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• Best way to concatenate videos that have different resolution (generally 1080 or 720)

  5 mai 2022, par jap101

  from command line or python would be best. and i am trying to concatenate around 15 clips of 45 seconds. preferably easy to automate with different number of videos and of different length.

  


• How to stitch videos to one 360 video without 3rd party software ?

  6 janvier 2017, par Basset hound

  I am using a 3D software, something like GTA.
  I wanted to create a 360 video.
  What I did was create 84 videos automatically by C#.
  
  Set camera orientation to, (Step = 30 degree)
  

  1. (Rx, Ry, Rz) = (0.0, -90.0, 0.0)
  
  2. (Rx, Ry, Rz) = (0.0, -90.0, 30.0)
  
  3. (Rx, Ry, Rz) = (0.0, -90.0, 60.0)
  
  ...
  
  12. (Rx, Ry, Rz) = (0.0, -90.0, 330.0) 
  
  
  
  13. (Rx, Ry, Rz) = (0.0, -60.0, 0.0) 
  
  14. (Rx, Ry, Rz) = (0.0, -60.0, 30.0)
  
  15. (Rx, Ry, Rz) = (0.0, -60.0, 60.0) 
  
  ...
  
  83. (Rx, Ry, Rz) = (0.0, 90.0, 300.0) 
  
  84. (Rx, Ry, Rz) = (0.0, 90.0, 330.0) 

  After created 84 videos, I used Kolor Autopano Video to stitch the video.
  The result is good.
  
  However, I was wondering, each video has precise camera orientation.
  I think I don’t really need Kolor Autopano Video to create 360 video.
  Is it possible to stitch 84 videos by FFmpeg or C# ?
  Do you have any hint about this ?
  
  Thank you.

• stitching two videos into one using FFMPEG

  30 juillet 2015, par nikhil khare

  I am using FFmpeg to concatenate two videos. I use demuxer option like this.
  Created a file using following text.

  file '/var/www/html/test/input/video1.mp4'
  
  file '/var/www/html/test/input/video2.mp4'

  The codec, bit-rate and aspect ratio are same for both the videos. Now I use this command to generate the output

  ffmpeg -f concat -i mylist.txt -c copy merged.mp4

  It creates the output file with merging the videos but, when i position the seek button to any time it stops playing. The total video duration is also a lot more than the actual video duration.

  It also does not show the second video after the first video is finished. It keeps the last frame through out the video.

  I have found somewhere to mention the duration in the text file, but I am not able to implement it. Please help.