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• ffplay playing videos very slow and choppy

  2 juin 2014, par Pavan K

  I am trying to compile ffplay from sources to run on pcduino running ubuntu

  If I install ffplay via sudo apt-get install ffmpeg the videos play perfectly But I tried to compile ffplay from the sources using the guide here ffmpeg compilation the videos play terribly slowand look very very choppy.

  Do I have to use some specific flags for compilation. I just would like a bare bones video player ffplay. I do not want to encode or do any heavy computation with the binary.

  ffplay verison is

      ./ffplay -version    
  
  ffplay version git-2013-06-14-d891d35
  
  built on Jun  2 2014 14:15:57 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
  
  configuration: --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree
  
  libavutil      52. 35.101 / 52. 35.101
  
  libavcodec     55. 16.100 / 55. 16.100
  
  libavformat    55.  8.102 / 55.  8.102
  
  libavdevice    55.  2.100 / 55.  2.100
  
  libavfilter     3. 77.101 /  3. 77.101
  
  libswscale      2.  3.100 /  2.  3.100
  
  libswresample   0. 17.102 /  0. 17.102
  
  libpostproc    52.  3.100 / 52.  3.100

  And this is from apt-get

  ffplay -version 
  
  avplay version 0.8.10-4:0.8.10-0ubuntu0.12.04.1, Copyright (c) 2003-2013 the Libav developers
  
    built on Feb  6 2014 21:09:10 with gcc 4.6.3
  
  avplay 0.8.10-4:0.8.10-0ubuntu0.12.04.1
  
  libavutil    51. 22. 2 / 51. 22. 2
  
  libavcodec   53. 35. 0 / 53. 35. 0
  
  libavformat  53. 21. 1 / 53. 21. 1
  
  libavdevice  53.  2. 0 / 53.  2. 0
  
  libavfilter   2. 15. 0 /  2. 15. 0
  
  libswscale    2.  1. 0 /  2.  1. 0
  
  libpostproc  52.  0. 0 / 52.  0. 0

  i have the following error when I play with the built ffplay

  ALSA lib pcm.c:7339:(snd_pcm_recover) underrun occurred  0B f=0/0
  
  ALSA lib pcm.c:7339:(snd_pcm_recover) underrun occurred  0B f=0/0

• Stream ffmpeg output to flash player in node.js

  10 décembre 2013, par dave

  I'm using ffmpeg to take a video source and live stream it to the browser in flash.

  Here's the code (using expressjs) :

  app.get('/stream', function(req, res) {
  
  
  
      var command = spawn('ffmpeg', ['-re','-i','video.avi','-c:v','libx264','-c:a','libfaac','-ar',44100,'-f','flv','-']);
  
  
  
      res.setHeader("Accept-Ranges", "bytes");
  
      res.setHeader("Content-Type", "video/x-flv");        
  
      command.stdout.pipe(res);
  
  
  
  });

  EDIT : The command this uses is :

  ffmpeg -re -i video.avi -c:v libx264 -c:a libfaac -ar 44100 -f flv -

  If I load this URL in the browser directly, it downloads the flv file and I can play it back in VLC player. However, when I use this in a player like JWPlayer or even try to simply embed, it doesn't show or anything.

  Any idea what I could be missing here ?

  Thank you !

  EDIT : Here's the output from ffmpeg, after this it's just the bytes that continue on as it encodes.

  ffmpeg version N-52420-gfc69033 Copyright (c) 2000-2013 the FFmpeg developers
  
    built on Apr 25 2013 17:10:30 with llvm-gcc 4.2.1 (LLVM build 2336.11.00)
  
    configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libaacplus --enable-libass --enable-libcelt --enable-libfaac --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-openssl --enable-libopus --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvo-aacenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --prefix=/usr/local
  
    libavutil      52. 27.100 / 52. 27.100
  
    libavcodec     55.  6.100 / 55.  6.100
  
    libavformat    55.  3.100 / 55.  3.100
  
    libavdevice    55.  0.100 / 55.  0.100
  
    libavfilter     3. 60.101 /  3. 60.101
  
    libswscale      2.  2.100 /  2.  2.100
  
    libswresample   0. 17.102 /  0. 17.102
  
    libpostproc    52.  3.100 / 52.  3.100
  
  [avi @ 0x7ffb12004800] non-interleaved AVI
  
  Input #0, avi, from 'video.avi':
  
    Metadata:
  
      encoder         : AVI-Mux GUI 1.17.8.3, Feb 16 201019:42:50
  
      JUNK            : 
  
    Duration: 01:58:39.79, start: 0.000000, bitrate: 1710 kb/s
  
      Stream #0:0: Video: mpeg4 (Advanced Simple Profile) (XVID / 0x44495658), yuv420p, 720x304 [SAR 1:1 DAR 45:19], 29.97 tbr, 29.97 tbn, 29.98 tbc
  
      Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, 5.1(side), fltp, 192 kb/s
  
      Metadata:
  
        title           : videotest
  
  [libx264 @ 0x7ffb12022000] using SAR=1/1
  
  [libx264 @ 0x7ffb12022000] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
  
  [libx264 @ 0x7ffb12022000] profile High, level 3.0
  
  [libx264 @ 0x7ffb12022000] 264 - core 125 - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - 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=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, flv, to 'pipe:':
  
    Metadata:
  
      JUNK            : 
  
      encoder         : Lavf55.3.100
  
      Stream #0:0: Video: h264 ([7][0][0][0] / 0x0007), yuv420p, 720x304 [SAR 1:1 DAR 45:19], q=-1--1, 1k tbn, 29.97 tbc
  
      Stream #0:1: Audio: aac ([10][0][0][0] / 0x000A), 44100 Hz, 5.1, s16, 128 kb/s
  
      Metadata:
  
        title           : videotest
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (mpeg4 -> libx264)
  
    Stream #0:1 -> #0:1 (ac3 -> libfaac)
  
  Press [q] to stop, [?] for help
  
  FLVme=  -43 fps= 28 q=0.0 size=       0kB time=00:00:01.48 bitrate=   2.2kbits/s    
  
  videodatarateionframerate@=?Q??s
  
  audiodatarate@_@audiosamplerate@刀audiosamplesize@0stereo
  
                                                           audiocodecid@$JUNKencoder
  
                                                                                    Lavf55.3.10filesize   8   -d??gd??@?'?c1--?h???"??0   ?B?????E???H??,? ?#??x264 - core 125 - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - 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=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00?Re??g?$?<<

• Play stream via FFplay (FFmpeg) in Docker

  18 mars 2020, par Matan Marciano

  It is possible to play a video file via ffplay in Docker ?
  I have tried to build this docker :

  Dockerfile :

  FROM ubuntu:18.04
  
  RUN apt-get update && apt-get install -y ffmpeg

  After run this docker with a command :

  docker run -v /demo:/demo ffmpeg-test bash -c "ffplay -i /demo/test.mp4"

  I got ffplay logs without any player window.
  What am I missing ?

  FFplay logs :

  ffplay version 3.4.6-0ubuntu0.18.04.1 Copyright (c) 2003-2019 the FFmpeg developers
  
    built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
  
    configuration: --prefix=/usr --extra-version=0ubuntu0.18.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
  
    libavutil      55. 78.100 / 55. 78.100
  
    libavcodec     57.107.100 / 57.107.100
  
    libavformat    57. 83.100 / 57. 83.100
  
    libavdevice    57. 10.100 / 57. 10.100
  
    libavfilter     6.107.100 /  6.107.100
  
    libavresample   3.  7.  0 /  3.  7.  0
  
    libswscale      4.  8.100 /  4.  8.100
  
    libswresample   2.  9.100 /  2.  9.100
  
    libpostproc    54.  7.100 / 54.  7.100