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• ffserver "dimensions not set" when loading stream

  29 May 2013, by 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

• msvc/icl: Intel Compiler support on Windows

  25 May 2013, by 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>
  

  • [DBH] configure

• RTMP to HLS: Segmentation fault

  25 May 2013, by Wildan Muhlis

  I have tried convert RTMP to HLS with ffmpeg. The segments created without -segment_format mpegts parameter, but it resulting corrupted .m3u8 file, If I add the parameter, segments couldn't created due to below error message.

  Anyone know how to solve it?

  ffmpeg encoding profile:

  ffmpeg -y -i ${input}" live=1 swfVfy=1" \
  
  -ar 48000 \
  
  -ab 64k \
  
  -s ${WIDTH}x${HEIGHT} \
  
  -vcodec libx264 \
  
  -b:v ${BR} \
  
  -partitions +parti4x4+partp8x8+partb8x8 \
  
  -subq 7 \
  
  -trellis 0 \
  
  -refs 0 \
  
  -coder 0 \
  
  -me_range 16 \
  
  -keyint_min 25 \
  
  -sc_threshold 40 \
  
  -i_qfactor 0.71 \
  
  -bt 200k \
  
  -maxrate ${BR} \
  
  -bufsize ${BR} \
  
  -rc_eq 'blurCplx^(1-qComp)' \
  
  -qcomp 0.6 \
  
  -qmin 30 \
  
  -qmax 51 \
  
  -qdiff 4 \
  
  -level 30 \
  
  -aspect ${WIDTH}:${HEIGHT} \
  
  -g 30 \
  
  -async 2 \
  
  -flags -global_header -map 0 \
  
  -f segment \
  
  -flags +loop \
  
  -segment_time 10 \
  
  -segment_list ${SEGMENT_LIST} \
  
  -segment_format mpegts\
  
  -segment_list_flags +live \
  
  ${OUTPUT}

  Error log:

  ffmpeg version N-53211-g5918b7a Copyright (c) 2000-2013 the FFmpeg developers
  
    built on May 18 2013 09:16:55 with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-3)
  
    configuration: --as=yasm --enable-gpl --enable-pthreads --disable-ffserver --disable-shared --enable-static --enable-gpl --enable-libfdk_aac --enable-libmp3lame --enable-libtheora --enable-libvpx --enable-libx264 --enable-librtmp --enable-nonfree
  
    libavutil      52. 33.100 / 52. 33.100
  
    libavcodec     55. 10.100 / 55. 10.100
  
    libavformat    55.  7.100 / 55.  7.100
  
    libavdevice    55.  0.100 / 55.  0.100
  
    libavfilter     3. 68.101 /  3. 68.101
  
    libswscale      2.  3.100 /  2.  3.100
  
    libswresample   0. 17.102 /  0. 17.102
  
    libpostproc    52.  3.100 / 52.  3.100
  
  rtmp server sent error
  
  Metadata:
  
    audiocodecid          .mp3
  
    videokeyframe_frequency5.00
  
    avclevel              30.00
  
    videodevice           ASUS USB2.0 Webcam
  
    audiosamplerate       44100.00
  
    audiochannels         2.00
  
    width                 320.00
  
    videodatarate         200.00
  
    presetname            Custom
  
    audioinputvolume      75.00
  
    creationdate          Sat May 25 20:02:26 2013
  
    videocodecid          avc1
  
    audiodevice           Microphone (Realtek High Defini
  
    avcprofile            66.00
  
    audiodatarate         96.00
  
    height                240.00
  
    framerate             30.00
  
  [flv @ 0x2df2960] max_analyze_duration 5000000 reached at 5018000 microseconds
  
  [flv @ 0x2df2960] decoding for stream 0 failed
  
  Input #0, flv, from 'rtmp://122.22.117.60:1935/oflaDemo/livestream live=1 swfVfy=1':
  
    Metadata:
  
      videokeyframe_frequency: 5
  
      avclevel        : 30
  
      videodevice     : ASUS USB2.0 Webcam
  
      keywords        : 
  
      audiochannels   : 2
  
      presetname      : Custom
  
      copyright       : 
  
      audioinputvolume: 75
  
      creationdate    : Sat May 25 20:02:26 2013
  
                      : 
  
      author          : 
  
      audiodevice     : Microphone (Realtek High Defini
  
      avcprofile      : 66
  
      title           : 
  
      description     : 
  
      rating          : 
  
    Duration: N/A, start: 0.000000, bitrate: 303 kb/s
  
      Stream #0:0: Video: h264 (Baseline), yuv420p, 320x240 [SAR 1:1 DAR 4:3], 204 kb/s, 30 tbr, 1k tbn, 60 tbc
  
      Stream #0:1: Audio: mp3, 44100 Hz, stereo, s16p, 98 kb/s
  
  Segmentation fault