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• How to split streaming video into pieces FFMPEG

  17 juin 2019, par danilshik

  I have a bat script (Windows) for the library Livestreamer to record the broadcast in the video

  :loop
  
  
  
  set day=%DATE:~0,2%
  
  set month=%DATE:~3,2%
  
  set year=%DATE:~6,4%
  
  
  
  set hour=%TIME:~0,2%
  
  set minute=%TIME:~3,2%
  
  set second=%TIME:~6,2%
  
  
  
  set YYYYMMDD=%day%_%month%_%year%_%hour%_%minute%_%second%
  
  
  
  
  
  streamlink --hls-live-edge 99999 --hls-segment-threads 10 --ringbuffer-size 1024M -o %YYYYMMDD%.ts https://www.twitch.tv/silvername best
  
  goto loop

  How can I break this video into pieces ?

  I tried to do so, but it did not work, writes the error of the arguments

  ffmpeg -i "streamlink --hls-live-edge 99999 --hls-segment-threads 10 --ringbuffer-size 1024M -o %YYYYMMDD%.ts https://www.twitch.tv/manyrin best" -f segment -segment_time 1 -vcodec copy -acodec copy "%03d.ts"

• How can I merge these 2 FFmpeg commands ?

  7 juin 2019, par WebDev

  I have two commands which are part of a larger set of commands. Basically I need to merge these two into one command to speed things up.

  ffmpeg -y -f concat -safe 0 -protocol_whitelist "file,http,https,tcp,tls" -i "photos.txt" -i "mainscreen.png" -i "audio.mp3" -filter_complex "scale=3840x2160,zoompan=z='if(lte(zoom,1.0),1.2,max(1.001,zoom-0.0015))':x='iw/2-(iw/zoom/2)':y='ih/2-(ih/zoom/2)':s=1280x720:fps=15:d=120, overlay=(main_w-overlay_w)/2:(main_h-overlay_h)/2, drawtext=fontfile=font.otf:text='%%~ni':fontcolor=black:fontsize=32:x=90:y=582" -preset veryfast -tune stillimage -shortest -pix_fmt yuv420p "slideshow.mp4"
  
  
  
  ffmpeg -y -i "slideshow.mp4" -filter_complex "[0:a]showwaves=mode=cline:s=110x36:r=15:scale=sqrt:colors=0x222222,colorkey=0x000000:0.01:0.1,format=yuva420p[v];[0:v][v]overlay=77:444,scale=1280:720[outv]" -map "[outv]" -map 0:a -preset veryfast "done.mp4"

  Firstly creates a slideshow and adds text, then draws a showwaves effect onto the video.

  Update

  From Gyan’s response, and after tinkering for a while, it kind of works how I needed it to. It does what I wanted, but keeps throwing "depreciated pixel format" error. Here’s the updated command once I finished. What is the problem, and is the command written properly ?

  ffmpeg -y -f concat -safe 0 -protocol_whitelist "file,http,https,tcp,tls" -i "images.txt" -i "screen.png" -i "audio.mp3" -filter_complex "scale=3840x2160,zoompan=z='if(lte(zoom,1.0),1.2,max(1.001,zoom-0.0015))':x='iw/2-(iw/zoom/2)':y='ih/2-(ih/zoom/2)':s=1280x720:fps=15:d=120, overlay=(main_w-overlay_w)/2:(main_h-overlay_h)/2, drawtext=fontfile=Assets/Fonts/font.otf:text='%%~ni':fontcolor=black:fontsize=32:x=90:y=582[v];[2:a]showwaves=mode=cline:s=110x36:r=15:scale=sqrt:colors=0x222222,colorkey=0x000000:0.01:0.1,format=yuva420p[w];[v][w]overlay=77:444,scale=1280:720[outv]" -map "[outv]" -map 2:a -c:v libx264 -c:a aac -preset veryfast -shortest -pix_fmt yuv420p "done.mp4"

  Second update

  Thanks to Gyan for helping me better understand the command. Here is the final code which does what I need :

  ffmpeg -y -f concat -safe 0 -protocol_whitelist "file,http,https,tcp,tls" -i "images.txt" -i "screen.png" -i "tmp.audio.mp3" -filter_complex "[0]scale=3840x2160,zoompan=z='if(lte(zoom,1.0),1.2,max(1.001,zoom-0.0015))':x='iw/2-(iw/zoom/2)':y='ih/2-(ih/zoom/2)':s=1280x720:fps=15:d=120, overlay=(main_w-overlay_w)/2:(main_h-overlay_h)/2, drawtext=fontfile=font.otf:text='%%~ni':fontcolor=black:fontsize=32:x=90:y=582[v];[2:a]showwaves=mode=cline:s=110x36:r=15:scale=sqrt:colors=0x222222,colorkey=0x000000:0.01:0.1,format=yuva420p[w];[v][w]overlay=77:444,scale=1280:720[outv]" -map "[outv]" -map 2:a -preset veryfast -shortest -pix_fmt yuv420p "done.mp4"

  Only change from Gyan’s code is I removed [p] ;[1][p] and replaced with a comma to achieve what I needed. Seems to work perfect now, ignoring the depreciated pixels warning.

• ffmpeg : corrupted video when using a different source image

  1er février 2017, par Sulli

  I am using the exact same command on two different images, to create a zoom in effect :

  ffmpeg -r 25 -i image1.jpg -filter_complex "scale=-2:10*ih,zoompan=z='min(zoom+0.0015,1.5)':d=125:x='iw/2-(iw/zoom/2)':y='ih/2-(ih/zoom/2)',scale=-2:720" -y -shortest -c:v libx264 test1.mp4

  With image1.jpg, the video output is fine, but with image2.jpg it seems to be corrupted : although I can read the output video in VLC, I don’t see its thumbnail under Windows, and Adobe Premiere can’t read this file in the timeline.

  The two images are jpg downloaded from the web, and they both have the same ratio.

  What I am missing ?