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• Youtube-dl convert to MP3 multi cores [on hold]

  1er janvier 2017, par Top Games a-Z

  Do you know how to tell to youtube-dl to use all cpu cores when convert music (using ffmpeg) to mp3 ? Because it downloads the song but when it has to convert it uses just one core. Thank you.

• FFMPEG YouTube Live Too Fast

  6 avril 2017, par Liam Martens

  So I am streaming video and audio to YouTube as follows

  THE CONTEXT

  1. First I convert a graphic GIF to an MP4 file

  ffmpeg -f gif -i graphic.gif -c:v libx264 -pix_fmt yuv420p -vf scale=1280:-1 temp.mp4

  2. Then I overlay a PNG with text over the MP4

  ffmpeg -i temp.mp4 -i overlay.png -filter_complex "overlay=10:10" '.$graphicsPath.'/graphic.mp4

  3. Then I start the stream the video and combine it with audio using following code (sources.txt is just a concat list *)

  ffmpeg -f concat -i sources.txt -i music.mp3 \
  
      -c:v libx264 -c:a aac -shortest -deinterlace \
  
      -pix_fmt yuv420p -preset '.$encoding.' -r 30 -g 60 -b:v 2500k \
  
      -acodec libmp3lame -ar 44100 -threads 6 -qscale 3 -b:a 712000 \
  
      -maxrate 800k -bufsize 1400k \
  
      -f flv rtmp://a.rtmp.youtube.com/live2/KEY

  4. After the stream ends, the code starts over again with a new song to mimic a 247 stream.

  THE ISSUE

  So the issue I am having is that it appears to be streaming too fast. It’s like the opposite of buffering issues where the buffer is way too long (as in a full song buffered by the time the first one has finished if you open the stream)

  Does anyone know how I could throttle the output ? I have tried with maxrate and bufsize but no real result.

  * sources.txt example
  file ’graphic.mp4’
  file ’graphic.mp4’
  file ’graphic.mp4’
  file ’graphic.mp4’
  file ’graphic.mp4’
  file ’graphic.mp4’
  and so on

• Batch File : How can I make input videos to be sequentially named in same loop

  2 décembre 2022, par Ionut Bejinariu

  I end up with the code in this form.

  


  the first ffmpeg .. its working alone but not inside the second For 
that's why I made a second one, also I did this because I need to increment the Videos-*
to be be Videos-1.mp4, Videos-2.mp4 ... Videos-99.mp4 , all the videos are in %videodir% named like this.

  


  I tried also "%videodir%\Videos-%d.mp4" also "%videodir%\*.mp4" for videos to be sequentially named loop after loop, but not worked for me.

  


  @echo off
setlocal enabledelayedexpansion
 
set "musicdir=F:\MONTAJ VIDEO\video-simplu\MUZICA-wav-mp3"  
set "videodir=F:\LUCRU-VIDEO\primele-15sec"  
set "exportdir=E:\Export-yt-shorts

for /l %%c in (1,1,2200) Do (
 
  ffmpeg -i "%videodir%\Videos-%%c.mp4" -i "%videodir%\Videos-%%c.mp4" -filter_complex "[0:v]scale=3413:1920,boxblur=4[bg];[1:v]scale=1080:-1[fg];[bg][fg]overlay=(W-w)/2:(H-h)/2[tmp];[tmp]crop=1080:1920:(3413-1080)/2:0[out]" -map [out] -map 0:a output01.mp4
 
)

    for %%A in ("%musicdir%\*") DO (
   ffmpeg -i output01.mp4 -i "%%A" -map 0:v -map 1:a -vcodec copy -c:a aac -b:a 320k -shortest "%exportdir%\%%~nA.mp4"
    del output01.mp4
 )




  


  Can anyone help me on this ? Thank you
Later Edit :
I want to explain the logic I thought about the two FOR

  


  I have two folders.
— 1 folders with mp4 videos wide ratio 16/9 Full HD

  


  are named like this ---> Videos-1.mp4, Videos-2.mp4 .. Videos-3.mp4 ... Videos-2200.mp4

  


  and 1 folder with music mp3 and wav's

  


  in first for its first mp4 export that I want to combine with first song from the second for then second video with second song from folder. etc

  


  in the end I want to have 9/16 ratio video