFP ? [closed]

  30 mai 2013, par Robert Shaw

  http://sourceforge.net/projects/open-fp/

  Built and ran openfp - a sound fingerprinting project available in many places. Includes :
  openfp_extract (calls ffmpeg) _server and _match.

  Hours today fiddling with the samples but I always get MATCH RESULTS 0, even with identical afp files in the signatures directory. What is the trick to get a match ?

  Usings PCM 16 mono 22kHz . Do endian and signed matter as long as its always the same ?

  I hope to try and match bird or animal sounds, anybody think it can work ?

  Thanks in advance ! - Robert

• Videoediting SDK C#

  10 avril 2013, par user2265112

  I'm currently working on a project were i have to collect a videostream from a videoserver. This is done by the videoservers SDK where i get a videoclip output.
  From this point i want to be able to cut at specific places in the videoclip or more specifically : trim out a specific part in the video.
  This will be done for three videoclips and then i want to combine these videos into one wide-screen split-screen videoclip. You should be able to see clip1,clip2,clip3 simultaneously in one frame.

  As of now i have a solution for this where i pass arguments to ffmpeg. This works but are relatively slow and i don't get errormessages if something goes wrong. Well, i use a streamreader to get some info.

  My question is : Is there a good well-documented library for C# i could use instead ? That ofcourse can provide the same functionality.
  I have looked at directshow but that didn't help me to much. And avisynth has the problem that it doesn't generate its own videoclip, if im not mistaken ?

  Kind Regards.

• How Many Default Languages ?

  26 janvier 2012, par Multimedia Mike — Programming

  I was thinking back to my childhood, when my family first owned a computer. It was an MS-DOS-powered IBM PC. The default OS came with 2 programming environments, such as they were : GW-BASIC and batch files. It was a start, I suppose. I guess most any microcomputer you can name from that era came with some kind of BASIC interpreter. That defined the computer’s “out of the box” programmability.

  Then I started wondering how this compares to computers (operating systems/distributions, really) these days. So I installed a fresh version of the latest Ubuntu Linux version (11.10 as of this writing ; x86_32) and looked for programmability (without installing anything else). This is what I came up with :

  1. gcc/C (only the C compiler ; other components of the GNU compiler collection are installed separately)
  2. Perl
  3. Python
  4. C#, as furnished by Mono
  5. Bash — can’t forget about the shell as a full-featured programming language (sh is also present, but not t/csh)
  6. JavaScript — since Firefox is installed per default, JS counts
  7. GNU Assember — thanks to Reimar for the reminder that if gcc is present, gas necessarily needs to be there as well

  I checked on C++, Objective C, Java, Ada, Fortran, Go, Lua, Ruby, Tcl, PHP, R and other languages I could think of, but the above items were the only ones present by default. At the same time, I checked my Mac OS X (10.6) box and it also has Ruby and PHP installed. It has a bunch of other languages, courtesy of Xcode, so I can’t certify anything about its out of the box programmability.

  Still, I think “embarrassment of riches” pretty well sums it up. I try not to be crotchety old fogey complaining that kids these days don’t know how good they have it ; rather, I’m genuinely excited for anyone who wants to leap into computer programming in this day and age.