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• configure : speed up flatten_extralibs_wrapper()

  30 juillet 2018, par Avi Halachmi (:avih)

  configure : speed up flatten_extralibs_wrapper()
  x50 - x200 faster.
  Currently configure spends 50-70% of its runtime inside a single
  
  function : flatten_extralibs[_wrapper] - which does string processing.
  During its run, nearly 20K command substitutions (subshells) are used,
  
  including its callees unique() and resolve(), which is the reason
  
  for its lengthy run.
  This commit avoids all subshells during its execution, speeding it up
  
  by about two orders of magnitude, and reducing the overall configure
  
  runtime by 50-70% .
  resolve() is rewritten to avoid subshells, and in unique() and
  
  flatten_extralibs() we "inline" the filter[_out] functionality.
  Note that logically, "unique" functionality has more than one possible
  
  output (depending on which of the recurring items is kept). As it
  
  turns out, other parts expect the last recurring item to be kept
  
  (which was the original behavior of uniqie()). This patch preservs
  
  its output order.
  Tested-by : Michael Niedermayer <michael@niedermayer.cc>
  
  Tested-by : Helmut K. C. Tessarek <tessarek@evermeet.cx>
  
  Tested-by : Dave Yeo <daveryeo@telus.net>
  
  Tested-by : Reino Wijnsma <rwijnsma@xs4all.nl>
  
  Signed-off-by : James Almer <jamrial@gmail.com>
  

  • [DH] configure

• ffmpeg multiple text/logo elements

  17 septembre 2018, par omega1

  I am trying to add multiple items to an ffmpeg command and am getting stuck.

  So far in the command I am automatically updating one image, which I’m using as a video, I also want to add a logo and two lines of text.

  I have been successful until the last item, which is the logo overlay.

  This is the relevant part of code :

  ffmpeg \
  
      -f image2 -loop 1 \
  
      -y \
  
      -i "/var/www/html/image_rotate.png" \
  
      -re \
  
      -i audio.mp3 \
  
      -vf "movie=/var/www/html/overlay_logo.png [watermark]; [in][watermark] overlay=0:0 [out], drawtext=fontsize=10:fontfile=/var/www/html/OpenSans-Regular.ttf:textfile=/var/www/html/text1.txt:box=1:boxcolor=#000000:fontcolor=#FFFFFF:x=0:y=(h-text_h-20):reload=1, drawtext=fontsize=10:fontfile=/var/www/html/OpenSans-Regular.ttf:textfile=/var/www/htmltext2.txt:box=1:boxcolor=#000000:fontcolor=#FFFFFF:x=0:y=(h-text_h-30)" \

  This gives me the following error :

  Simple filtergraph ... was expected to have exactly 1 input and 1 output. However, it had >1 input(s) and >1 output(s). Please adjust, or use a complex filtergraph (-filter_complex) instead.

  If I remove the last part I added (the overlay logo) I do not get the error.
  If I add multiple -vf it only processes one (the text OR the logo).

  I’m not sure how to achieve this.

• ffmpeg : Invalid data found when processing input

  20 septembre 2018, par Rich_F

  I have a situation where ffmpeg is throwing an error :

  Invalid data found when processing input

  I’ve reviewed other answers here, but my situation is different. I generate in Ruby, a text file with a list of input files I want to concatenate together into one large video.

  I generate in Ruby, the command meant for bash, which is also output for me to manually copy :

  ffmpeg -y -f concat -safe 0 -i /Volumes/Dragon2/Yums/randoms.txt /Volumes/Dragon2/Yums/final.mp4

  Throws an error :

  /Volumes/Dragon2/Yums/randoms.txt: Invalid data found when processing input

  Here is that file :

  file '/Volumes/Dragon2/Yums/0CEDC3CA-4571-4271-9938-A161EC2A887B.mov'
  
  file '/Volumes/Dragon2/Yums/0D25D907-D053-443B-AFC6-9F12B1711BBF.mov'
  
  file '/Volumes/Dragon2/Yums/6A272808-7706-435D-801E-ACE6B42EC749.mov'
  
  file '/Volumes/Dragon2/Yums/6E9BA2F1-C5E7-4C1C-B290-D116105732FA.mov'
  
  file '/Volumes/Dragon2/Yums/0A41C7B7-74CE-484E-B029-3AE57B8BB4EA.mov'

  When bash runs it, it complains about the input file randoms.txt having invalid data. When I copy and paste the very same command in bash, it works fine. I’m stumped as to how the two are different and why ffmpeg is not happy when initiated in the shell.

  How can I get this to work ? What am I missing ? Cheers

  EDIT : Original ruby code :

  `clear`
  
  require 'pathname'
  
  require 'pp'
  
  
  
  s = '/Volumes/Dragon2/Yums'
  
  files = []
  
  
  
  Dir.foreach(s) do |path|
  
    files << "#{ s }/#{ path }"  
  
  end
  
  
  
  result = files.sample(files.size)           # randomizer
  
  
  
  f = File.open("#{ s }/randoms.txt", 'w+')
  
  result.each_with_index do |item, i|
  
    pp "#{ i }: #{ item }" if item.include?('mov')
  
    f << "file '#{ item }'\n" if item.include?('mov')
  
  end
  
  
  
  `echo `
  
  
  
  File.delete("#{ s }/final.mp4") if File.exists?("#{ s }/final.mp4")
  
  s = "ffmpeg -y -f concat -safe 0 -i #{ s }/randoms.txt #{ s }/final.mp4"
  
  puts s
  
  
  
  sleep 3
  
  `#{ s }`

  I have also tried system s as well with the same error. The syntax is generated fine, output fine, operates fine manually.