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• FFMPEG avi to streaming mp4

  29 mai 2013, par Vprnl

  I'm trying to get ffmpeg to encode various AVI files to mp4 for streaming purposes but my inexperience with the subject matter is making me doubt I'll ever get this to work.

  I use this commandline :

  ffmpeg -i test.avi -vcodec libx264 -r 24 -ac 2 -acodec ac3 -ab 128k -bt 240k -preset    fast -strict -2 -b:v 320K -bufsize 62000 -maxrate 62000 -movflags frag_keyframe+empty_moov test.mp4

  I use the " -movflags frag_keyframe+empty_moov" to make it possible to serve a fragmented mp4

  And this is the log I get :

      file conversion error ffmpeg version N-53577-gced0307 Copyright (c) 2000-2013 the FFmpeg developers
  
        built on May 28 2013 12:21:54 with gcc 4.7.3 (GCC)
  
        configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0
  
      r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgsm --enable-libil
  
      bc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus -
  
      -enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc
  
       --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
  
        libavutil      52. 34.100 / 52. 34.100
  
        libavcodec     55. 12.100 / 55. 12.100
  
        libavformat    55.  7.100 / 55.  7.100
  
        libavdevice    55.  1.101 / 55.  1.101
  
        libavfilter     3. 72.100 /  3. 72.100
  
        libswscale      2.  3.100 /  2.  3.100
  
        libswresample   0. 17.102 /  0. 17.102
  
        libpostproc    52.  3.100 / 52.  3.100
  
      [avi @ 002ce8c0] non-interleaved AVI
  
      Input #0, avi, from 'C:/temp/test.avi':
  
        Metadata:
  
          encoder         : MEncoder Sherpya-MT-SVN-r31027-4.2.5
  
        Duration: 01:15:15.47, start: 0.000000, bitrate: 4798 kb/s
  
          Stream #0:0: Video: mpeg4 (Simple Profile) (XVID / 0x44495658), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 23.98 tb
  
      n, 24k tbc
  
          Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, 5.1(side), fltp, 640 kb/s
  
      [libx264 @ 03c57020] max bitrate less than average bitrate, assuming CBR
  
      [libx264 @ 03c57020] using SAR=1/1
  
      [libx264 @ 03c57020] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.1 Cache64
  
      [libx264 @ 03c57020] profile High, level 3.1
  
      [libx264 @ 03c57020] 264 - core 133 r2334 a3ac64b - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x264.html - op
  
      tions: cabac=1 ref=2 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=6 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=3 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlace
  
      d=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=1 keyint=250 keyi
  
      nt_min=24 scenecut=40 intra_refresh=0 rc_lookahead=30 rc=cbr mbtree=1 bitrate=320 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_m
  
      axrate=320 vbv_bufsize=62 nal_hrd=none ip_ratio=1.40 aq=1:1.00
  
      Output #0, mp4, to 'pipe:1':
  
        Metadata:
  
          encoder         : Lavf55.7.100
  
          Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 320 kb/s, 12288 tbn, 24
  
      tbc
  
          Stream #0:1: Audio: ac3 ([165][0][0][0] / 0x00A5), 48000 Hz, stereo, fltp, 128 kb/s
  
      Stream mapping:
  
        Stream #0:0 -> #0:0 (mpeg4 -> libx264)
  
        Stream #0:1 -> #0:1 (ac3 -> ac3)
  
      Press [q] to stop, [?] for help
  
      frame=   37 fps=0.0 q=0.0 size=       1kB time=00:00:01.97 bitrate=   4.7kbits/s
  
      frame=   41 fps= 36 q=27.0 size=       1kB time=00:00:01.97 bitrate=   4.7kbits/s
  
      frame=   51 fps= 31 q=22.0 size=       1kB time=00:00:02.49 bitrate=   3.7kbits/s
  
      frame=   63 fps= 27 q=21.0 size=       1kB time=00:00:02.97 bitrate=   3.1kbits/s
  
      frame=   82 fps= 29 q=21.0 size=       1kB time=00:00:03.48 bitrate=   2.7kbits/s
  
      frame=   91 fps= 26 q=21.0 size=       1kB time=00:00:03.99 bitrate=   2.3kbits/s
  
      frame=  101 fps= 25 q=23.0 size=       1kB time=00:00:04.47 bitrate=   2.1kbits/s
  
      frame=  114 fps= 25 q=21.0 size=       1kB time=00:00:04.98 bitrate=   1.9kbits/s
  
      frame=  128 fps= 25 q=26.0 size=       1kB time=00:00:05.46 bitrate=   1.7kbits/s
  
      frame=  135 fps= 24 q=38.0 size=       1kB time=00:00:05.97 bitrate=   1.6kbits/s
  
      frame=  141 fps= 23 q=45.0 size=       1kB time=00:00:05.97 bitrate=   1.6kbits/s

  I hope someone can point me in the right direction. The goal is to serve the file to a html5 player. But sadly that has not yet worked.
  Thanks !

  [EDIT]

  Sorry if I'm being unclear. I have two issues. First FFMPEG gives me an error (as you can see in the log) but I'm uncertain why I get this error and secondly, the stream does not actually work. The tanscoding starts, but the player never receives the video

• msvc/icl : Intel Compiler support on Windows

  25 mai 2013, par Alex Smith

  msvc/icl : Intel Compiler support on Windows
  Initial support for the ICL compiler on windows. Requires a new
  
  c99wrap with ICL support (1.0.2+).
  Currently not much different speed wise compared to msvc. In the
  
  future with a few changes it can be made to support the inline asm.
  
  This would be the primary reason for using it.
  Passed all fate tests, versions tested :
  
      13.1.1.171 (2013 Update 3) x86 and x64
  
      12.1.5.344 (2011 Update 11) x86 and x64
  Signed-off-by : Luca Barbato <lu_zero@gentoo.org>
  

  • [DH] configure

• ffserver "dimensions not set" when loading stream

  29 mai 2013, par GreenGiant

  I am live streaming a webcam from my raspberry pi using avconv (ffmpeg "replacement")

  avconv -f video4linux2 -v debug -r 5 -s 176x144 -i /dev/video0 -vcodec mjpeg http://192.168.0.3:8090/feed1.ffm

  to my local network OSX machine (for testing) running ffserver

  Port 8090
  
  BindAddress 0.0.0.0
  
  MaxHTTPConnections 2000
  
  MaxClients 1000
  
  MaxBandwidth 10000
  
  CustomLog -
  
  NoDaemon
  
  
  
  <feed>
  
     File feed1.ffm
  
     FileMaxSize 20M
  
     ACL allow 192.168.0.10
  
  </feed>
  
  
  
  <stream>
  
     Feed feed1.ffm
  
     Format mjpeg
  
     NoAudio
  
     VideoQMin 1
  
     VideoQMax 10
  
     VideoSize 176x144
  
     VideoFrameRate 5
  
  </stream>

  When I start avconv it appears to be streaming to ffserver fine :

  Output #0, ffm, to 'http://192.168.0.3:8090/feed1.ffm':
  
    Metadata:
  
      encoder         : Lavf55.0.1
  
      Stream #0.0, 0, 1/1000000: Video: mjpeg, yuvj420p, 320x240, 1/5, q=2-31, 200 kb/s, 1000k tbn, 5 tbc
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (rawvideo -> mjpeg)
  
  Press ctrl-c to stop encoding
  
  frame=  108 fps= 18 q=21.7 size=     688kB time=21.60 bitrate= 260.9kbits/s 

  And the ffserver status page shows the stream

  

  However when I load http://localhost:8090/test.mjpeg in VLC it doesn't play and ffserver spits out :

  Sat May 25 17:25:34 2013 dimensions not set
  
  Sat May 25 17:25:34 2013 Error writing output header
  
  Sat May 25 17:25:34 2013 127.0.0.1 - - [GET] "/test.mjpeg HTTP/1.1" 200 66

  I've tried so many different configurations and settings, I'm at a loss to what is causing that error !

  Thank you