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• FFmpeg : avconv and ffserver - connection reset by peer

  5 mars 2016, par einsA

  I’m trying to stream a video via ffserver. My dev environment is a Raspberry Pi 2.

  I’m getting an av_interleaved_write_frame(): Connection reset by peer with the following approach :

  pi@raspberrypi:/opt/livefeed $ avconv -f mjpeg -i movie.mjpg -r 20 -b 2000k -vcodec libx264 -preset ultrafast -f flv -metadata streamName="mjpeg_to_flv" -metadata title="converting mjpeg to flv via avconv" http://localhost:8090/feed1.ffm
  
  avconv version 11.4-6:11.4-1~deb8u1+rpi1, Copyright (c) 2000-2014 the Libav developers
  
    built on Jun 16 2015 05:32:34 with gcc 4.9.2 (Raspbian 4.9.2-10)
  
  [mjpeg @ 0x20461e0] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, mjpeg, from 'movie.mjpg':
  
    Duration: N/A, bitrate: N/A
  
      Stream #0.0: Video: mjpeg, yuvj422p, 768x512, 25 fps, 25 tbn
  
  [tcp @ 0x2050bc0] Connection to tcp://localhost:8090 failed (Connection refused), trying next address
  
  [libx264 @ 0x20501a0] using cpu capabilities: none!
  
  [libx264 @ 0x20501a0] profile Constrained Baseline, level 3.0
  
  [libx264 @ 0x20501a0] 264 - core 142 r2431 a5831aa - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=20 scenecut=0 intra_refresh=0 rc=abr mbtree=0 bitrate=2000 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0
  
  Output #0, flv, to 'http://localhost:8090/feed1.ffm':
  
    Metadata:
  
      streamName      : mjpeg_to_flv
  
      title           : converting mjpeg to flv via avconv
  
      encoder         : Lavf56.1.0
  
      Stream #0.0: Video: libx264, yuv420p, 768x512, q=-1--1, 2000 kb/s, 20 fps, 1k tbn, 20 tbc
  
      Metadata:
  
        encoder         : Lavc56.1.0 libx264
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
  
  Press ctrl-c to stop encoding
  
  av_interleaved_write_frame(): Connection reset by peer0000.00 bitrate=   0.0kbits/s

  ---

  I am able to stream the file doing it step by step with the following settings and commands :

  ffserver

  ffserver config :

  pi@raspberrypi:/opt/livefeed $ cat ffserver_flv.conf 
  
  # FLV live feed
  
  
  
  Port 8090
  
  BindAddress 0.0.0.0
  
  MaxHTTPConnections 2000
  
  MaxClients 1000
  
  MaxBandwidth 1000
  
  CustomLog -
  
  
  
  <stream>
  
    Format status
  
    ACL allow localhost
  
    ACL allow 192.168.0.0 192.168.255.255
  
  </stream>
  
  
  
  <feed>
  
    File /tmp/feed_flv.ffm
  
    FileMaxSize 1G
  
    ACL allow 127.0.0.1
  
  </feed>
  
  
  
  <stream>
  
    Format flv
  
    Feed feed1.ffm
  
  
  
    VideoCodec libx264
  
    VideoFrameRate 30
  
    VideoBitRate 800
  
    VideoSize 720x576
  
    AVOptionVideo crf 23
  
    AVOptionVideo preset medium
  
    AVOptionVideo me_range 16
  
    AVOptionVideo qdiff 4
  
    AVOptionVideo qmin 10
  
    AVOptionVideo qmax 51
  
    AVOptionVideo flags +global_header
  
  
  
    NoAudio
  
  </stream>

  starting the server with :

  pi@raspberrypi:/opt/livefeed $ ffserver -v debug -f ffserver_flv.conf
  
  ffserver version N-78909-gfb2f164 Copyright (c) 2000-2016 the FFmpeg developers
  
    built with gcc 4.9.2 (Raspbian 4.9.2-10)
  
    configuration: --arch=armel --target-os=linux --enable-gpl --enable-libx264 --enable-nonfree --enable-libass --enable-libfaac --enable-libmp3lame --enable-libfreetype
  
    libavutil      55. 19.100 / 55. 19.100
  
    libavcodec     57. 27.101 / 57. 27.101
  
    libavformat    57. 28.100 / 57. 28.100
  
    libavdevice    57.  0.101 / 57.  0.101
  
    libavfilter     6. 39.100 /  6. 39.100
  
    libswscale      4.  0.100 /  4.  0.100
  
    libswresample   2.  0.101 /  2.  0.101
  
    libpostproc    54.  0.100 / 54.  0.100
  
  ffserver_flv.conf:6: Port option is deprecated. Use HTTPPort instead.
  
  ffserver_flv.conf:7: BindAddress option is deprecated. Use HTTPBindAddress instead.
  
  ffserver_flv.conf:48: Setting default value for video bit rate tolerance = 200000. Use NoDefaults to disable it.
  
  ffserver_flv.conf:48: Setting default value for video rate control equation = tex^qComp. Use NoDefaults to disable it.
  
  ffserver_flv.conf:48: Setting default value for video max rate = 49537952. Use NoDefaults to disable it.
  
  ffserver_flv.conf:48: Setting default value for video buffer size = 1600000. Use NoDefaults to disable it.
  
  Sat Mar  5 13:29:46 2016 [file @ 0x2f3d0d0]Setting default whitelist 'file'
  
  Sat Mar  5 13:29:46 2016 [ffm @ 0x2f40bc0]Format ffm probed with size=2048 and score=101
  
  Sat Mar  5 13:29:46 2016 [NULL @ 0x2f43760]Setting entry with key 'time_base' to value '1/30'
  
  Sat Mar  5 13:29:46 2016 [NULL @ 0x2f43760]Setting entry with key 'b' to value '800000'
  
  Sat Mar  5 13:29:46 2016 [NULL @ 0x2f43760]Setting entry with key 'video_size' to value '720x576'
  
  Sat Mar  5 13:29:46 2016 [NULL @ 0x2f43760]Setting entry with key 'me_range' to value '16'
  
  Sat Mar  5 13:29:46 2016 [NULL @ 0x2f43760]Setting entry with key 'qdiff' to value '4'
  
  Sat Mar  5 13:29:46 2016 [NULL @ 0x2f43760]Setting entry with key 'qmin' to value '10'
  
  Sat Mar  5 13:29:46 2016 [NULL @ 0x2f43760]Setting entry with key 'qmax' to value '51'
  
  Sat Mar  5 13:29:46 2016 [NULL @ 0x2f43760]Setting entry with key 'flags' to value '+global_header'
  
  Sat Mar  5 13:29:46 2016 [NULL @ 0x2f43760]Setting entry with key 'bt' to value '200000'
  
  Sat Mar  5 13:29:46 2016 [NULL @ 0x2f43760]Setting entry with key 'rc_eq' to value 'tex^qComp'
  
  Sat Mar  5 13:29:46 2016 [NULL @ 0x2f43760]Setting entry with key 'maxrate' to value '1600000'
  
  Sat Mar  5 13:29:46 2016 [NULL @ 0x2f43760]Setting entry with key 'bufsize' to value '1600000'
  
  Sat Mar  5 13:29:46 2016 [AVIOContext @ 0x2f41450]Statistics: 32768 bytes read, 0 seeks
  
  Sat Mar  5 13:29:46 2016 FFserver started.

  avconv

  I’m converting a mjpeg movie (movie.mjpeg) via avconv to flv (movie.flv) :

  pi@raspberrypi:/opt/livefeed $ avconv -f mjpeg -i movie.mjpg -r 20 -b 2000k -vcodec libx264 -preset ultrafast -f flv -metadata streamName="mjpeg_to_flv" -metadata title="converting mjpeg to flv via avconv" movie.flv
  
  avconv version 11.4-6:11.4-1~deb8u1+rpi1, Copyright (c) 2000-2014 the Libav developers
  
    built on Jun 16 2015 05:32:34 with gcc 4.9.2 (Raspbian 4.9.2-10)
  
  [mjpeg @ 0x34f1e0] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, mjpeg, from 'movie.mjpg':
  
    Duration: N/A, bitrate: N/A
  
      Stream #0.0: Video: mjpeg, yuvj422p, 768x512, 25 fps, 25 tbn
  
  [libx264 @ 0x3591a0] using cpu capabilities: none!
  
  [libx264 @ 0x3591a0] profile Constrained Baseline, level 3.0
  
  [libx264 @ 0x3591a0] 264 - core 142 r2431 a5831aa - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=20 scenecut=0 intra_refresh=0 rc=abr mbtree=0 bitrate=2000 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0
  
  Output #0, flv, to 'movie.flv':
  
    Metadata:
  
      streamName      : mjpeg_to_flv
  
      title           : converting mjpeg to flv via avconv
  
      encoder         : Lavf56.1.0
  
      Stream #0.0: Video: libx264, yuv420p, 768x512, q=-1--1, 2000 kb/s, 20 fps, 1k tbn, 20 tbc
  
      Metadata:
  
        encoder         : Lavc56.1.0 libx264
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
  
  Press ctrl-c to stop encoding
  
  frame=   93 fps=  9 q=-1.0 Lsize=    1078kB time=4.60 bitrate=1919.3kbits/s    ts/s    
  
  video:1076kB audio:0kB other streams:0kB global headers:0kB muxing overhead: 0.201471%
  
  [libx264 @ 0x3591a0] frame I:1     Avg QP:19.00  size: 35978
  
  [libx264 @ 0x3591a0] frame P:92    Avg QP:21.43  size: 11574
  
  [libx264 @ 0x3591a0] mb I  I16..4: 100.0%  0.0%  0.0%
  
  [libx264 @ 0x3591a0] mb P  I16..4: 25.9%  0.0%  0.0%  P16..4: 53.6%  0.0%  0.0%  0.0%  0.0%    skip:20.5%
  
  [libx264 @ 0x3591a0] final ratefactor: 20.82
  
  [libx264 @ 0x3591a0] coded y,uvDC,uvAC intra: 28.9% 46.9% 18.2% inter: 33.7% 39.8% 2.8%
  
  [libx264 @ 0x3591a0] i16 v,h,dc,p: 29% 30% 28% 14%
  
  [libx264 @ 0x3591a0] i8c dc,h,v,p: 53% 26% 15%  7%
  
  [libx264 @ 0x3591a0] kb/s:1893.82

  send flv to ffserver

  pi@raspberrypi:/opt/livefeed $ ffmpeg -stream_loop -1 -i movie.flv http://localhost:8090/feed1.ffm
  
  ffmpeg version N-78909-gfb2f164 Copyright (c) 2000-2016 the FFmpeg developers
  
    built with gcc 4.9.2 (Raspbian 4.9.2-10)
  
    configuration: --arch=armel --target-os=linux --enable-gpl --enable-libx264 --enable-nonfree --enable-libass --enable-libfaac --enable-libmp3lame --enable-libfreetype
  
    libavutil      55. 19.100 / 55. 19.100
  
    libavcodec     57. 27.101 / 57. 27.101
  
    libavformat    57. 28.100 / 57. 28.100
  
    libavdevice    57.  0.101 / 57.  0.101
  
    libavfilter     6. 39.100 /  6. 39.100
  
    libswscale      4.  0.100 /  4.  0.100
  
    libswresample   2.  0.101 /  2.  0.101
  
    libpostproc    54.  0.100 / 54.  0.100
  
  Input #0, flv, from 'movie.flv':
  
    Metadata:
  
      streamName      : mjpeg_to_flv
  
      title           : converting mjpeg to flv via avconv
  
      encoder         : Lavf56.1.0
  
    Duration: 00:00:04.65, start: 0.000000, bitrate: 1898 kb/s
  
      Stream #0:0: Video: h264 (Constrained Baseline), yuv420p, 768x512, 2000 kb/s, 20 fps, 20 tbr, 1k tbn, 40 tbc
  
  [tcp @ 0x30d2920] Connection to tcp://localhost:8090 failed (Connection refused), trying next address
  
  [tcp @ 0x329a080] Connection to tcp://localhost:8090 failed (Connection refused), trying next address
  
  [libx264 @ 0x325fb30] using cpu capabilities: ARMv6 NEON
  
  [libx264 @ 0x325fb30] profile High, level 3.1
  
  [libx264 @ 0x325fb30] 264 - core 148 r2665 a01e339 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=10 qpmax=51 qpstep=4 vbv_maxrate=1600 vbv_bufsize=1600 crf_max=0.0 nal_hrd=none filler=0 ip_ratio=1.40 aq=1:1.00
  
  Output #0, ffm, to 'http://localhost:8090/feed1.ffm':
  
    Metadata:
  
      streamName      : mjpeg_to_flv
  
      title           : converting mjpeg to flv via avconv
  
      creation_time   : now
  
      encoder         : Lavf57.28.100
  
      Stream #0:0: Video: h264 (libx264), yuv420p, 720x576, q=10-51, 800 kb/s, 20 fps, 1000k tbn, 30 tbc
  
      Metadata:
  
        encoder         : Lavc57.27.101 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 1600000/0/800000 buffer size: 1600000 vbv_delay: -1
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  
  Press [q] to stop, [?] for help
  
  Past duration 0.999992 too large
  
      Last message repeated 2 times
  
  Past duration 0.999992 too large      4kB time=00:00:00.00 bitrate=N/A dup=5 drop=0 speed=   0x    
  
      Last message repeated 3 times
  
  Past duration 0.999992 too large      4kB time=00:00:00.00 bitrate=N/A dup=9 drop=0 speed=   
  
  [croped]    
  
  video:968kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 3.719636%
  
  [libx264 @ 0x325fb30] frame I:11    Avg QP:22.49  size: 13888
  
  [libx264 @ 0x325fb30] frame P:487   Avg QP:16.10  size:  1382
  
  [libx264 @ 0x325fb30] frame B:980   Avg QP:21.31  size:   168
  
  [libx264 @ 0x325fb30] consecutive B-frames: 11.0%  1.8%  0.4% 86.9%
  
  [libx264 @ 0x325fb30] mb I  I16..4: 11.5% 81.2%  7.3%
  
  [libx264 @ 0x325fb30] mb P  I16..4:  1.6%  5.0%  0.2%  P16..4: 12.0%  1.6%  0.7%  0.0%  0.0%    skip:79.0%
  
  [libx264 @ 0x325fb30] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  5.8%  0.1%  0.0%  direct: 0.0%  skip:94.1%  L0:55.3% L1:44.4% BI: 0.3%
  
  [libx264 @ 0x325fb30] 8x8 transform intra:75.4% inter:88.7%
  
  [libx264 @ 0x325fb30] coded y,uvDC,uvAC intra: 38.6% 48.2% 14.9% inter: 1.5% 2.3% 0.0%
  
  [libx264 @ 0x325fb30] i16 v,h,dc,p: 28% 32% 11% 28%
  
  [libx264 @ 0x325fb30] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 25% 21% 31%  3%  4%  4%  4%  4%  4%
  
  [libx264 @ 0x325fb30] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 25% 23%  4%  7%  5%  7%  4%  3%
  
  [libx264 @ 0x325fb30] i8c dc,h,v,p: 63% 20% 14%  4%
  
  [libx264 @ 0x325fb30] Weighted P-Frames: Y:1.6% UV:1.2%
  
  [libx264 @ 0x325fb30] ref P L0: 67.5% 11.6% 13.8%  6.8%  0.3%
  
  [libx264 @ 0x325fb30] ref B L0: 58.7% 40.4%  0.9%
  
  [libx264 @ 0x325fb30] ref B L1: 96.2%  3.8%
  
  [libx264 @ 0x325fb30] kb/s:160.83
  
  Exiting normally, received signal 2.

  On another machine I can open the flv-stream via VLC by opening the address http://ip.running.ffserver:8090/live.flv.

  So why does it works step by step via the movie.flv file and not directly ?

  What is the difference between

  • avconv -f mjpeg -i movie.mjpg -r 20 -b 2000k -vcodec libx264 -preset ultrafast -f flv -metadata streamName="mjpeg_to_flv" -metadata title="converting mjpeg to flv via avconv" movie.flv
    followed by
    ffmpeg -stream_loop -1 -i movie.flv http://localhost:8090/feed1.ffm and

  • avconv -f mjpeg -i movie.mjpg -r 20 -b 2000k -vcodec libx264 -preset ultrafast -f flv -metadata streamName="mjpeg_to_flv" -metadata title="converting mjpeg to flv via avconv" http://localhost:8090/feed1.ffm ? Why ends this command with a av_interleaved_write_frame(): Connection reset by peer ?

  ---

  Informations and logs

  • ffserver log (both times) :

    Sat Mar  5 13:54:08 2016 127.0.0.1 - - [POST] "/feed1.ffm HTTP/1.1" 200 4096

  • ffserver version

    pi@raspberrypi:/opt/livefeed $ ffserver -version
    
    ffserver version N-78909-gfb2f164 Copyright (c) 2000-2016 the FFmpeg developers
    
    built with gcc 4.9.2 (Raspbian 4.9.2-10)
    
    configuration: --arch=armel --target-os=linux --enable-gpl --enable-libx264 --enable-nonfree --enable-libass --enable-libfaac --enable-libmp3lame --enable-libfreetype
    
    libavutil      55. 19.100 / 55. 19.100
    
    libavcodec     57. 27.101 / 57. 27.101
    
    libavformat    57. 28.100 / 57. 28.100
    
    libavdevice    57.  0.101 / 57.  0.101
    
    libavfilter     6. 39.100 /  6. 39.100
    
    libswscale      4.  0.100 /  4.  0.100
    
    libswresample   2.  0.101 /  2.  0.101
    
    libpostproc    54.  0.100 / 54.  0.100

  • ffmpeg version

    pi@raspberrypi:/opt/livefeed $ ffmpeg -version
    
    ffmpeg version N-78909-gfb2f164 Copyright (c) 2000-2016 the FFmpeg developers
    
    built with gcc 4.9.2 (Raspbian 4.9.2-10)
    
    configuration: --arch=armel --target-os=linux --enable-gpl --enable-libx264 --enable-nonfree --enable-libass --enable-libfaac --enable-libmp3lame --enable-libfreetype
    
    libavutil      55. 19.100 / 55. 19.100
    
    libavcodec     57. 27.101 / 57. 27.101
    
    libavformat    57. 28.100 / 57. 28.100
    
    libavdevice    57.  0.101 / 57.  0.101
    
    libavfilter     6. 39.100 /  6. 39.100
    
    libswscale      4.  0.100 /  4.  0.100
    
    libswresample   2.  0.101 /  2.  0.101
    
    libpostproc    54.  0.100 / 54.  0.100

  • avconv version :

    pi@raspberrypi:/opt/livefeed $ avconv -version
    
    avconv version 11.4-6:11.4-1~deb8u1+rpi1, Copyright (c) 2000-2014 the Libav developers
    
    built on Jun 16 2015 05:32:34 with gcc 4.9.2 (Raspbian 4.9.2-10)
    
    avconv 11.4-6:11.4-1~deb8u1+rpi1
    
    libavutil     54.  3. 0 / 54.  3. 0
    
    libavcodec    56.  1. 0 / 56.  1. 0
    
    libavformat   56.  1. 0 / 56.  1. 0
    
    libavdevice   55.  0. 0 / 55.  0. 0
    
    libavfilter    5.  0. 0 /  5.  0. 0
    
    libavresample  2.  1. 0 /  2.  1. 0
    
    libswscale     3.  0. 0 /  3.  0. 0

  Thanks and cheers

  Clemens

• how is maxrate used in FFMPEG when converting ?

  9 septembre 2013, par rhbc73

  I met a problem when converting video stream into mpeg2 format with specified max bitrate in FFMPEG.

  The input file has a high bitrate of about 40Mbps (resolution is 720P),

  what I want to archive is to get a mpeg video of max bit rate of 9Mbps (keep same resolution)

  But when I used

  ffmpeg.exe -i Untitled720P.mp4 -c:v mpeg2video -c:a ac3 -r 25 -pix_fmt yuv420p -g 15 -       
  
  b:v 6000000 -maxrate 9000000 -minrate 0 -bufsize 1835008 -packetsize 2048 -muxrate 
  
  10080000 -b:a 448000 -ar 48000 manual.mpg

  there came out lots warnings of "buffer underflow", and the generated file has an overall bitrate of 29.7Mbps although 9000k is specified to be max.

  This generated mpeg video, when played in VLC player, stopped somewhere.

  So I want to know, if there's any other argument I can use to force ffmpeg to generate an output which strictly stays below the specified max bitrate ?

  Great thanks

• Should H.264 bit rate be multiples of 8 ?

  31 août 2016, par Dan Sharp

  I’m working on a video platform receiving H.264 video and building an HLS stream (transmuxing the H.264 to Mpeg2 TS segments via calls to ffmpeg).

  I wanted to set the bit rate to be about 2000 kbps, but I’m wondering : does it matter if it’s 2000 or 2048 ?

  In other words, do things calculate better if the bit rate is multiples of 8, like 512 or 2024 or 2048 ?

  I don’t know enough about how the bit rate is used, either on the sending side (camera) or on the processing side (ffmpeg).

  From tests... I can’t see any noticeable difference between 2000 and 2048, but maybe one is slightly better than another for the transmuxing and segmenting ?

  I welcome any thoughts/advice.