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• FFmpeg : convert any video to square 1:1 video with blurred side bars

  16 novembre 2019, par L0Lock

  Very similar to this topic :

  FFmpeg : How to convert vertical video with black sides, to video 16:9, with blurred background sides

  I’m trying to make myself a bat file that will automate my Instagram video creations.
  The idea is that I make videos of variable resolutions and variable aspect ratios. I don’t want to spend time on each video just to make it fit.

  So here’s my goal with that bat file :

  • Must output a square video
  • The original video must keep its original aspect ratio no matter what it is
  • The blank spaces filling the voids from the original video and the square aspect ratio must be filled with a squared & blurred version of the original video
  • Optionally, let me choose the output resolution (for encoding time saving and because AFAIK Instagram displays only 600px² videos(?))

  So far I managed to get results that work only for either vertical or horizontal videos but not both. Or end up with the original video cropped, which I don’t want : I frame my subjects as I want and I don’t want to frame them forethinking the additional cropping a FFmpeg encoding could do.

  This is my script so far :

  echo off
  
  :again
  
  
  
  ffmpeg.exe -i "%~1" ^
  
      -c:v libx264 -crf 23 -filter_complex "[0:v]scale=600*2:600*2,boxblur=luma_radius=min(h\,w)/20:luma_power=1:chroma_radius=min(cw\,ch)/20:chroma_power=1[bg];[0:v]scale=600:-1[ov];[bg][ov]overlay=(W-w)/2:(H-h)/2,crop=w=600:h=600"  -profile:v baseline -level 3.0 -pix_fmt yuv420p -preset faster -tune fastdecode ^
  
      -c:a aac -ac 2 -b:a 128k ^
  
      -movflags faststart ^
  
      "%~p1%~n1_Instagramized.mp4" -y
  
  
  
  if NOT ["%errorlevel%"]==["0"] pause
  
  shift
  
  if "%~1" == "" goto:eof
  
  goto:again

  EDIT :

  Thanks to @Gyan I got the solution. I added my input as well :

  Since I might reuse that bat file often and might want to change the output resolution, It’s not handy to have the resolution hardcoded in six different places.
  So I create a variable called SquareSize which is called using %SquareSize% (instead of the hardcoded resolution) and set at the begining of the file using set SquareSize=XXX. So now I can change easily when I need just by opening it and editing the XXX.

  echo off
  
  :again
  
  
  
  set SquareSize=600
  
  
  
  ffmpeg.exe -i "%~1" ^
  
      -c:v libx264 -crf 23 ^
  
      -filter_complex "[0:v]split=2[blur][vid];[blur]scale=%SquareSize%:%SquareSize%:force_original_aspect_ratio=increase,crop=%SquareSize%:%SquareSize%,boxblur=luma_radius=min(h\,w)/20:luma_power=1:chroma_radius=min(cw\,ch)/20:chroma_power=1[bg];[vid]scale=%SquareSize%:%SquareSize%:force_original_aspect_ratio=decrease[ov];[bg][ov]overlay=(W-w)/2:(H-h)/2" ^
  
      -profile:v baseline -level 3.0 -pix_fmt yuv420p -preset faster -tune fastdecode ^
  
      -c:a aac -ac 2 -b:a 128k ^
  
      -movflags faststart ^
  
      "%~p1%~n1_Instagramized.mp4" -y
  
  
  
  if NOT ["%errorlevel%"]==["0"] pause
  
  shift
  
  if "%~1" == "" goto:eof
  
  goto:again

• simple hls server - Streaming from local NAS

  18 juillet 2020, par Neil Bernard

  I'm using FFMPEG to stream to a synology NAS, I cant open the files in VLC over the network. I assume its some sort of CIFS/SMB thing (edit : I think its actually the paths in the .m38u file). I don't really want to setup a nginx server. This is for local use.

  


  Any thoughts on a lightweight solution ?

  


  Cheers in advance

  


  Neil

  


• Recording transport stream to file in ffmpeg

  9 juillet 2020, par Neil Bernard

  I'm streaming a dvb-t mux and I want to dump it to file using ffmpeg on another PC.

  


  Here is the command :

  


  ffmpeg -i rtp ://192.168.1.93:20000 -acodec copy -vcodec copy d34_tw.ts

  


  For some reason though its only saving 1 video and 1 audio random pid ? not the whole TS ?

  


  Thoughts ?

  


  Neil