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• Creating a simulated HLS live stream from multiple MP4 sources with ffmpeg

  27 janvier 2017, par Navid Gharib

  I’ve already tried to create HLS stream from a UDP continuous input stream, it was fairly easy, now I want to create a simulated live HLS stream from multiple MP4 sources with ffmpeg, the idea behind it is to be able to create a TV channel with non-live data, so the input must be a loop of non-live data to simulate live stream continuity. I tried to do it with the below command but after the first round, ffmpeg exits with this error :

  concat:1.mp4|2.mp4|3.mp4" Resource temporarily unavailable.

  ffmpeg command :

  ffmpeg -i "concat:1.mp4|2.mp4|3.mp4" -strict experimental -sn  -ac  2  -map_metadata  -1  -s  720x576  -g  250  -c:v  libx264  -pix_fmt  yuv420p  -flags  -global_header  -hls_time  10  -hls_list_size  5  -hls_wrap  12  -hls_flags  delete_segments  -f  hls  -strftime  1  -segment_time  10  -segment_format  mpegts  -segment_list_flags  +live  -hls_allow_cache  0  -segment_wrap  12  -segment_list_size  5  -hls_base_url  http://192.168.1.100/0/  -hls_segment_filename  /data/0/live_0_%02d.ts  /data/0/live_0.m3u8

  If anyone has a nice solution to this issue, I would appreciate any input.

  Cheers,
  Navid

• Restart ffmpeg process using monit if TOTAL CPU is less than 1%

  15 mai 2017, par user2201239

  I have used kind of similar solution like this Restarting ffmpeg process using monit to restart my ffmpeg stream in case it fails for some reason. Remember its not duplicate problem/question, because I have other issues unlike the example question/solution Restarting ffmpeg process using monit, which I’m gonna explain below. So here is my monit configuration :

      check process FFMPEGStream with pidfile PATH-to-file/streampid.pid
  
      start program = "PATH-to-file/streambash.sh restart"
  
      stop program = "PATH-to-file/streambash.sh stop"
  
      if TOTAL CPU is less than 1% for 10 cycles then restart

  Here is my streambash.sh file :

      #!/bin/bash
  
      pid_file="PATH-to-file/streampid.pid"
  
  
  
      case "$1" in
  
       restart)
  
          PATH-to-file/streambash.sh stop
  
          PATH-to-file/streambash.sh start
  
             ;;
  
  
  
       start)
  
          rm $pid_file
  
          /usr/bin/ffmpeg -i "INPUT-PATH" -c:v libx264 -b:v 900k -preset ultrafast -aspect 16:9 -s 640x376 -strict experimental -c:a aac -b:a 96k -f flv "RTMP-PATH" &> /dev/null &
  
          ch_pid=$! 
  
          echo "Start Stream1: ffmpeg = $ch_pid";
  
          echo $ch_pid > $pid_file
  
             ;;
  
  
  
       stop)
  
          echo "Stop ffmpeg Stream1";
  
          kill `cat $pid_file` &> /dev/null
  
             ;;
  
  
  
       *)
  
          echo "Usage: PATH-to-file/streambash.sh {start|stop|restart}"
  
          exit 1
  
             ;;
  
  
  
       esac
  
      exit 0
  
      echo $pid_file

  Monit can start the bash file successfully, but when this condition "if TOTAL CPU is less than 1% for 10 cycles then restart" is matched in monit configuration, it tries to restart, it gives error that process is not running. But in actual the ffmpeg process still runs in the background and I can see that the stream is live on my website. Here is monit logs :

      [CET Jan 10 12:55:02] error    : 'FFMPEGStream' total cpu usage of 0.4% matches resource limit [cpu usage>1.0%]
  
      [CET Jan 10 12:55:07] error    : 'FFMPEGStream' total cpu usage of 0.0% matches resource limit [cpu usage>1.0%]
  
      [CET Jan 10 12:55:12] error    : 'FFMPEGStream' total cpu usage of 0.0% matches resource limit [cpu usage>1.0%]
  
      [CET Jan 10 12:55:17] error    : 'FFMPEGStream' total cpu usage of 0.4% matches resource limit [cpu usage>1.0%]
  
      [CET Jan 10 12:55:22] error    : 'FFMPEGStream' total cpu usage of 0.9% matches resource limit [cpu usage>1.0%]
  
      [CET Jan 10 12:55:27] error    : 'FFMPEGStream' total cpu usage of 0.9% matches resource limit [cpu usage>1.0%]
  
      [CET Jan 10 12:55:32] error    : 'FFMPEGStream' total cpu usage of 0.0% matches resource limit [cpu usage>1.0%]
  
      [CET Jan 10 12:55:37] error    : 'FFMPEGStream' total cpu usage of 0.0% matches resource limit [cpu usage>1.0%]
  
      [CET Jan 10 12:55:42] error    : 'FFMPEGStream' total cpu usage of 0.0% matches resource limit [cpu usage>1.0%]
  
      [CET Jan 10 12:55:47] error    : 'FFMPEGStream' total cpu usage of 0.4% matches resource limit [cpu usage>1.0%]
  
      [CET Jan 10 12:55:50] info     : 'FFMPEGStream' trying to restart
  
      [CET Jan 10 12:55:50] info     : 'FFMPEGStream' stop: PATH-to-file/streambash.sh
  
      [CET Jan 10 12:55:51] info     : 'FFMPEGStream' start: PATH-to-file/streambash.sh
  
      [CET Jan 10 12:55:56] error    : 'FFMPEGStream' process is not running
  
      [CET Jan 10 12:55:58] info     : 'FFMPEGStream' trying to restart
  
      [CET Jan 10 12:55:58] info     : 'FFMPEGStream' start: PATH-to-file/streambash.sh
  
      [CET Jan 10 12:56:04] error    : 'FFMPEGStream' process is not running
  
      [CET Jan 10 12:56:04] info     : 'FFMPEGStream' trying to restart
  
      [CET Jan 10 12:56:04] info     : 'FFMPEGStream' start: PATH-to-file/streambash.sh
  
      [CET Jan 10 12:56:09] error    : 'FFMPEGStream' process is not running
  
      [CET Jan 10 12:56:09] info     : 'FFMPEGStream' trying to restart
  
      [CET Jan 10 12:56:09] info     : 'FFMPEGStream' start: PATH-to-file/streambash.sh

  Monit keeps trying to restart the process and on each retry, it dumps a new pid to the PATH-to-file/streampid.pid, but as I said it seems, it somehow can stop the actual ffmpeg stream/pid, which keep running in the background.

• avdevice/dshow : Cleanup also on av_log case

  26 mai 2024, par Michael Niedermayer

  avdevice/dshow : Cleanup also on av_log case
  Fixes : CID1598550 Resource leak
  Sponsored-by : Sovereign Tech Fund
  
  Reviewed-by : Roger Pack <rogerdpack@gmail.com>
  
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libavdevice/dshow.c