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• creating video from selected images using FFMPEG through command Line Android

  7 septembre 2016, par Raheel Mushtaq

  i am trying to make a video from selected images from command line using ffmpeg in android

  using this project as my source i m trying to make video

  this is the command i m trying to create video

     String[] ffmpegCommand = {ffmpegBin,
  
              "-y",
  
              "-qscale",
  
              "1",
  
              "-r", "" + frameRate,
  
              "-i", image1.getAbsolutePath(),
  
              "-t", "" + (((4) * 30) + 4), //"-s",heightwidth,
  
              "-i", image2.getAbsolutePath(),
  
              "-t", "" + (((4) * 30) + 4), //"-s",heightwidth,
  
              "-i", image3.getAbsolutePath(),
  
              "-t", "" + (((4) * 30) + 4), //"-s",heightwidth,
  
              "-i", image4.getAbsolutePath(),
  
              "-t", "" + (((4) * 30) + 4), //"-s",heightwidth,
  
              "-vcodec",
  
              "libx264",
  
              "-s",
  
              "640x480",
  
              outputFile.getAbsolutePath()};

  but the video created shows only 1st image and video is created of less than a second

  what is the problem in this statement ? and why only 1 image is shown in video ?

  sorry about my bad english

• How do I make FFMPEG use localized strftime with drawtext ?

  3 décembre 2022, par Randy Michnovicz

  I'm trying to write a script to use FFMPEG to draw localized timestamps on a video, but I'm not having much luck.

  


  I can confirm I have the locale fr_FR.UTF-8 installed on my system by running the following command : LC_ALL=fr_FR.UTF-8 date

  


  However, the following command produces a 4 second video beginning with the string "Monday 28 November 2022 19:00:47 PST" on both my Mac and an Alpine Linux docker container :

  


  LC_ALL=fr_FR.UTF-8 ffmpeg -hide_banner -f lavfi -i color=size=1024x768:rate=25:color=black -c:v libx264 -c:a aac -filter_complex drawtext=expansion=normal:fontsize=18:fontcolor=white:box=1:boxcolor=black@0.5:text='%{pts\\:localtime\\:1669690847\\:%A %-d %B %Y %X %Z}' -t 4 -y out.mp4

  


  Does anyone know how to make it create strings with non-English text ?

  


• How to upload a transcoded file to s3 and create a link to download it

  29 septembre 2022, par Dotun Longe

  I want to download a video after my module "creates" it by combining a picture and audio file. The output goes to my tmp folder. This works, but I don't know how to access it.

  


  My method is to create another Paperclip attachment called "converted" and the module responsible for transcoding should also be responsible for uploading the converted video to a bucket, where I can then access it via @upload.converted.url.

  


  I have no idea how to go about this, and my eyes hurt from searching. If you have a better way for me to be able to download the transcoded video without this option, I will be open to it.

  


  # videocreatingproccessor.rb

require 'streamio-ffmpeg'
require 'fileutils'

module VideoCreatingProcessor
  def self.convert_to_video (path_to_audio_file, path_to_image_file)
    movie = FFMPEG::Movie.new(path_to_audio_file)
    options = {
      video_codec: "libx264",
      frame_rate: 60,
      resolution: "960x720",
      x264_vprofile: "high",
      x264_preset: "slow",
      pixel_format: "720p",
      audio_codec: "libfaac",
      audio_bitrate: 32,
      audio_sample_rate: 44100,
      audio_channels: 2,
      threads: 2,
    }

    woptions = { watermark: path_to_image_file, resolution: "960x720", watermark_filter: { padding_x: 10, padding_y: 10 } }

    movie.transcode("tmp/output.mp4",woptions ,options )
  end
end


  


  # uploads_controller.rb

class UploadsController < ApplicationController
  before_action :set_upload, only: [:show, :edit, :update, :destroy]

  def index
    @uploads = Upload.all
  end

  def paudioaddress
    "https:" + @upload.audio.url
  end

  def pimageaddress
    "https:" + @upload.image.url
  end

   def show
    require "video_creating_processor"
    newvideo = VideoCreatingProcessor.convert_to_video(paudioaddress, pimageaddress)
   end

   # ....
end