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• How to broadcast video to Vimeo stably by using ffmpeg ? [closed]

  5 octobre 2022, par akrsum

  I'm trying to broadcast video to Vimeo by using ffmpeg to broadcast from headless linux. Seemingly I can broadcast and video has no problem, but when I see analyzer, receiving bitrate is not stable.

  


  

  


  Nonetheless, ffmpeg always report stable bitrate.

  


  Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame=  375 fps= 30 q=-1.0 size=    7840kB time=00:00:12.40 bitrate=5178.8kbits/s speed=   1x


  


  If I broadcast video from my laptop by using OBS, the analyzer shows stable connection.

  


  

  


  Here is a command I tried. Is there some problem ?

  


  ffmpeg -re -i  -codec copy -threads 4 -f flv /


  


• using ffmpeg to process webcam data and save it in multiple files

  21 septembre 2017, par Deepak Nellurvalappil

  I am trying to process streaming video data from a usb webcam using ffmpeg. the process involves encoding the raw data into hevc format. Upto this point I am able to do.
  But now, I want to slice the processed data in chunks of 10 seconds and save it in a separate file. This should repeat until I kill/interrupt the process manually.

  ffmpeg -i /dev/video1 -f segment -segment_times 10 -c:v hevc cam_1_%02d.mp4

  the above code does create multiple files but only the first file is readable using vlc ; other files look corrupt.

  And while I was running the command, I could see the following messages :-

  Stream mapping:  Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264)) Press [q] to stop, [?] for help Past duration 0.601555 too largeN/A time=00:00:14.63 bitrate=N/A dup=11 drop=0      Past duration
  
  0.601463 too large Past duration 0.601555 too largeN/A time=00:00:15.16 bitrate=N/A dup=11 drop=0     Past duration 0.601585 too large
  
      Last message repeated 1 times Past duration 0.601646 too large Past duration 0.601677 too large Past duration 0.601707 too largeN/A time=00:00:15.66 bitrate=N/A dup=11 drop=0

  What am I missing here ?

• How to fix "FFmpeg command cannot exec when multiple mp3 file to process into one" on server side

  7 février 2019, par Harshil Dholakiya

  I am using FFmpeg in my php yii2 project. FFmpeg working fine in my project but one major problem is execute FFmpeg command with multiple input file. When i try to use single file to process in ffmpeg command then it works. so, how can i fix this problem ? I am using hostGator shared plan for my project. Please, help if is there any process limit or file open limit on server that i don’t know.

  I have tried using this command in php exec() :

  ffmpeg -y -i /uploads/ac/10122018-09351115-a94rlvlawvikskb4vdrca.mp3 -i /uploads/ac/09012019-035928988-assknyrk8oujccwevir7.mp3 -f lavfi -i anullsrc -filter_complex "[2]atrim=duration=3[g0];[2]atrim=duration=1[g1];[2]atrim=duration=5[g2];[g0][0][g1][1][g2]concat=n=5:v=0:a=1" /uploads/jm/concat.mp3 2>&1

  Above command works local side but not working on server side.

  output on server side with error code 1:
  
  Press [q] to stop, [?] for help
  
  pthread_create failed: Resource temporarily unavailable. Try to increase `ulimit -v` or decrease `ulimit -s`.
  
  Conversion failed!