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• Anomalie #4402 (Fermé) : Liste de notices

  12 février 2021, par cedric -

  je ferme ce ticket, car un ticket qui référence un wiki qui liste des patches, ça commence à ressembler à un jeu de pistes
  + depuis novembre 2019 ces notices ont été corrigée
  + maintenant proposer une PR pour chaque cas quand on tombe dessus ça sera beaucoup plus efficace

• The proper way to limit framerate when recording screen on macOS

  5 juillet 2024, par jsx

  macOS 14.5, FFmpeg 7.0.1. To record the screen, if I use the code from Wiki, that is,

  


  ffmpeg -f avfoundation -i 1 output.mp4


  


  the frame rate seems to be so high that when I press q to stop recording, the following message persists until my MacBook Pro starts to noise by its cooler : "[q] command received. Exiting."

  


  My current solution is to add -r after -i :

  


  ffmpeg -f avfoundation -i 1 -r 24 output.mp4


  


  But I heard that a more correct solution is to replace -r with -framerate and to put it before instead of after -i :

  


  


  ffmpeg -f avfoundation -framerate 24 -i 1 output.mp4


  


  Note that I used -framerate as an input option instead of -r 24 as an output option, so I'm telling avfoundation to record at 24fps instead of recording at the default fps and then forcing FFmpeg to drop or duplicate frames to give you the desired 24.

  


  


  This doesn't work for me currently, and appears to be the same as I don't use -r at all.

  


  And so, what is the proper way to fix the "too high framerate" issue when recording the screen on macOS ? Do we need -r or instead -framerate, and where to put it, before or after -i ?

  


  Just in case, here is the log of ffmpeg -f avfoundation -i 1 output.mp4 -v verbose :

  


  https://github.com/jsx97/test/blob/main/ffmpeg.log

  


• want to stream mobile camera using ffserver and ffmpeg

  6 janvier 2017, par Vinay Pandya

  First i will tell you my requirement than i will tell you what i have done.

  i am noob in media streaming i am learning and i am very confused about it.

  basically i want to do following thing

  1 : mobile app will stream video on server through URL (which is on my laptop)
  2 : My laptop should run ffserver/ffmpeg which store video stream which is coming from mobile app and allow other client to watch it (here i am talking about VLC as client).

  so this is my requirement.

  i ham running ffserver on my laptop

  my ff server config is like :

  HTTPPort 8090
  
  HTTPBindAddress 0.0.0.0
  
  
  
  RTSPPort 8091
  
  RTSPBindAddress 0.0.0.0
  
  
  
  
  
  MaxHTTPConnections 2000
  
  MaxClients 1000
  
  MaxBandwidth 1000
  
  CustomLog -
  
  
  
  #NoDaemon
  
  
  
  <feed>
  
      File /tmp/feed1.ffm
  
      FileMaxSize 200K
  
      ACL allow 127.0.0.1
  
  </feed>
  
  
  
  # if you want to use mpegts format instead of flv
  
  # then change "live.flv" to "live.ts"
  
  # and also change "Format flv" to "Format mpegts"
  
  <stream>
  
      Format flv
  
      Feed feed1.ffm
  
  
  
      VideoCodec libx264
  
      VideoFrameRate 30
  
      VideoBitRate 512
  
      VideoSize 320x240
  
      AVOptionVideo crf 23
  
      AVOptionVideo preset medium
  
      # for more info on crf/preset options, type: x264 --help
  
      AVOptionVideo flags +global_header
  
  
  
      AudioCodec aac
  
      Strict -2
  
      AudioBitRate 128
  
      AudioChannels 2
  
      AudioSampleRate 44100
  
      AVOptionAudio flags +global_header
  
  </stream>
  
  
  
  ##################################################################
  
  # Special streams
  
  ##################################################################
  
  <stream>
  
      Format status
  
      # Only allow local people to get the status
  
      ACL allow localhost
  
      ACL allow 192.168.0.0 192.168.255.255
  
  </stream>
  
  
  
  # Redirect index.html to the appropriate site
  
  <redirect>
  
      URL http://www.ffmpeg.org/
  
  </redirect>
  
  ##################################################################

  than i am adding following url to my mobile app to stream video.
  rtsp ://:8091/feed1.ffm
  my mobile app start streaming my mobile developer team said that.
  but i am not getting any log on ffserver, when i am stooping streaming the TEARDOWN request is comming

  [TEARDOWN] "rtsp://192.168.1.57:8091/feed1.ffm RTSP/1.0" 200 7034

  i have done this is so far, i dont know how to use ffmpeg with live streaming. please tell me some example for that.

  i am not able to watch that live stream on VLC client. also tell me what URL should i enter in VLC for streaming i have tried almost every url combination.

  and one more thing i want to do it with RTSP protocol.

  i think this info will help you to understand my requirement.