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• FFMEG Watermark over video c#

  21 décembre 2018, par Lắc Si Lê

  public void AddWaterMark(string orginalVideoPath, string waterMarkPath, string outPutVideoPath) { string ffmpeg = System.AppDomain.CurrentDomain.BaseDirectory + @"\Tools\ffmpeg.exe";
  
  
  
      System.Diagnostics.Process ffmpegProcess = new System.Diagnostics.Process();
  
  
  
      System.Diagnostics.ProcessStartInfo startInfo = new System.Diagnostics.ProcessStartInfo(ffmpeg);
  
  
  
      startInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Normal;
  
  
  
      startInfo.Arguments = " -i " + orginalVideoPath + " -i " + waterMarkPath + " -filter_complex \"overlay=10:10\" " + outPutVideoPath;
  
      try
  
      {
  
          System.Diagnostics.Process.Start(startInfo).WaitForExit();
  
      }
  
      catch (Exception err)
  
      {
  
          MessageBox.Show(err.Message);
  
      }
  
  }

  Hello you guys, My code is used for making fuction of watermark over video. But It was problematic that the code worked without output....Could you guys figure me out ? (I wonder do we have to change our URL file into their correct form ). I used OpenFIleDialog for getting these files URL, like this

  FolderBrowserDialog folderBrowseDialog = new FolderBrowserDialog();
  
          if (folderBrowseDialog.ShowDialog() == DialogResult.OK)
  
          {
  
              outPutWM = folderBrowseDialog.SelectedPath;
  
          }

  Thank you guys a bunch !

• How to bash-script or simplify ffmpeg commands for resizing the watermark, adding it to the video and adding subtitle.ass to the video ?

  25 décembre 2018, par Wai Gyi

  I would like to create hard-subbed video with watermark by using ffmpeg. And I’d like to know how to combine and simplify multiple commands or how to create a bash-script for this purpose.

  I’ve tried searching in stackflow and tested some commands but they didn’t work. Here are the comands I’m using.

  1. To detect video width & height :

     ffprobe -v quiet -show_entries stream=width,height -of default=noprint_wrappers=1 video_in.mp4

  2. To resize the watermark image : (video width = 1280)

     ffmpeg -i watermark.png -y -v quiet -vf scale=1280*0.15:-1 watermark_scaled.png

  3. To add watermark to the video :

     ffmpeg -i video_in.mp4 -i watermark_scaled.png -filter_complex "overlay=W-w-5:5" video_marked.mp4

  4. To add .ass subtitle to the video : (it need to be ’.ass’)

     ffmpeg -i video_marked.mp4 -vf ass=subtitle.ass video_final.mp4

• Why x264 takes 100% CPU usage when watching video ? [on hold]

  26 décembre 2018, par megapro17

  I want to watch some video with was encoded using x264, but it takes won’t playing and just lags. All other videos play smooth and being accelerated by GPU. I tried multiple players, all was the same. Is there anything possible than transcoding video into a normal codec ?

  Video
  
  ID                                       : 1
  
  Format                                   : AVC
  
  Format/Info                              : Advanced Video Codec
  
  Format profile                           : High 4:4:4 Predictive@L5.2
  
  Format settings                          : CABAC / 4 Ref Frames
  
  Format settings, CABAC                   : Yes
  
  Format settings, RefFrames               : 4 frames
  
  Codec ID                                 : V_MPEG4/ISO/AVC
  
  Width                                    : 2 560 pixels
  
  Height                                   : 1 440 pixels
  
  Display aspect ratio                     : 16:9
  
  Frame rate mode                          : Variable
  
  Chroma subsampling                       : 4:4:4
  
  Bit depth                                : 8 bits
  
  Scan type                                : Progressive
  
  Writing library                          : x264 core 155 r2901 7d0ff22
  
  Encoding settings                        : cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x1:0x111 / me=hex / subme=7 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=0 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=4 / threads=18 / lookahead_threads=3 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=crf / mbtree=1 / crf=16.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / vbv_maxrate=80000 / vbv_bufsize=20000 / crf_max=0.0 / nal_hrd=none / filler=0 / ip_ratio=1.40 / aq=1:1.00
  
  Default                                  : Yes
  
  Forced                                   : No
  
  Statistics Tags Issue                    : mkvmerge v20.0.0 ('I Am The Sun') 64-bit 2018-07-05 12:19:16 / Lavf58.9.100 
  
  FromStats_BitRate                        : 47874684
  
  FromStats_Duration                       : 00:52:03.583000000
  
  FromStats_FrameCount                     : 374827
  
  FromStats_StreamSize                     : 18692431235