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• FFMPEG Script Produces video of 1 second

  17 septembre 2019, par Tim J

  I am trying to work the script found here

  #########################
  
  ## START CONFIGURATION ##
  
  #########################
  
  
  
  # path to video playlist.txt
  
  playlist="playlist.txt";
  
  
  
  # output frame size
  
  outsize="1920x1080";
  
  
  
  # frames per second
  
  fps="60";
  
  
  
  # video bitrate
  
  bv="20M";
  
  
  
  # audio bitrate
  
  ba="256k";
  
  
  
  # video codec
  
  cv="h264";
  
  
  
  # audio codec
  
  ca="libfdk_aac";
  
  
  
  # output container format
  
  fmt="flv";
  
  
  
  # base frequency (Hz)
  
  bfreq="20";
  
  
  
  # end frequency (Hz)
  
  efreq="1420";
  
  
  
  #######################
  
  ## END CONFIGURATION ##
  
  #######################
  
  
  
  randfile="$(cat "$playlist" | rl | head -1)";
  
  duration="$(mediainfo --Inform="Video;%Duration/String3%" $randfile)";
  
  viz="volume=2,showcqt=s=1920x144:text=0:r=$fps:axis=0:basefreq=$bfreq:endfreq=$efreq:count=15:sono_g=4:bar_g=4:bar_v=35:sono_h=144:sono_v=bar_v*a_weighting(f):tc=0.1,rotate=1200*sin(200*PI/200*t):ow=24:oh=24:c=none,scale=$outsize,setsar=1/1[viz];[1:v]scale=$outsize,setsar=1/1[vid1];[viz][vid1]blend=all_mode=heat:shortest=1:repeatlast=0,hue="H="2*PI*t/420""";
  
  enc="-s $outsize -c:a $ca -b:a $ba -c:v $cv -preset ultrafast -b:v $bv -profile:v high -level 4.2 -g "$(bc <<< $fps*2)" -bf 2 -x264opts keyint="$(bc <<< $fps*2)":min-keyint="$(bc <<< $fps*2)":8x8dct=1 -pix_fmt yuv420p -r $fps";
  
  ffmpeg -hide_banner -i "$1" -r $fps -i "$randfile" -filter_complex $viz $enc -t $duration -shortest -f $fmt "$2";

  When running however I am only getting a video output of 1 second, there is no exit message the process just ends.

  The command I am running is ./ffviz.sh http://50.7.77.114:8277 output.mp4

  The 1 second clip does contain the correct mp4 and and audio, so I believe the process is working, I am not able however to make it run it for longer than 1 second.

• Batch-file script to automatically add an mp3 track to the same mp4 video in ffmpeg [closed]

  15 janvier, par Poro

  I have several video and audio files :

  


  

  • file 01.mp3

  


  • file 01.mkv

  


  • file 02.mp3

  


  • file 02.mkv

  


  • file 03.mp3

  


  • file 03.mkv

  


  


  what should be the script for ffmpeg to take each video file and add an additional second audio track with the same name (file 01.mkv + file 01.mp3) ?

  


  it's a main question

  


  But ultimately I need to get each video (let's say it's mp4) with 3 audio streams :

  


  

  1. mixed stream from mp3 (100%) + mkv (10% volume) - by default

  


  2. stream from mp3 file (100%)

  


  3. and last stream from mkv (100% volume)

  


  


  I would like to write all these commands in one batch-file

  


  I already use .bat files to automatically convert to another format (for example) :

  


  for %%i in (*.mkv) do (
ffmpeg -y -i "%%i" -c copy "%%~ni.mp4"
)


  


  As far as I understand, for the audio track task I need to set a variable for .mp3 (besides %%i ) and make it compare to the .mkv name, but I don't understand how to do it correctly.

  


  to manually add a track, I use (for example) :

  


  ffmpeg -i video.mkv -i audio.mp3 -map 0 -map 1:a -c:v copy -shortest output.mkv


  


  to change the track order and set the default track, I use (for example) :

  


  ffmpeg -i input.mkv -map 0:v:0
-map 0:a:2 -map 0:a:0 -map 0:a:1 -map 0:a:3
-map 0:s -c copy
-disposition:a:0 default
reordered.mp4


  


  It takes a lot of time to do all this work with a lot of files. it would be great to delegate it to a machine.

  


• Web page with script

  28 avril 2017, par Peter

  please be patient with me, I have never been very much into the coding (only at the university just a little) but here is one thing I would love to have. I havent done any research before asking before I dont even know what to search for :) but here is what I would like to do :

  I have synology device with multicast TV stream connected to it. I have installed ffmpeg and everytime I want to record a TV show I have to do it from CLI so I was thinking it would be nice to run this ffmpeg from the web page. I mean I would click the TV channel from the drop down menu, set the name of a file, set the time and click RUN and then the command (ffmpeg -i http://MULTICAST_STREAM-variable -acodec copy -vcodec copy /var/services/homes/xxx/NAME_OF_TV_SHOW.mpg) will execute on my synology...Is something like this possible ? (I hope it is)...What exactly should I search for ?

  Thank you very much