Recherche avancée

Sur d’autres sites (12407)

• ffmpeg remove part of video, crop, rotate video [duplicate]

  2 novembre 2017, par 1234567

  This question already has an answer here :

  • ffmpeg remove multiple segments from a video rotate and crop video
    
    1 answer
    

  ffmpeg remove part of video, crop, rotate video

  this can be explained with this images
  orginal video

  crop and rotated video

  

  the time details

  original video from which part starting from 10 sec to 16 sec and 20 sec to 26 sec is to be removed

  

  result video

  

• FFprobe (part of FFmpeg) command output to variable in a Windows Batch File [duplicate]

  12 décembre 2017, par Bazza DownUnder

  This question already has an answer here :

  • batch store ffprobe as variable
    
    1 answer
    

  I want to capture the Audio codec in a variable when I execute an FFprobe command within a batch file.

  The FFprobe command when executed on its own :

  ffprobe "myvideo.mkv" -v error -select_streams a:0 -show_entries stream=codec_name -of default=noprint_wrappers=1:nokey=1

  Results in :

  aac

  I want to check if the audio codec of the video is aac. If so then no need to convert the videos audio.

  This is the bat file :

  @echo off
  
  
  
  for %%f in (*.%1) do (
  
  
  
      (Echo "%%f" | FIND /I ".srt" 1>NUL) || (
  
  
  
  
  
          For /F %%I in ('ffprobe "%%~nf.%1" -v error -select_streams a:0 -show_entries stream=codec_name -of default=noprint_wrappers=1:nokey=1') Do Set StrCodecs=%%I
  
  
  
          echo Audio Codecs = %StrCodecs%
  
  
  
          echo Creating "New\%%~nf.%1"
  
          ffmpeg -i "%%~nf.%1" -loglevel panic -movflags +faststart -c:v copy -c:a aac -b:a 384k "New\%%~nf.%1"
  
          echo Done with "New\%%~nf.%1"
  
      )
  
  )

  The error I get with above is :

  Argument ’codec_name’ provided as input filename, but ’myvideo.mkv’
  was already specified.

  Even if I remove the single quotes, those in the brackets just after in, and have it look like this :

  For /F %%I in (ffprobe "%%~nf.%1" -v error -select_streams a:0 
  
  -show_entries stream=codec_name -of default=noprint_wrappers=1:nokey=1) 
  
  Do Set StrCodecs=%%I

  The result is :

  The system cannot find the file ffprobe.

  Audio Codecs = Creating

  "New\myvideo.mkv"

  Everything else works in the bat file.

• I need to cut MP4 videos. A part at the beginning and a part at the end in a batch fashion

  26 janvier 2020, par Eric Lalonde

  I have several training videos. All .MP4s.

  I want to remove 3.5 seconds from the beginning and 4.5 seconds from the end of the entire folder of them...

  I know of ffmpeg and ffprobe - but my knowledge and mastery of them both is limited.

  Can someone provide a script for this, or, at least a program that will make this easy for me ? I keep searching and I reach dead-ends everytime or scripts that do not work.

  I am also open to using Linux/Windows but not mac.

  edit : First part completed. Will keep on studying this command further in order to learn batch ; Here’s the easy part, how to batch trim an entire folder of MP4s :

  for %%a in ("*.mp4") do ffmpeg -i "%%a" -ss 00:00:03.5 -vcodec copy -acodec copy "newfiles\%%~na.mp4"
  
  
  
  pause