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• Rails Streamio FFMPEG taking a screenshot of the movie and upload with carrierwave

  5 juin 2016, par Felix

  I have got a Form where I can upload a movie. Its uploaded with carrierwave.

  In this process I want to Make a screenshot of the movie while uploading.

  How can I do this with Streamio FFMPEG.

  My code Looks like this at the moment.

  #Laedt ein Video hoch
  
  def uploadMovie
  
    @channels = Channel.all
  
    @vid = Movie.new(movies_params)
  
  
  
    @channel = Channel.find(params[:channel_id])
  
    @vid.channel = @channel
  
  
  
    if @vid.save
  
      flash[:notice] = t("flash.saved")
  
      render :add
  
    else
  
      render :add
  
    end
  
  end

  Do I have to do this in controller method or in the carrierwave uplaoder ?

  Update : I tried it this way :

  if @vid.save
  
    flash[:notice] = t("flash.saved")
  
    movieFile = FFMPEG::Movie.new(@vid.video.to_s)
  
    screenshot = movieFile.screenshot("uploads/screenshot", :seek_time => 10)
  
    render :add
  
  else

  But then I got tis error :

  s3.amazonaws.com/uploads/movie/video/6/2016-04-24_16.26.10.mp4' does not exist

• avformat/subtitles : reduce log level of UTF-16 warning

  29 octobre 2014, par wm4

  avformat/subtitles : reduce log level of UTF-16 warning
  Applications can use this to silence the message.
  

  • [DH] libavformat/subtitles.c

• FFMPEG - Convert video with subtitles

  29 décembre 2014, par Barnab

  There is a .mkv video with encoded subtitles that I would like to convert to .mp4 with again the same encoded subtitles.

  I have managed to

  1. Extract subtitles from a video (except in the particular case of dvd_subtitle format)
  2. Add them to another video (using something like ffmpeg -i in.mp4 -i sub.srt -map 0 -map 1 -c copy -c:s mov_text out.mp4)

  but I was wondering if there was a command that could do both steps at the same time. It seems possible to redirect input streams such as video or audio into the output file but I can’t make it work with subtitles.

  That may be useful in the aforementioned case of dvd_subtitle subtitle format. The extraction part fails but maybe a more simple command combining the two steps would bypass this problem.