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• How can I get Python to find ffprobe ?

  4 novembre 2018, par tburrows13

  I have ffmpeg and ffprobe installed on my mac (macOS Sierra), and I have added their path to PATH. I can run them from terminal.

  I am trying to use ffprobe to get the width and height of a video file using the following code :

  import subprocess
  
  import shlex
  
  import json
  
  
  
  
  
  # function to find the resolution of the input video file
  
  def findVideoResolution(pathToInputVideo):
  
      cmd = "ffprobe -v quiet -print_format json -show_streams"
  
      args = shlex.split(cmd)
  
      args.append(pathToInputVideo)
  
      # run the ffprobe process, decode stdout into utf-8 & convert to JSON
  
      ffprobeOutput = subprocess.check_output(args).decode('utf-8')
  
      ffprobeOutput = json.loads(ffprobeOutput)
  
  
  
      # find height and width
  
      height = ffprobeOutput['streams'][0]['height']
  
      width = ffprobeOutput['streams'][0]['width']
  
  
  
      return height, width
  
  
  
  h, w = findVideoResolution("/Users/tomburrows/Documents/qfpics/user1/order1/movie.mov")
  
  print(h, w)

  I am sorry I cannot provide a MCVE, as I didn’t write this code, and I don’t really know how it works.

  It gives the following error :

  Traceback (most recent call last):
  
    File "/Users/tomburrows/Dropbox/Moviepy Tests/get_dimensions.py", line 21, in <module>
  
      h, w = findVideoResolution("/Users/tomburrows/Documents/qfpics/user1/order1/movie.mov")
  
    File "/Users/tomburrows/Dropbox/Moviepy Tests/get_dimensions.py", line 12, in findVideoResolution
  
      ffprobeOutput = subprocess.check_output(args).decode('utf-8')
  
    File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/subprocess.py", line 626, in check_output
  
      **kwargs).stdout
  
    File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/subprocess.py", line 693, in run
  
      with Popen(*popenargs, **kwargs) as process:
  
    File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/subprocess.py", line 947, in __init__
  
      restore_signals, start_new_session)
  
    File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/subprocess.py", line 1551, in _execute_child
  
      raise child_exception_type(errno_num, err_msg)
  
  FileNotFoundError: [Errno 2] No such file or directory: 'ffprobe'
  
  </module>

  If python is not reading from the PATH file, how can I specify where ffprobe is ?

  Edit :
  It appears the python path is not aligned with my shell path.
  Using os.environ["PATH"]+=":/the_path/of/ffprobe/dir" at the beginning of each program allows me to use ffprobe, but why might my python path not be the same as my shell path ?

• Windows ffmpeg batch to find folder containing VOBs, concatenate and convert, move to next folder [on hold]

  27 novembre 2018, par Daniel Cooper

  All,

  I am in need of help that is beyond my capabilities. I need to run a batch command in Windows that finds VOB files in a folder, concatenates and converts them using ffmpeg, and then continues the recursive search for more folders containing VOBs.

  The idea is that the cmd file would be copied into the root that the command should look under when running. I have found commands that find VOBs and I have found ffmpeg scripts that concatenate and convert, but combining these functionalities together in the way I need is proving above my level.

  Thank you all in advance.

  EDIT :
  The computer I am running this code on is off the network so I had to manually retype. Any typo’s here are therefore likely from the retyping since the codes seem to function as intended originally...

  This code creates a list of folders that contain VTS*.VOB (as opposed to just all *.VOBs because that would include a certain useless VOB that is present in each folder).

  for /r %%a in (.) do @if exist "%%~fa\VTS*.VOB" echo %%~fa >> folderlist.txt

  This piece combines VTS*.VOBs and then converts them to MP4

  @ECHO OFF
  
  md ffmpeg_output
  
  for %%f in (VTS*.VOB) do echo file '%%f' >> filelist.txt
  
  ffmpeg -f concat -i filelist.txt -c copy "ffmpeg_output\Total.VOB"
  
  ffmpeg -i "ffmpeg_output\Total.VOB" -c:v libx264 -pix_fmt yuv420p -c:a copy "ffmpeg_output\Converted.mp4"

  I attempted to essentially nest the for loops with the idea that the first snippet above would produce a txt file, which I could then "for /f" through each line to direct the second snippet of code for concatenation and conversion of the VOB files. However this plan never got off the ground as I am unable to figure out the viability or syntax of nesting for loops in this way.

• FFMPEG cannot seems to find the font file. Defaulting to mingliub.ttc windows font

  27 décembre 2018, par atis

  These are the commands I’m trying to use

  ffmpeg -i D:\Path\To\footage.mp4 -vf drawtext="fontfile=D:\Path\To\font.otf: text='test': fontcolor=white: fontsize=55: box=1: boxcolor=#D02120: boxborderw=5: x=(w-text_w)/2: y=2" -codec:a copy D:\Path\To\output.mp4

  and

  ffmpeg -i D:\Path\To\footage.mp4 -vf drawtext="fontfile="D:\\Path\\To\\font.otf": text='test': fontcolor=white: fontsize=55: box=1: boxcolor=#D02120: boxborderw=5: x=(w-text_w)/2: y=2" -codec:a copy D:\Path\To\output.mp4

  Similar commands work fine in Linux with Linux path "/" instead of "\".

  The font also work on both Windows and Linux.

  Exact line where I saw the error

  Fontconfig error: Cannot load default config file
  
  [Parsed_drawtext_0 @ 0000021cce8ffe40] Using "C:/WINDOWS/fonts/mingliub.ttc"

  About FFMPEG

  ffmpeg version N-92780-gbb586a9703 Copyright (c) 2000-2018 the FFmpeg developers
  
  built with gcc 8.2.1 (GCC) 20181201
  
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv 
  
  --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb 
  
  --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy 
  
  --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp 
  
  --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp 
  
  --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid 
  
  --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc 
  
  --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt

  The commands do process the footage and provide an output, but with wrong fonts (mingliub)

  What could I be doing wrong here ?