Recherche avancée

Sur d’autres sites (9037)

• Revision 1e82bdec92 : twopass_encoder : Flush encoder. Change-Id : Ib04a545b43f3a36c6df7eaf3ed2d802cf41

  26 août 2014, par Dmitry Kovalev

  Changed Paths :
   Modify /examples/twopass_encoder.c

  
  
  twopass_encoder : Flush encoder.

  Change-Id : Ib04a545b43f3a36c6df7eaf3ed2d802cf41119bb

• Enreco Video Rotation in Asp.Net Virtual Machine is not completing

  24 juillet 2014, par Sreeraj

  I am developing an ASP.NET Web Api in which I need to concatenate some video clips and rotate them. I could achieve the same when I tried in my local system. When I deployed the same project to an Azure Virtual Machine I am not getting response. I am pretty sure that there isn’t any issue till video concatenation because I could see the concatenated video in the expected folder. Here is the code snippet.

   var ffMpeg = new NReco.VideoConverter.FFMpegConverter();
  
              NReco.VideoConverter.ConcatSettings set = new NReco.VideoConverter.ConcatSettings();
  
              ffMpeg.GetVideoThumbnail(_fileNames[0], imageRootPath + tobename + ".jpg");
  
    if (_fileNames.Count() > 1)
  
              {
  
                  ffMpeg.ConcatMedia(_fileNames, videoRootPath + tobename + "_r.mp4", NReco.VideoConverter.Format.mp4, set);
  
  
  
                  string path = HttpContext.Current.Server.MapPath("~\\bin\\");
  
                  System.Diagnostics.Process ffmpeg = new System.Diagnostics.Process();
  
                  ffmpeg.StartInfo.FileName = path + "\\" + "ffmpeg.exe";
  
                  ffmpeg.StartInfo.Arguments = "-i " + videoRootPath + tobename + "_r.mp4" + " -c copy -metadata:s:v:0 rotate=90 " + videoRootPath + tobename + ".mp4";
  
                  ffmpeg.Start();
  
                  ffmpeg.WaitForExit();
  
              }

  ffmpeg.ConcateMedia is working fine. I can’t figure out why the External process that I have invoked does not complete. The same piece is working fine in my local Visual Studio.

  Thank you in advance

• FFMPEG Scene Detection - Trim Blank Background from Video at the Start and End

  10 juin 2014, par user3521682

  Summary :
  Need to programatically trim video when scene is not changing at the beginning & end.

  Example video : http://www.filehosting.co.nz/finished3.mp4
  (Quality is much higher in the real video)

  Background :

  Large number of videos for online store, each video begins with a blank background, then the model walks on (at a random time, few seconds), and then walks off after a random time (around 15 seconds). The end of the video is trimmed seemingly random ; could be up to 15 seconds of ’nothing’ at the end of the video.

  The camera does not move. There is no sound on the videos.
  The videos come from a camera in MOV format, sideways.

  I already have FFMPEG converting from MOV to MP4, rotating the video, adding an audio-track, and trimming the audio at the end of the video.

  Research :
  I understand that I should probably re-encode video with a very high (?) tolerance for i-frames (so that only two are made per video) and then export the times to a text file, and use the text file to cut the video (probably parse it in BASH and use that to build the FFMPEG commands).

  Does anyone have any idea how I could generate just two key-frames per video ?

  Example video : http://www.filehosting.co.nz/finished3.mp4
  (Quality is much higher in the real video)