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• ffmpeg stream encoding out produce a stream shows different program on each start

  15 octobre 2018, par Ryan Philip

  I am using ffmpeg for almost one year, my stream recently started behaving badly.

  The lines on ffmpeg screen started running crazy fast when restreaming it, causing more CPU (with no encoding). I have mapped the stream to select only one stream. But the problem is even with mapping I am getting different program each time when it is played.

  Also each program it is playing for less than a minute. There is no specific error message showing on ffmpeg screen. Only the output is behaving badly.

  I even tried ffmpeg version 3.3, 3.4 and 4.0 with same results.

  It has so many resolution streams, so i selected only 33 (video) and 34 (audio), the ones with highest resolution.

  ffmpeg -i "http://insourceip/stream.m3u8" -err_detect explode  -c copy -map 0:33? -map 0:34?  -hls_time 10 -hls_list_size 6 -hls_wrap 10 -start_number 1 out/music.m3u8

  Please help me with this.

  Below is the output : the one after (No longer receiving playlist 8) start running crazy when started.

  Program 11
  
      Metadata:
  
        variant_bitrate : 1088000
  
      Stream #0:33: Video: h264 (Constrained Baseline) ([27][0][0][0] / 0x001B), yuv420p, 640x480 [SAR 12:11 DAR 16:11], 25 fps, 25 tbr, 90k tbn, 50 tbc
  
      Metadata:
  
        variant_bitrate : 1088000
  
      Stream #0:34: Audio: aac (LC) ([15][0][0][0] / 0x000F), 32000 Hz, stereo, fltp
  
      Metadata:
  
        variant_bitrate : 1088000
  
      Stream #0:35: Data: timed_id3 (ID3  / 0x20334449)
  
      Metadata:
  
        variant_bitrate : 1088000
  
  [hls @ 0x7a64120] Opening '/music1.ts' for writing
  
  Output #0, hls, to '/music.m3u8':
  
    Metadata:
  
      encoder         : Lavf57.71.100
  
      Stream #0:0: Video: h264 (Constrained Baseline) ([27][0][0][0] / 0x001B), yuv420p, 640x480 [SAR 12:11 DAR 16:11], q=2-31, 25 fps, 25 tbr, 90k tbn, 25 tbc
  
      Metadata:
  
        variant_bitrate : 1088000
  
      Stream #0:1: Audio: aac (LC) ([15][0][0][0] / 0x000F), 32000 Hz, stereo, fltp
  
      Metadata:
  
        variant_bitrate : 1088000
  
      Stream #0:2: Data: timed_id3 (ID3  / 0x20334449)
  
      Metadata:
  
        variant_bitrate : 1088000
  
  Stream mapping:
  
    Stream #0:33 -> #0:0 (copy)
  
    Stream #0:34 -> #0:1 (copy)
  
    Stream #0:35 -> #0:2 (copy)
  
  Press [q] to stop, [?] for help
  
  [hls,applehttp @ 0x3d57120] No longer receiving playlist 10
  
  [hls,applehttp @ 0x3d57120] No longer receiving playlist 1
  
  [hls,applehttp @ 0x3d57120] No longer receiving playlist 3
  
  [hls,applehttp @ 0x3d57120] No longer receiving playlist 5
  
  [hls,applehttp @ 0x3d57120] No longer receiving playlist 7
  
  [hls,applehttp @ 0x3d57120] No longer receiving playlist 9
  
  [hls,applehttp @ 0x3d57120] No longer receiving playlist 0
  
  [hls,applehttp @ 0x3d57120] No longer receiving playlist 2
  
  [hls,applehttp @ 0x3d57120] No longer receiving playlist 4
  
  [hls,applehttp @ 0x3d57120] No longer receiving playlist 6
  
  [hls,applehttp @ 0x3d57120] No longer receiving playlist 8
  
  ***[hls,applehttp @ 0x3d57120] Opening 'FORMATED/i/MUSIC_1@13394/segment153957897_1_av-b.ts' for reading
  
  [hls,applehttp @ 0x3d57120] Opening 'FORMATED/i/MUSIC_1@13394/segment153957898_1_av-b.ts' for reading
  
  [hls @ 0x7a64120] Opening '/music2.ts' for writing
  
  [hls @ 0x7a64120] Opening '/music.m3u8.tmp' for writing
  
  [hls,applehttp @ 0x3d57120] Opening 'FORMATED/i/MUSIC_1@13394/segment153957899_1_av-b.ts' for reading
  
  [hls @ 0x7a64120] Opening '/music3.ts' for writing***

• 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"

• FFmpeg : Reading data from 2 FIFO

  21 septembre 2019, par user3497661

  I am working with FFmpeg 4.1.3. I am trying to read video from one named pipe and audio from another named pipe and creating a new output file. There are 2 RTP processes reading data over the network and writing it to these pipes.

  I am using following commandline
  ffmpeg -report -i /tmp/audio_pipe.pcmu -i /tmp/video_pipe.h264 -y output.ts
  When I try to receive from individual pipes,
  (ffmpeg -report -i /tmp/audio_pipe.pcmu -y output.ts), it works but using 2 pipes in the same command line seems to block.
  I found some 7 year old ticket https://trac.ffmpeg.org/ticket/1663. It says that multiple pipes do not work with FFmpeg.

  I would like to know if input using multiple pipes works with FFmpeg now and if yes, how to achieve it.