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• Timelimit plays for twice the duration [on hold]

  26 septembre 2019, par the_new_james

  I am using the following command to stream to a test an endpoint :

  ffmpeg -loglevel debug -f lavfi -re -i testsrc=size=hd720:rate=30 
  
         -f lavfi -re -i anoisesrc 
  
         -vf "drawtext=fontfile=\'/Library/Fonts/Arial.ttf\': text=\'Local time %{localtime\: %Y\/%m\/%d %H.%M.%S} (%{n})\': x=50: y=50: fontsize=48: fontcolor=white: box=1: boxcolor=0x00000099" 
  
         -pix_fmt yuv420p -c:v libx264 -b:v 1000k -g 30 -profile:v baseline -preset veryfast 
  
         -c:a libfdk_aac -b:a 96k -timelimit 60 -f flv $RTMP_OUTPUT/$NAME

  Because I’m adding this command to my automation, I would like to protect it from running indefinitely in case something goes wrong with my script (I start the ffmpeg job in a background process that is detached from the script). Therefore, I added the flag -timelimit 60, that, according to the documentation, the job should exit after duration seconds.

  I can see that the command is being parsed correctly

  Reading option '-timelimit' ... matched as option 'timelimit' (set max runtime in seconds) with argument '60'.
  
  ...
  
  Finished splitting the commandline.
  
  ...
  
  Applying option timelimit (set max runtime in seconds) with argument 60.
  
  ...

  Here’s an example output

  

  The issue is that I noticed that the stream runs for longer than the specified time. After a couple of tests, I noticed that it is running for double the time, which got me thinking if it is taking the number of frames (assuming 2-second frames).

  Can someone clarify the timelimit option, please ? And the possible causes for running longer than specified.

  PS : I’m using ffmpeg version 4.1.4 on a MAC OS Mojave (10.14.6)

• ffmpeg concat loses audio after first clip only in browser, audio plays good on player like vlc etc

  1er octobre 2019, par Rajan Tpss

  i am trying to combine or concatenate audio file one after other like after concatenation of two audio files, both file will downloaded as a single file wheres audio will be played in a queue one after other.

  after some research i found the package FFmpeg i.e dealt with mp3,mp4 etc files.i tried to run FFmpeg commands in terminal but file is created and playing good on VLC but not playing accurately in browser.

  Some Commands tried by me in terminal are as follow :-

  ffmpeg -i "concat:a.mp3|b.mp3" -acodec copy output.mp3

  ffmpeg -f concat -i files.txt -c copy output.mp3

  ffmpeg -i a.mp3 -i b.mp3 -filter_complex "[0:v:0] [0:a:0] [1:v:0] [1:a:0] concat=n=2:v=0:a=1 [v] [a]" -map "[v]" -map "[a]" output.mp3

  ffmpeg -y -i "concat:a.mp3|b.mp3" -ar 22050 -ab 512 -b 800k -f mp4 -s 514*362 -strict -2 -c:a aac "OUTPUT.mp4"

  Library Link followed by me :- https://ffmpeg.org/ffmpeg-filters.html

  Note :- I am using Ubuntu based system

  file is created successfully from above commands and playing well on VLC player.

  where in browser first clip is playing well but after first clip browser stops. somehow second audio clip is not playing in browser. i don’t know why may be there is same kind of pattern error.

  if anyone can help, i shall be very thankful to him/her.

  Thanks

• pyglet_ffmpeg loads and plays video in script(.py) but not loading(media load) in executable

  24 février 2020, par Mahesh Dilip Salvi

  i am playing full screen video in pyglet application which just plays video as follows, the script(.py) file loads mp4 video(as mediaload) and plays it well (windowed/fullscreen) but after making it executable with pyinstaller command (pyinstaller -w -F .\videoPlay.py) it is not loading media.
  *i identified it with ’try-except’ block with help of ctypes.MessageBox
  Please assist me by checking following thing.

  import pyglet, pyglet_ffmpeg
  
  
  
  pyglet_ffmpeg.load_ffmpeg()
  
  
  
  vidPath = 'm2Vid.mp4'
  
  
  
  window = pyglet.window.Window() #fullscreen=True
  
  player = pyglet.media.Player()
  
  source = pyglet.media.StreamingSource()
  
  MediaLoad = pyglet.media.load(vidPath)
  
  player.on_player_eos = window.close
  
  
  
  player.queue(MediaLoad)
  
  player.play()
  
  
  
  @window.event
  
  def on_draw():
  
      if player.source and player.source.video_format:
  
          player.get_texture().blit(0,0)
  
  
  
  pyglet.app.run()