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• ffmpeg c# Windows forms

  7 février 2017, par TODO

  I’m fairly new to windows forms and ffmpeg (unity background).

  I’m trying to get a button click on a windows form to take a png sequence, and convert it to an mp4 with ffmpeg.

          Process ffmpeg = new Process();
  
  
  
          ffmpeg.StartInfo.FileName = Path.Combine(Environment.CurrentDirectory, @"c:\test\ffmpeg.exe");
  
  
  
          ffmpeg.StartInfo.Arguments = "-framerate 25 -i 0001_IMG%03d.JPG -c:v libx264 -preset ultrafast -crf 0 -vf scale=-2:1080 -pix_fmt yuv420p temp.mp4";
  
  
  
          ffmpeg.Start();

  I have no problem running the same ffmpeg command from cmd, or from within a c++ console application I experimented with Using system("")

  I’ve been stuck on this for a little longer than I care to admit, and have tried searching for answers, but am still learning as i go.

  Any help would be much appreciated.

• FFMPEG Combine multiple commands into one script

  16 février 2017, par ObeeWnn

  I need some help combining ffmpeg commands into a python or bash script :

  \Download
  
  Youtube-dl URL
  
  
  
  \Concatenate videos
  
  
  
  WD = "C:\"
  
  import glob
  
  files = glob.glob ('*.mp4')
  
  with open ('output.txt', 'w') as in_files:
  
      for eachfile in files: in_files.write('file \''+eachfile+'\'\n')
  
  
  
  ffmpeg -y -f concat -i output.txt -c copy input.mp4
  
  
  
  \Encode
  
  ffmpeg -y -threads 16 -i input.mp4 -c:a libfdk_aac -vbr 4 -c:v libx264 intermediate1.ts
  
  ffmpeg -y -threads 16 -i endscreen720.mp4 -c:a libfdk_aac -vbr 4 -c:v libx264 intermediate2.ts
  
  ffmpeg -y -i "concat:intermediate1.ts|intermediate2.ts" -c copy -bsf:a aac_adtstoasc tmp.mp4
  
  ffmpeg -y -i tmp.mp4 -itsoffset 00:00:20 -i lt1sub.avi -filter_complex overlay tmp1.mp4
  
  ffmpeg -y -i tmp1.mp4 -i intro.avi -filter_complex overlay tmp1a.mp4
  
  ffmpeg -y -i tmp1a.mp4 -i watermarkfile720.png -filter_complex "[0:v]drawtext=enable='between(n,30,116)' : 'fontfile=/Windows/Fonts/arial.ttf':text='TEXTGOESHERE':fontcolor=white:fontsize=50:x=150:y=(300)+th[text]; [text][1:v]overlay[filtered]" -map "[filtered]" -map 0:a -codec:v libx264 -codec:a copy tmp2.mp4
  
  ffmpeg -y -i tmp2.mp4 -r 60 -vf scale=1920:1080 output.mp4
  
  
  
  
  
  \Create Thumbnail
  
  ffmpeg -y -i tmp1.mp4 -vf drawtext="fontfile=/Windows/Fonts/arial.ttf': text='':fontcolor=white@1.0:fontsize=120:y=0:x=100" -ss 00:00:12 -vframes 1 out.png
  
  
  
  set /p input= Video #
  
  
  
  ffmpeg -y -i out.png  -i tnOverlay.png -filter_complex overlay,drawtext="fontfile=/Windows/Fonts/arial.ttf': text="%input%":fontcolor=white@1.0:fontsize=120:y=25:x=1190" out.png

  This is to download videos, place an intro video in the beginning, draw text over intro, concatenate the videos, apply watermark throughout video, apply outro, create thumbnail, etc.
  My FFmpeg compile :

  ffmpeg version N-83522-g6a37abc59a Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 6.3.0 (Rev1, Built by MSYS2 project)
  
    configuration:  --enable-avisynth --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-cuda --enable-cuvid --enable-schannel --enable-sdl2 --enable-decklink --enable-fontconfig --enable-frei0r --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libilbc --enable-libmfx --enable-libmodplug --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libwavpack --enable-libwebp --enable-libxavs --enable-libxvid --enable-libzimg --enable-openssl --enable-libsnappy --enable-gpl --enable-opencl --enable-opengl --enable-libcdio --enable-libfdk-aac --enable-libkvazaar --enable-librubberband --enable-libssh --enable-libtesseract --enable-libzvbi --enable-chromaprint --enable-libopenh264 --enable-libopenmpt --enable-netcdf --disable-w32threads --enable-version3 --enable-nonfree --enable-filter=frei0r --disable-debug
  
    libavutil      55. 47.100 / 55. 47.100
  
    libavcodec     57. 80.100 / 57. 80.100
  
    libavformat    57. 66.102 / 57. 66.102
  
    libavdevice    57.  2.100 / 57.  2.100
  
    libavfilter     6. 73.100 /  6. 73.100
  
    libswscale      4.  3.101 /  4.  3.101
  
    libswresample   2.  4.100 /  2.  4.100
  
    libpostproc    54.  2.100 / 54.  2.100

  Would like to use libfdk-aac and x264, or highest quality possible. The video source will be at 720p60fps and will be rendered to 1080p60fps.

• FFMPEG Windows Batch - Recursive Convert based and settings based on Frame Height

  3 avril 2017, par Vahid Jamali

  So I’m trying to make a batch file to use FFMPEG to convert around 1000 MP4 video files.

  I want to recursively go through these folders, possibly use ffprobe to discover the frame height, and then based on the frame height options (360, 480, 720, or 1080 frame height) give them individually different ffmpeg commands.

  I’ve been reading up on various approaches to this just as far as batch processing goes.

  So far I’m at this stage :

  for %%a in ("*.*") do C:\ffinstall\local64\bin-video\ffmpeg -i "%%a"  -c:v libx264 -crf 18 -preset veryslow -tune film -refs 8 -bf 6 -aq-mode 2 -filter_complex "[0:v][1:v]overlay=30:main_h-overlay_h-30,subtitles='D:\add.ass'" -c:a copy "encoded\%%~na.mp4"

  pause

  Code to discover the frame height :

  ffprobe -v error -show_entries stream=height -of default=noprint_wrappers=1 inputfile.mp4

  Trying to figure out conditionals and how their syntax is. Also I’m getting a Unable to parse option value "add.ass" as image size error. Which I believe is due to not being to see the subtitle file.

  Any suggestions on where I can start ? Thanks for any help.