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• ffmpeg Error : Pattern type 'glob' was selected but globbing is not support ed by this libavformat build

  14 septembre 2017, par Aryan Naim

  I’m trying to convert group of ".jpg" files acting as individual frames into 1 single mpeg video ".mp4"

  Example parameters i used :

  frame duration  = 2 secs
  
  frame rate      = 30  fps
  
  encoder         = libx264 (mpeg)
  
  input pattern   = "*.jpg"
  
  output pattern  = video.mp4

  Based on ffmpeg wiki instructions at (https://trac.ffmpeg.org/wiki/Create%20a%20video%20slideshow%20from%20images), I issued this command :

  ffmpeg -framerate 1/2 -pattern_type glob -i "*.jpg" -c:v libx264 -r 30 -pix_fmt yuv420p video.mp4

  But I’m getting this error :

  [image2 @ 049ab120] Pattern type 'glob' was selected but globbing is not 
  
  supported by this libavformat build *.jpg: Function not implemented

  Which probably means the API pattern matching commands for my build/version have changed. By the way this my windows 32bit ffmpeg download build (ffmpeg-20150702-git-03b2b40-win32-static).

  How can I choose a group of files using pattern matching using ffmpeg ?

• Bash : sort find results using part of a filename

  13 novembre 2015, par utt50

  I have 3 webcams set up in a building, uploading still images to a webserver. I’m using ffmpeg to encode the jpgs to mp4 video.

  The directories are set up like this :

  Cam1/201504
  
  Cam1/201505
  
  Cam2/201504
  
  Cam2/201505
  
  Cam3/201504
  
  Cam3/201505

  I’m using the following bash loop/ffmpeg parameters to make one video per camera, per year. This works well so far (well... except that my SSD is rapidly degrading in performance - too many simultaneous read/write operations ?) :

  find Cam2/2013* -name "*.jpg" -print0 | xargs -0 cat | ffmpeg -f image2pipe -framerate 30 -vcodec mjpeg -i - -vcodec libx264 -profile:v baseline -level 3.0 -movflags +faststart -crf 19 -pix_fmt yuv420p -r 30 "Cam2-2013-30fps-19crf.mp4"

  The individual files are named like this (confusing ffmpeg’s built-in file sequencer) :

  Cam1_2015052413543201.jpg
  
  Cam1_2015052413544601.jpg
  
  Cam2_2015052413032601.jpg
  
  Cam2_2015052413544901.jpg

  I now need to create one video for an entire year across all 3 cameras, ordered by timestamp. To accomplish this, I need to sort the find results by the segment of the filename after the underscore.

  What do I pipe the find output to to accomplish this ? For example, the files above would be ordered like this :

  Cam2_2015052413032601.jpg
  
  Cam1_2015052413543201.jpg
  
  Cam1_2015052413544601.jpg
  
  Cam2_2015052413544901.jpg

  Any help is very much appreciated !

• ffmpeg is not executing clip.run() when compiled with pyinstaller

  24 septembre 2018, par Thriskel

  When executing the .exe file in another machine that doens’t have it’s requeriments installed, running the programs gives the error :

  Exception in thread Thread-1:
  
  Traceback (most recent call last):
  
    File "threading.py", line 916, in _bootstrap_inner
  
    File "threading.py", line 864, in run
  
    File "y2m.py", line 80, in workit
  
    File "site-packages\ffmpeg\_run.py", line 202, in run
  
    File "subprocess.py", line 707, in __init__
  
    File "subprocess.py", line 992, in _execute_child
  
  FileNotFoundError: [WinError 2] The system cannot find the file specified

  I’m compiling the exe file using the command :

  pyinstaller y2m.py

  I’ve been reading every other post in this and others forums refered to this kind of problem but I don’t seem to find or understand the way of fixing this.

  The source code is in here

  and the warny2m.txt file is in here

  Things that I have tried :

  • using —paths=pathToLibFolder
  • using -w
  • using an older pyinstaller version
  • adding python3 to path
  • using -p DIR to add C :\Python3\Lib location then sub locations, also individual scripts. (those 3 ways to see if it would work)

  EDIT :

  When using ffmpeg_run.py the code fails. line is clip.run() where clip presents the input and output file.