Recherche avancée

Sur d’autres sites (12562)

• Using moviepy, how can I splice up long videos into 8-second bits ?

  18 septembre 2020, par ekinugurel

  relatively new python user here. I'm trying to use moviepy to splice up 5 min long videos into 8-second bits. I used the code in this thread to extract subclips and it works. I did the following to make it a loop that covers the whole video, but I only get one 8-sec video as an output :

  


  from moviepy.video.io.ffmpeg_tools import ffmpeg_extract_subclip
videopath = '../img/videos/Mopac+Cesarchavez-1.m4v'

for sec in videopath:
    sec = 0
    ffmpeg_extract_subclip(videopath, sec, sec+8.00, "../img/videos/subclips/testclip.mp4")
    if sec == 327:
        break


  


  Do I need to specify a naming convention so that my output isn't just one video ? How would I do that ?

  


• (no accepted answer) How to merge 2 overlapping videos into one video using ffmpeg or opencv ?

  3 janvier 2021, par Muhammad Umer

  Merging two videos is easy, been answered couple of times. What I have is multiple overlapping videos. A video might have overlaps with video before it. Meaning if video 1 covers 1-5 timeline then video 2 may overlap 1, and cover 3 to 8. Merging them as is would result in 1-5|3-8, when i need 1-8 only.

  



  Videos are alphabetically sorted.

  



  My general idea of solution is...

  



  

  • grab last frame of the video

  


  • if it's first video continue

  


  • if it's not first video, ie. 2nd, search for frame saved in previous steps frame by frame

  


  • if it reaches to last frame of current video then there is no overlap continue

  


  • if it founds a frame then clip 2nd video up to that frame inclusive and then go to next frame

  


  • once all videos have been analyzed, merge them into one video.

  


  



  I need to translate this to ffmpeg commands. Or opencv if that's a better tool.

  



  If there is better way of doing that, I'm interested in that too.

  


• Audio async when concatenating two videos

  18 août 2019, par John Smith

  I am concatenating two videos (mp4 files) using ffmpeg command.
  The resulted video file creates issue with audio. The video frames lags in comparison with audio.

  I have tried using "aresample" and "apad" properties of ffmpeg to tackle the issue but it didn’t resolved the issue.

  Command used for concat 2 mp4 files is as follows :-

  ffmpeg -y -safe 0 -f concat -i samplefilepath1.txt -c copy concat.mp4

  samplefilepath1.txt contains path of both sample videos which needs to be concatenated :-

  file sample1.mp4 (filepath 1)

  file sample2.mp4 (filepath 2)

  The video frames lags in comparison with audio.

  Here is the link where you can find all three videos(sample and result videos)

  https://gofile.io/?c=nXJckX