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• avutil/file_open : avoid file handle inheritance on Windows

  29 octobre 2015, par Tobias Rapp

  avutil/file_open : avoid file handle inheritance on Windows
  Avoids inheritance of file handles on Windows systems similar to the
  
  O_CLOEXEC/FD_CLOEXEC flag on Linux.
  Fixes file lock issues in Windows applications when a child process
  
  is started with handle inheritance enabled (standard input/output
  
  redirection) while a FFmpeg transcoding is running in the parent
  
  process.
  Links relevant to the subject :
  https://msdn.microsoft.com/en-us/library/w7sa2b22.aspx
  Describes the _wsopen() function and the O_NOINHERIT flag. File handles
  
  opened by _wsopen() are inheritable by default.
  https://msdn.microsoft.com/en-us/library/windows/desktop/ms682425%28v=vs.85%29.aspx
  Describes handle inheritance when creating new processes. Handle
  
  inheritance must be enabled (bInheritHandles = TRUE) e.g. when you want
  
  to pass handles for stdin/stdout via lpStartupInfo.
  Signed-off-by : Tobias Rapp <t.rapp@noa-audio.com>
  
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libavutil/file_open.c

• ffmpeg windows - combine multiple videos in folder and subfolders into one video [closed]

  21 décembre 2020, par Kirill

  I have Xiaomi security camera which is saving videos with length of 3 sec.
So I have such structure of my full day capture :
Folder with name of date, for example 20201221, that contains subfolders with hours (00 ; 01 ; 02 ; ... ; 23 ;), each of these folders contains subfolders with minutes (00 ; 01 ; ... ; 59 ;), each of them contains 20 mp4 video files with 3 seconds duration.
I need to generate one mp4 video of whole day with help of ffmpeg and windows 10 command line.
Can someone help me to do these ?
Thank you !

  


• FFMPEG in Windows 7 : merge mp4 files from different folders in a batch

  22 avril 2014, par user3406207

  I would like to concatenate 3 mp4 videos into one avi video for every folder of a directory, with FFMPEG on Windows 7.

  I have started this way :

  ffmpeg -f concat -i mylist.txt -c copy E:\EA2014\EX14R\EX14R.avi

  with mylist.txt being :

  file 'E:\EA2014\EX14R\DCIM\100GOPRO\GOPR0001.MP4' 
  
  file 'E:\EA2014\EX14R\DCIM\100GOPRO\GP010001.MP4' 
  
  file 'E:\EA2014\EX14R\DCIM\100GOPRO\GP020001.MP4' 

  This works fine. Now, I would like to automate it because I have lots of those folders full of videos to merge.
  I tried with this to start with :

  printf "file '$s'\n" .E\EA2014\EX14R\DCIM\100GOPRO\*.MP4 >> mylist.txt

  But it tells me that

  "printf is not recognized as an internal or external command, operable program or batch file"

  Is it because I work in Windows ? Anyone could help me achieve it in another way ?

  Needless to say that I am a newbie !

  Thanks !