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• Using Hazel to execute ffmpeg (installed via Homebrew) script to convert video to .gif

  9 août 2018, par benbennybenben

  What I want to do is set Hazel to watch a folder for a new video that I create and then when matched, an embedded FFMPEG script converts the video into a gif.

  I have the matching criteria done,
  Hazel matching rules

  I have the ffmpeg recipe done,

  ffmpeg -ss 5.0 -t 2.5 -i $1 -r 15 -filter_complex "[0:v] fps=15, scale=500:-1, split [a][b];[a] palettegen [p]; [b][p] paletteuse" $1.gif

  But when I put the ffmpeg recipe in the "Embedded Script" dialogue box, I get an error when the match runs.

  2018-08-09 18:43:15.818 hazelworker[68549] [Error] Shell script failed: Error processing shell script on file /Users/bengregory/Scripts/khgfygfjhbvmnb.mp4.
  
  2018-08-09 18:43:15.818 hazelworker[68549] Shellscript exited with non-successful status code: -900

  I’m not sure if it’s relevant to mention that I’ve install ffmpeg via homebrew

  This is what the embedded shell script looks like
  ffmpeg embedded script

  I’ve been trying to get this to work for weeks and so far not found anything that helps. I read through this article on how to use handbrakeCLI, but no luck
  Hazel and HandbrakeCLI tutorial

  Any help would be greatly received ! Cheers

• FFMPEG : Position images in video when creating slide show

  29 décembre 2015, par Jimmy

  I’m using FFMPEG shell utility in an Android app to convert users pictures to video, here’s an example command :

  cat *.jpg | ffmpeg -f image2pipe -r 10  -vcodec mjpeg -i - -vcodec libx264 -s 1280x720 -preset ultrafast slideshow.mp4 

  I used to crop images when the user import it in the app but now I would like to allow the user to reposition the image later, here’s an example :

  

  So the user could drag or zoom the image to position it in the clear area (video ratio).

  So using the ffmpeg shell command can I specify the image coordinate for each image and position the image in the video.

• ffmpeg : fix implementation of updated input start time

  21 octobre 2022, par Gyan Doshi

  ffmpeg : fix implementation of updated input start time
  The current adjustment of input start times just adjusts the tsoffset.
  
  And it does so, by resetting the tsoffset to nullify the new start time.
  
  This leads to breakage of -copyts, ignoring of input_ts_offset, breaking
  
  of -isync as well as breaking wrap correction.
  Fixed by taking cognizance of these parameters, and by correcting start times
  
  just before sync offsets are applied.
  

  • [DH] fftools/ffmpeg.c
  • [DH] fftools/ffmpeg.h
  • [DH] fftools/ffmpeg_demux.c
  • [DH] fftools/ffmpeg_opt.c