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• How to extract Images from MP4 video on upload - FFMPEG

  11 février 2015, par michael hanon

  I am putting together a training site for my company and we need to extract an image from each mp4 video we upload. I have searched lots and decided to try FFMPEG.

  Here is what I have so far. I’m not getting errors, but no image in the specified folder.

  Any help would be appreciated.

             string inputfile = Server.MapPath("/Report/TrainingLibrary/Material/Videos/RMSIMAILSignature.mp4");
           //string withouttext;
           string thumbpath;
           string thumbname;
           string thumbargs;
           //string thumbre;
          thumbpath = AppDomain.CurrentDomain.BaseDirectory + "Reports\\ TrainingLibrary\\Material\\Videos\\";
           thumbname = thumbpath + "Image" + "%d" + ".jpg";
           thumbargs = "-i " + inputfile + " -vframes 1 -ss 00:00:07 -s 150x150 " + thumbname;
           Process thumbproc = new Process();
           thumbproc = new Process();
           thumbproc.StartInfo.FileName = "C:\\FFMPEG\\Bin\\ffmpeg.exe";
           thumbproc.StartInfo.Arguments = thumbargs;
           thumbproc.StartInfo.UseShellExecute = false;
           thumbproc.StartInfo.CreateNoWindow = false;
           thumbproc.StartInfo.RedirectStandardOutput = false;
           try
           {
               thumbproc.Start();
           }
           catch (Exception ex)
           {
               Response.Write(ex.Message);
           }
           thumbproc.WaitForExit();
           thumbproc.Close();

• Timecode Burn-In from Source TC

  16 janvier 2024, par filmeschneider

  I'm trying to create a TC Burn-In that correctly displays the source video's TC.

  


  My current FFMPEG filter line is :

  


  -filter_complex "[0:1][0:2] amerge" -preset ultrafast -vf scale=960:540:in_range=tv:out_range=pc,"drawtext=\timecode='00\:00\:00\:00':timecode_rate=25:x=(w-tw)/2:y=h-(2*lh):fontcolor=white@1:fontsize=30:box=1:boxcolor=black@0.6" -c:v libx264 -pix_fmt yuv420p -crf 27 -c:a aac -ar 48000 -b:a 128k

  


  This of course starts the Burn-In at 00:00:00:00, but I'd rather insert the file's TC (in this case, it starts at 10:00:00:00) — data taken from MediaInfo :

  


  Other #1
ID                                       : 1-Material
Type                                     : Time code
Format                                   : MXF TC
Frame rate                               : 25.000 FPS
Time code of first frame                 : 10:00:00:00
Time code of last frame                  : 10:02:34:20
Time code settings                       : Material Package
Time code, stripped                      : Yes
Title                                    : Timecode

Other #2
ID                                       : 0-Source
Type                                     : Time code
Format                                   : MXF TC
Frame rate                               : 25.000 FPS
Time code of first frame                 : 10:00:00:00
Time code of last frame                  : 10:02:34:20
Time code settings                       : Source Package
Time code, stripped                      : Yes

Other #3
Type                                     : Time code
Format                                   : SMPTE TC
Muxing mode                              : SDTI
Frame rate                               : 25.000 FPS
Time code of first frame                 : 10:00:00:00


  


  I have not found a way to make FFMPEG read the TC and use it for the Burn-In. Do any of you guys know how to accomplish this ?

  


  Thanks
Christian

  


• FFMPEG/MP4BOX Muxing .mp4 with .h262, .acc x2, and srt

  4 mai 2015, par can

  I’m going to attempt to re-ask this question.

  What I am wanting to do, is create one new mp4 file, which will include, one video file, two audio files and one subtitle file. I am wanting to create a mp4 file that I can playback on my iOS devices and computers.
  The files are as followed :

  • video.h264 23.976 fps
  • audioen.aac 44.1 KHz, 2, English
  • audiojp.aac 48.0 KHz, 5.1, Japanese
  • sub.srt

  Now this srt has been converted from a mks subtitle file from a Matroska file.
  I would like the English track to play by default, the Japanese track to be an option and the subtitle file to be another option.

  I am having a very hard time trying to work both, mp4box and ffmpeg to create this one file, can somebody please help me with the command.