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• ffmpeg - prop flicker removal works but ffmpeg insists on changing framerate [closed]

  28 avril 2023, par Mutley Eugenius

  I have been researching how to use FFmpeg to do some fantastic wizardry on my cockpit videos to remove the dramatically distracting propeller, but after many hours now I cannot seem to find a way to get the program to stop stripping more than half the frames. The source video file is 1920 x 1080 @ 60fps and I believe I have my offset right (1/60= 0.0166) but the output video is always coming out at 25 fps. Can't see what element in the code is telling it to do that, or how to change it.

  


  Here's my file :

  


  https://drive.google.com/file/d/1VPttH4PHgUr0uzmsbl4Bcyg5_gAixblA/view?usp=sharing

  


  Here's my code :

  


  ffmpeg -i G:\PropFlicker.mp4 -itsoffset 0.01666 -i G:\PropFlicker.mp4 -filter_complex color=0x202020:s=1920x1080:d=24[mask];[mask][0][1]maskedmax=[out] -map [out] -crf 10 G:\PropNoFlicker.mp4


  


  I have tried adding -r 60 which gives me a 60 fps output file, but the video is still being processed at 25 and it just adds in duplicated frames after processing to pad it out to 60. The rendering shows more dropped frames than rendered frames by about a 3 to 2 ratio which matches frame drops from 60 to 25. I lose my shot fluidity and I get flickery artifacts

  


  What am I missing to get the flicker removal processing done at 60 fps and the output file rendered at 60 fps with the original smoothness ?

  


  I'm also not sure what the :d=24 is doing. I tried d=60, but it made no difference.

  


  I copied original code that I found in this link :

  


  text

  


• Merge commit ’04763c6f87690b31cfcd0d324cf36a451531dcd0’

  18 mars 2017, par Clément Bœsch

  Merge commit ’04763c6f87690b31cfcd0d324cf36a451531dcd0’
  * commit ’04763c6f87690b31cfcd0d324cf36a451531dcd0’ :
  
    h264_direct : use the reference mask from the actual reference
  This commit is a noop, see d8151a7e944aea52d167571badc247c8d9972847
  Merged-by : Clément Bœsch <u@pkh.me>
  

• Powershell Job Memory Consumption Issue

  14 juillet 2016, par Matt Wall

  I’ve been struggling with this for a week now and have exhausted all the methods and options I have found online. I am hoping someone here will be able to help me out with this.

  I am using powershell to start 8 jobs, each job running FFmpeg to stream a 7 minute file to a remote RTMP server. This is pulling from a file on the disk and each job uses a different file. The command is in a do while loop so that it is constantly restreaming.

  This is causing the shell I launched the jobs from to accumulate a massive amount of memory, consuming all that it can. In 24 hours it consumed 30 of the 32 GB of my server.

  Here is my launch code, any help would be appreciated.

  start-job -Name v6 -scriptblock {
  
  do { $d = $true; $f = Invoke-Expression -Command "ffmpeg -re -i `"C:\Shares\Matthew\180p_3000k.mp4`" -vcodec copy -acodec copy -f flv -y rtmp://<ip>/<appname>/<streamname>"; $f = $null }
  
  while ($d = $true)
  
  </streamname></appname></ip>

  }

  I’ve tried to receive the jobs and pipe it to out-null, I’ve tried setting $f to $null before starting the do while loop, and some other things I found online but to no avail. Thanks everyone for your time !