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• 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

• Revision 43cec44bbf : Remove 'local' variables in rtcd.sh These aren't required to be supported by sh

  21 février 2013, par John Koleszar

  Changed Paths : Modify /build/make/rtcd.sh Remove 'local' variables in rtcd.sh These aren't required to be supported by sh. Change-Id : I54d641a2377531e0b320676d29d4ecdeee82288a

• add a part of an audio file to a certain part of video , in loop using FFmpeg

  5 octobre 2017, par 1234567

  I have two files one Audio and one video file,

  The audio file is 1 min long,

  and the video file is 2 min 30 sec long,

  I want to add a part of audio, with loop not the whole audio file to the video , using FFmpeg

  say from 15 sec to 33 sec of the audio file

  to a part of video say from 45 sec to 1min 30 sec

  this code has worked with a single file which is 18 sec long , which is added to a certain part of video with a loop

  "-y","-i",j,
  
                          "-filter_complex",
  
                          "amovie="+audio+":loop=999,asetpts=N/SR/TB," +
  
                                  "atrim=0:45,adelay=45000|45000,aformat=sample_fmts=fltp:sample_rates=44100:channel_layouts=stereo,volume=1.5[a1];" +
  
                                  "[0:a]aformat=sample_fmts=fltp:sample_rates=44100:channel_layouts=stereo,volume=2.0[a2];" +
  
                                  " [a1][a2]amerge,pan=stereo:c0code>

  the problem is If I have a 1 min long audio file and just want to extract a 18 sec part form it , and add it to video in a loop how can that be done