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• how to build built-in video editor using HTML, CSS, JS ? [closed]

  29 avril 2021, par Ayca Solmaz

  I'm trying to build a website with a built in video editor where the user would upload a video and the video would just show up on the video editor and from there they can trim the video (let's say from 1:24-2:30)

  


  I have basic knowledge on FFMPEG but I was looking for a way to do this with Javascript. I have a slider where you can select a range, it's just the trimming part I'm struggling with. I have set up UI's as well where there're two sliders to select the range and a trim button. I'd appreciate any help at this point.

  


• StdioURLProtocolHandlerTest failed while Xuggler build under Windows

  26 mars 2012, par Dims

  Trying to build Xuggler under Windows. My Windows is x64 Win 7 prof, but all used libraries are 32bit. I am running build procedure under MinGW/MSys, from under Msys shell with the followinf script :

  #!/bin/sh
  
  export JAVA_HOME=/C/Program\ Files\ \(x86\)/Java/jdk1.6.0_25
  
  export XUGGLE_HOME=/C/Xuggler
  
  
  
  PATH=$XUGGLE_HOME/bin:/C/Program\ Files\ \(x86\)/Java/jdk1.6.0_25/bin:/d/APPS/msysgit/msysgit/bin/git:/D/APPS/MinGW/bin:/bin:/D/APPS/apa    che-ant-1.8.2/bin:/D/Users/Dims/Design/MinGW/Util:$PATH
  
  ant -Dbuild.m64=no run-tests

  The error follows

   [exec] Running 6 tests..
  
   [exec] In StdioURLProtocolHandlerTest::testRead:
  
   [exec] ../../../../../../../../../test/csrc/com/xuggle/xuggler/io/StdioURLProtocolHandlerTest.cpp:108: Error: Expected (4546420 == totalBytes), found (4546420 != 1042)
  
   [exec] In StdioURLProtocolHandlerTest::testReadWrite:
  
   [exec] ../../../../../../../../../test/csrc/com/xuggle/xuggler/io/StdioURLProtocolHandlerTest.cpp:185: Error: Expected (4546420 == totalBytes), found (4546420 != 1042)
  
   [exec] In StdioURLProtocolHandlerTest::testSeek:
  
   [exec] ../../../../../../../../../test/csrc/com/xuggle/xuggler/io/StdioURLProtocolHandlerTest.cpp:139: Error: Expected (4546420 == totalBytes), found (4546420 != 1042)
  
   [exec] .
  
   [exec] Failed 3 of 6 tests
  
   [exec] Success rate: 50%
  
   [exec] FAIL: xugglerioTestStdioURLProtocolHandler.exe

  My questions is : did anybody did this on Windows and did he/she have this test passed ? :)

  UPDATE 1

  The test code is follows :

  int32_t totalBytes = 0;
  
  do {
  
      unsigned char buf[2048];
  
      retval = handler->url_read(buf, (int)sizeof(buf));
  
      if (retval > 0)
  
           totalBytes+= retval;
  
  } while (retval > 0);
  
  VS_TUT_ENSURE_EQUALS("", 4546420, totalBytes);

  While the url_read code is follows :

  int
  
  StdioURLProtocolHandler :: url_read(unsigned char* buf, int size)
  
  {
  
      if (!mFile)
  
          return -1;
  
      return (int) fread(buf, 1, size, mFile);
  
  }

  I don't understand, under what circumstances it can return 1042 ??? May be 64 bits play here somehow ?

  UPDATE 2

  I printed out filename used and it was

  d:/......./../../../test/fixtures/testfile.flv

  the path is correct, but started with d:/ not with /d/

  Can this play a role under Msys ?

• how to use libavcodec/ffmpeg to find duration of video file

  15 octobre 2019, par Kunal Vyas

  I needed a library to perform basic functions such as length, size, etc of a video file (i’m guessing through the metadata or tags) so I chose ffmpeg. Valid video formats are primarily those prevalent in movie files viz. wmv, wmvhd, avi, mpeg, mpeg-4, etc. If you can, please help me with the method(s) to be used for knowing the duration the video file. I’m on a Linux platform.