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• Mingw-w64 builded FFmpeg doesn't show any usage information

  26 octobre 2013, par user1240328

  First I wanted to modificate ffplay according to my requirments. Then I noticed that original ffplay from my build can't play some video files, but it didn't write any message to console. Then I noticed that ffmpeg also don't write any usage message when I run it without params. But it works. If I run it from terminal it's like running asynchronously ! The terminal just shows next row. I mean it asks for a next command. But the ffmpeg process is visible in task manager and it writes the output video file what I had requested !

  I created following souce file. I have modified the Makefile. So it have built the exe-file works just the same way. I have no idea how it can be.

  #include 
  
  #include "cmdutils.h"
  
  
  
  const char program_name[] = "hello";
  
  const int program_birth_year = 2013;
  
  
  
  void show_help_default(const char *opt, const char *arg)
  
  {
  
      printf("zxcvbnm\n");
  
  }
  
  
  
  int main(int argc, char **argv)
  
  {
  
      printf("1234567890\n");
  
      return 0;
  
  }

  I want to prevent this behavior.

  I want to make printf working in traditional manner.

  How I build FFmpeg :

  PKG_CONFIG_PATH=/home/developer/workspace/MinGW32fs/lib/pkgconfig/ \
  
  SDL_CONFIG=/home/developer/workspace/MinGW32fs/bin/sdl-config \
  
  ./configure \
  
    --prefix=/home/developer/workspace/MinGW32fs \
  
    --extra-ldflags="-L/home/developer/workspace/MinGW32fs/lib" \
  
    --extra-cflags="-I/home/developer/workspace/MinGW32fs/include" \
  
    --arch=x86 --target-os=mingw32 --cross-prefix=i686-w64-mingw32-  \
  
    --pkg-config=pkg-config   --enable-libtheora --enable-libvorbis --enable-libvpx \
  
    --enable-outdev=sdl --enable-shared --disable-static \
  
    --disable-doc --disable-manpages --disable-podpages
  
  
  
  make

• fftools/ffprobe : show closed caption info in the stream dump

  29 avril 2020, par vectronic

  fftools/ffprobe : show closed caption info in the stream dump
  Signed-off-by : vectronic <hello.vectronic@gmail.com>
  
  Signed-off-by : Marton Balint <cus@passwd.hu>
  

  • [DH] doc/ffprobe.xsd
  • [DH] fftools/ffprobe.c
  • [DH] tests/ref/fate/concat-demuxer-extended-lavf-mxf
  • [DH] tests/ref/fate/concat-demuxer-extended-lavf-mxf_d10
  • [DH] tests/ref/fate/concat-demuxer-simple1-lavf-mxf
  • [DH] tests/ref/fate/concat-demuxer-simple1-lavf-mxf_d10
  • [DH] tests/ref/fate/concat-demuxer-simple2-lavf-ts
  • [DH] tests/ref/fate/ffprobe_compact
  • [DH] tests/ref/fate/ffprobe_csv
  • [DH] tests/ref/fate/ffprobe_default
  • [DH] tests/ref/fate/ffprobe_flat
  • [DH] tests/ref/fate/ffprobe_ini
  • [DH] tests/ref/fate/ffprobe_json
  • [DH] tests/ref/fate/ffprobe_xml
  • [DH] tests/ref/fate/hapqa-extract-nosnappy-to-hapalphaonly-mov
  • [DH] tests/ref/fate/hapqa-extract-nosnappy-to-hapq-mov
  • [DH] tests/ref/fate/mov-zombie
  • [DH] tests/ref/fate/mxf-probe-d10
  • [DH] tests/ref/fate/mxf-probe-dnxhd
  • [DH] tests/ref/fate/mxf-probe-dv25

• How to show Images from a video as preview for playlist

  1er février 2017, par Guruprasad Rao

  You guys Have seen Youtube right. There while you are watching a video, You will also get related videos preview alongwith link. So how we can get it from video itself.. Is it possible to do so.. I am able to get the url from database and display it.. and when the link is clicked it will be played in a jquery player.. So before that a preview of that or you can say playlist of that will be available for user.

  I have updated my code with a link I found.. But still I am not able to get the Image from Video.. Is there anything wrong in my code.. Please correct me if I am wrong..

  Below is my front end code :

  <form runat="server">
  
      <div runat="server" style="height:100%;width:100%">
  
          <div>Latest Videos</div>
  
  
  
      </div>
  
  
  
      </form>

  and I am adding all my video links from backend on page load as shown below :

     try
  
      {
  
          con.Open();
  
          com = new SqlCommand("Select videourl, videoname from video order by [vid] desc",con);
  
          DbDataReader dr = com.ExecuteReader();
  
          DataTable dt = new DataTable();
  
  
  
          if (dr.HasRows)
  
          {
  
  
  
              int i = 0;
  
              dt.Load(dr);
  
              int rows = dt.Rows.Count;
  
  
  
  
  
              for (i = 0; i < rows; i++)
  
              {
  
                  HtmlGenericControl d = new HtmlGenericControl("div");
  
                  HtmlGenericControl s = new HtmlGenericControl("span");
  
                  string[] link = new string[rows];
  
                  string[] name = new string[rows];                    
  
  
  
                  d.Attributes.Add("class", "plst");
  
                  s.Attributes.Add("class", "text");
  
                  link[i] = dt.Rows[i]["videourl"].ToString();
  
                  name[i] = dt.Rows[i]["videoname"].ToString();
  
                  string videothumb = link[i];
  
                  string svthto="**Path to save Image**";
  
                  string imgpath=GetVideoThumbnail(videothumb, svthto, 30);
  
  
  
                  sb.Append("<a i="i" href=" + " class=" + ">" + name[i] + "</a>");
  
                  s.InnerHtml = sb.ToString();
  
                  d.Controls.Add(s);
  
                  examples.Controls.Add(d);
  
                  sb.Clear();
  
  
  
  
  
              }
  
          }
  
  
  
  
  
      }
  
      catch(Exception ex)
  
      {
  
          ex.Message.ToString();
  
      }
  
  
  
  public string GetVideoThumbnail(string path, string saveThumbnailTo, int seconds)
  
  {
  
      string parameters = string.Format("-ss {0} -i {1} -f image2 -vframes 1 -y {2}", seconds, path, saveThumbnailTo);
  
      string pathToConvertor = "C:\\Program Files\\ffmpeg\\ffmpeg.exe";
  
      var processInfo = new ProcessStartInfo();
  
      processInfo.FileName = pathToConvertor;
  
      processInfo.Arguments = parameters;
  
      processInfo.CreateNoWindow = true;
  
      processInfo.UseShellExecute = false;
  
  
  
      File.Delete(saveThumbnailTo);
  
  
  
      using (var process = new Process())
  
      {
  
          process.StartInfo = processInfo;
  
          process.Start();
  
          process.WaitForExit();
  
      }
  
  
  
      if (File.Exists(saveThumbnailTo))
  
          return saveThumbnailTo;
  
      else
  
          return "File not Found";
  
  }

  and here is the image of what I am getting until now :
  

  Please note : I am not concentrating on you tube videos. I am questioning regarding the videos which I store in server side folder. So if there is any jquery technique or any sort of technique to do this then please let me know. :)