Recherche avancée

Sur d’autres sites (12046)

• Concatenate a large number of videos with moviepy

  10 décembre 2016, par Anis Souames

  I’m using moviepy to create compilations automatically, I have around 20 mp4 videos with less than 2 mins each that are concatenated into one large video file using moviepy .
  However I’m facing a lot of difficulty because each time I try to concatenate this large number of videos I get an OSError: Cannot Allocate Memory Error . So the way I’m doing it is that I first create one part with 10 vids and a second part with 10 vids and then concat both of them. this method works however it’s very time and cpu consuming .

  Is there a straight forward way to concatenate a large number of videos ? My bot is running on an Ubuntu Server with 1GB of RAM and 10 GB of disk space . For 20 typical vids I have approxiamtely 60MB of vids to get processed and compiled . 1GB of ram should handle this without any problem. :

  Here’s the code I’m using :

  for video_name in videos_filename[0:len(videos_filename)/2]:
  
      try:
  
          print video_name
  
          clip = mv.VideoFileClip(video_name, audio=True)
  
          clip = clip.resize(width=720, height=480)
  
          video_clips.append(clip)
  
      except:
  
          print "Error in adding clips.... Part 1"
  
      pdb.set_trace()
  
      final_clip = mv.concatenate_videoclips(clips=video_clips, method="compose")
  
      finalFile = mv.write_videofile(someName, fps=60, codec="libx264")

  I’m sure that the mv.concatenate_videoclips(clips=video_clips, method="compose) is responsible for the error that I’m getting, How can I fix that and stop using a partial solution ? Should I quit moviepy and use another module ? Maybe ffmpeg directly ?

• FFMpeg create a video from a large number of images

  15 décembre 2016, par Herman Yanush

  So I have a directory, where script ran by cron puts photos from my webcam. And I want to make a sort of timelapse. So i want to join this images to a video, one image = new frame (no delay).

  So i have a jpg images filenamed

  YYYY-MM-DD_HH_MM-webcamshot.jpg

  And i want to join them into a mp4 video.

  I found out that i can do it with FFMpeg for ex. with this command

  ffmpeg -pattern_type glob -i '*.jpg' -c:v libx264 output.mp4 (from here)

  FFMpeg output log

  But unfortunately this only joins the first 600 (or a bit more) of 2.5K images in the directory.

  So i want to know :

  1. Can FFMpeg join more images (maybe unlimited amount) ?

  2. Is it problem of using -pattern type glob instead of wildcard ?

  3. If it can’t, how to split images into directories and make videos from these directories and then join or rename images to format like img01729.jog so wildcard img%04.jpg can be used ?

  FFMpeg on Linux Mint (ubuntu 16.04).

• wmavoice : truncate spillover_nbits if too large

  1er janvier 2017, par Andreas Cadhalpun

  wmavoice : truncate spillover_nbits if too large
  This fixes triggering the av_assert0(ret <= tmp.size).
  The problem was reintroduced by commit
  
  7b27dd5c16de785297ce4de4b88afa0b6685f61d and originally fixed by
  
  2a4700a4f03280fa8ba4fc0f8a9987bb550f0d1e.
  Reviewed-by : Ronald S. Bultje <rsbultje@gmail.com>
  
  Signed-off-by : Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
  

  • [DH] libavcodec/wmavoice.c