Recherche avancée

Sur d’autres sites (6712)

• How to concatenate video files from different sub directories using ffmpeg in win10 command prompt ?

  23 avril 2021, par raymerium

  How can I merge 1200 small mp4 files scattered in 60 subfolder, into one big file ?

  


  My IP Camera records and stores videos in 3 second video files.
An hour long recording is stored into 60 subfolders (one for each minute). And in each of those subfolder are 20 mp4 files. (one mp4 is 3 seconds)

  


  I found a way of doing it by having to copy each and every one of those small mp4 files into one main folder. Then use command prompt :

  


  (for %i in (*.mp4) do @echo file '%i') > mylist.txt       


  


  to make a list file

  


  then run :

  


  ffmpeg -f concat -i mylist.txt -c:v copy output2.mp4


  


  And this gets the job done. But is there any graceful way of doing it without having to copy paste all of the video files ?

  


• Why does PowerShell closes ff-prompt.bat before executing my commands

  9 mars 2014, par sebastian

  Okay guys looks like I have another question to ask, which is kind of related to my last question, which can be found on here : How to start ffprobe with Windows PowerShell. There I was asking how to start ffprobe with Windows PowerShell and after trying out a few things I got it, well lets say, started for a second before it closes again.
  I tried it with following commands in PowerShell :

  $env:Path = ';C:\Users\Administrator\bin\'
  
  $title = "A_Day_for_Cake_and_Accidents"
  
  Start-Process ff-prompt.bat -ArgumentList "ffprobe -show_streams -select_streams v -print_format xml -count_frames C:\Users\Administrator\Desktop\dcp_bearbeitet\$title\$title.mov > C:\Users\Administrator\Desktop\dcp_bearbeitet\$title\totalframes.xml"

  The result, and that is the strange thing, is the xml file with only the standard text from the ff-prompt.bat, which looks like this :

  C :\Users\Administrator>ECHO OFF
  ffmpeg version N-60959-g669043d
  built on Feb 27 2014 22:01:58 with gcc 4.8.2 (GCC)
  configuration : —enable-gpl —enable-version3 —disable-w32threads —enable-avisynth —enable-bzlib —enable-fontconfig —enable-frei0r —enable-gnutls —enable-iconv —enable-libass —enable-libbluray —enable-libcaca —enable-libfreetype —enable-libgsm —enable-libilbc —enable-libmodplug —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libopenjpeg —enable-libopus —enable-librtmp —enable-libschroedinger —enable-libsoxr —enable-libspeex —enable-libtheora —enable-libtwolame —enable-libvidstab —enable-libvo-aacenc —enable-libvo-amrwbenc —enable-libvorbis —enable-libvpx —enable-libwavpack —enable-libx264 —enable-libx265 —enable-libxavs —enable-libxvid —enable-zlib
  libavutil 52. 66.100 / 52. 66.100
  libavcodec 55. 52.102 / 55. 52.102
  libavformat 55. 33.100 / 55. 33.100
  libavdevice 55. 10.100 / 55. 10.100
  libavfilter 4. 2.100 / 4. 2.100
  libswscale 2. 5.101 / 2. 5.101
  libswresample 0. 18.100 / 0. 18.100
  libpostproc 52. 3.100 / 52. 3.100
  For help run : ffmpeg -h
  For formats run : ffmpeg -formats | more
  For codecs run : ffmpeg -codecs | more
  Current directory is now : "C :\Users\Administrator\bin"
  The bin directory has been added to PATH

  My first thought was, that it did not work at all, but then I was wondering why I get an XML file when it is not working at all. PowerShell executes the ff-prompt.bat for maybe a second, before PowerShell shuts down the ff-prompt.bat again without doing half of my commands. Does anybody know why ff-prompt gets closed before executing all of my commands ?

  EDIT : So what I tried is something that should execute it directly, but in fact I get a shitload of errors :

  $title = "A_Day_for_Cake_and_Accidents"
  
  $Cmd = ‘C:\Users\Administrator\ffmpeg\bin\ffprobe.exe’
  
  $Arg1 = ’ffprobe '
  
  $Arg2 = ‘-show_streams ’
  
  $Arg3 = ‘-select_streams v '
  
  $Arg4 = ‘-print_format xml '
  
  $Arg5 = ‘-count_frames '
  
  $Arg6 = "C:\Users\Administrator\Desktop\dcp_bearbeitet\$title\$title.mov >"
  
  $Arg7 = " C:\Users\Administrator\Desktop\dcp_bearbeitet\$title\totalframes.xml"
  
  & $Cmd $Arg1 $Arg2 $Arg3 $Arg4 $Arg5 $Arg6 $Arg7

  Error message(s) I get :

  "ffprobe.exe
  Failed to set value '-select_streams v ' for option 'show_streams ' : Option not found"

  The problem I am facing now is that -show_streams does not get a value, so maybe that is the reason why he uses the next parameter as a value, is there anything I can do ?

• doc/general : s/Libav/FFmpeg

  11 juin 2013, par Paul B Mahol

  doc/general : s/Libav/FFmpeg
  Signed-off-by : Paul B Mahol <onemda@gmail.com>
  

  • [DH] doc/general.texi