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• FFMPEG extremely slow conversions [on hold]

  7 juin 2014, par Kudos

  I am converting a webm video to mp4.
  on my localhost (16gb, quad core, ssd) the process takes 10-15 seconds for a 30 second video.

  on my staging, Medium AWS instance
  the same command takes 10 minutes

  the command i’m using is :

  ffmpeg -i test.webm -vcodec libx264 test.mp4

  I realise there is a difference in server resources, but surely not to such an extent to have such a disparity.
  local : fps = 150
  staging : fps = 10

  I can’t stream copy as the vp8 container can’t accept the headers.

  ffmpeg version is 2.2 (both)

  verbose output shows no errors.

• FFMPEG : merging multiple audio (MP3) and single image convert them into a video [on hold]

  9 décembre 2013, par user3027136

  I'm tired of searching for this problem. I have found 2 solutions here, but both work only partially.
  What I want to do is to convert all the MP3 inside a folder (if possible subfolders, too) to avi or anything else accepted by Youtube. I have created 2 .bat that should do this (according to the other threads here). They don't, one of them creates the avi without the image (black) and the other seems to capture the screen.
  Here they are.
  If you know about ffmpeg please point me to the right direction. Thank you.

  This one uses mp3info.exe - to be honest I have no idea what mp3info does, I just guess it finds the lenght of the song to be mathed later with the length of the video.

  @echo off
  
  for %%a in (*.mp3) do (
  
  for /f "delims=" %%b in ('mp3info.exe -p %%S "%%a"') do (
  
  ffmpeg -i "%%a" -loop 1 -r 1 -i "cover.jpg" -acodec copy "%%~na.mp4" -t %%b
  
  )
  
  )

  This seems more simple, runs faster but captures the screenshot and ignores the cover.jpg file.

  @echo off
  
  for %%A IN (*.mp3) DO ffmpeg -i "%%A" -i "cover.jpg" "%%A.mpg"
  
  done

  mp2info.exe, cover.jpeg and the .bat scripts are in the same folder with the .mp3 files.

• FFMPEG how to split avi to multi parts [on hold]

  1er juin 2014, par user3695970

  am running ffmpeg.exe from windows xp i want to know is there a command i can cut .avi movie file into several parts without a setting start and end time.

  1 : is it possible to set a value of MB for example slick every 40mb till it reaches end of movie file

  2 : is it possible to cut movie in to several parts by 10minutes or custom value time.

  please guys you people have alot of experience in this field i seek help please anybody thanks.

  ffmpeg -i largefile.mp4 -t 00:50:00 -c copy smallfile1.mp4 -ss 00:50:00 -c copy smallfile2.mp4

  tried this but i need better example a 1 line of command to slice entire movie into parts please