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• How to add transition effects like fade in, fade out, slide in, etc, to a video [on hold]

  31 mai 2018, par Janhavi Savla

  I am trying to add crossfade effect to a series of images ina folder and then create a video but I am getting an error :’tuple’ object has no attribute ’crossfadein’.
  How should I resolve it ?
  Here’s the code :

  from moviepy.editor import *
  
  import os
  
  
  
  delay =1
  
  H = 720
  
  W = 1280
  
  output = "out.mp4"
  
  path = "/Users/test/Desktop/Image_test_data/testdata2"
  
  dirs = os.listdir( path )
  
  ext = '.jpg'
  
  clips=[]
  
  images = [img for img in os.listdir(path) if img.endswith(ext)] 
  
  
  
  for image in images:
  
      img=ImageClip(path+'/'+image).set_duration(2).resize(height=H,width=W)
  
      clips.append(img)
  
  
  
  final = concatenate([clip.crossfadein(delay) for clip in enumerate(clips)],
  
       padding=-delay, method="compose")
  
  
  
  final.write_videofile(output,fps=24, audio_codec="aac")

• Concatenate Movies from Python List using MoviePy or FFmpeg

  24 septembre 2020, par Python_Learner_DK

  I have about 10,000 short videos that I am trying to make several longer videos from.

  



  I've created these videos using MoviePy, but keep getting memory errors when trying to concatenate them back together.

  



  In my code I have an outer loop going through each letter of the alphabet and getting the files that start with that letter.

  



  From the returned video clips I get the length and and strip off the last 3.5 seconds (outro_clip_duration) of the video, and then add it into a Python list clips.

  



  Where I'm stuck is I then want to take this list of trimmed videos and make one long long video from it.

  



  I have all the files, I just need to trim them, concatenate them, and then export them as one.

  



  I've tried many times with different MoviePy attempts and keep getting MemoryErrors so I gave up and took a swing at an ffmpeg solution seen here but it is not working out either.

  



  The latest version of the main part of my code is here :

  



  clips = []
outro_clip = mpy.VideoFileClip('Logo_Intro_w_Stinger_Large.mp4')
outro_clip_duration = outro_clip.duration
for def_image in vid_list_long:
    video_item = mpy.VideoFileClip('F:/sm_My_Video/sm_%s.mp4' % def_image)
    video_item_duration = video_item.duration
    clips.append(ffmpeg_extract_subclip(video_item,0,(video_item_duration - outro_clip_duration), targetname = def_image))

# #Append the outro_clip to the end 
clips.append(mpy.VideoFileClip('Logo_Intro_w_Stinger_Large.mp4',target_resolution = (h,w),audio=True))
slided_clips = [CompositeVideoClip([clip.fx( transfx.crossfadein, transition_seconds)]) for clip in clips]
#added 'method = compose' NEED TO TEST - supposedly removes the weird glitches.
c = concatenate_videoclips(slided_clips, method = 'compose')
c.write_videofile('F:/Extended_Play/%s_Extended_Play_vid.mp4' % letter,fps=23.98)


  



  My PC is Windows 10 and I have 32 GB of RAM running Anaconda and Python 3.

  


• Playing Several Videos in a Row From a Browser

  2 août 2014, par user18490

  It’s simple to play 1 video (using HTML5), but my question is, can you play 2 or more videos in a row.

  Basically I’d like to let the user select as many clips as he/she wants, and let him/her play them in the browser (or potentially an external player such as FFplay, but the browser is my goal for now). It’s similar to the concept of playlist in Youtube, ... there should be no cut between two consecutive clips (which is the case right now with playlist in Youtube).

  Is that possible with existing API/tools/techniques ?