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• Paperclip Video Skewed (does not maintain aspect ratio)

  3 septembre 2015, par zreitano

  The video uploaded does not maintain aspect ratio. In the readme (paperclip av-transcoder) it says, " ’ !’ - Keep the same aspect of the image/video, but with the passed dimension." I have also tried the other options(<># !) and none of them effect the size of the video.

  My goal is to be able to be able to have the video returned in a square (while maintaining the aspect ratio). Cropping from the center would be ideal, as well.

  Any help would be greatly appreciated. I included my code below.

  class Video < Post
  
  
  
    Paperclip.interpolates :id do |attachment, style|
  
      attachment.instance.id
  
    end
  
  
  
    #basename/extension is paperclip interpolation from attachment, can write own interpolations as needed
  
  
  
    # have to link /usr/local/bin to the linuxbrew version of ffmpeg
  
    has_attached_file :video,  path: "/posts/videos/:id/:style.:extension",
  
    :styles => {
  
      :square => {:geometry => "500x500!", :format => 'mp4', :streaming => true }
  
    },
  
    :processors => [:transcoder]
  
  
  
    validates_attachment :video, :presence => true,
  
                             :content_type => { content_type: ["video/mp4", "video/mov", "video/mpeg","video/mpeg4", "video/quicktime"] }
  
  
  
    def video_url
  
      video = self.video
  
      if video.present?
  
        return video.url(:square)
  
      end
  
    end
  
  
  
  end

• Create image with audio and concate to another video

  17 décembre 2019, par Milk_Dream

  Please help me understand ! I spent a lot of time... :( Thank you !

  I’m stuck with a problem. I have a stream with damaged video and normal audio. And 2nd video, continued, with normal video and audio. I want to attach a picture to the beginning of an undamaged video with normal audio from damaged video without re-encoding the normal video.

  I try this one :

  ffmpeg -hide_banner -loop 1 -framerate 50 -t 3478 -i image.jpg -t 3478 -i audio.mp3 -i video.mp4 -filter_complex "[0:0] [1:0] [2:0] [2:1] concat=n=2:v=1:a=1" output.mp4

  But it converts normal video.

  Mediainfo from normal video :

        Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.12.100
  
    Duration: 00:56:31.61, start: 0.000000, bitrate: 3726 kb/s
  
      Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 3594 kb/s, 27.46 fps, 50 tbr, 50k tbn, 100 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler

• Splitting multiple videos into shorter ones at once

  6 juin 2022, par detach429

  I am trying to split my videos into multiple shorter ones, I've managed to make it work for one video, code is given below, but I have multiple videos saved in a folder and I want the code to go through all of them at once, so I don't have to manually change paths for every video, can anyone help ?

  &#xA;

  required_video_file = 'Videos/Logitech/LogiCapture/1_stresni.mp4'

with open("times.txt") as f:
  times = f.readlines()

times = [x.strip() for x in times] 

for time in times:
  starttime = int(time.split('-')[0])
  endtime = int(time.split("-")[1])
  ffmpeg_extract_subclip(required_video_file, starttime, endtime, targetname=str(times.index(time)+1)+".mp4")```



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