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• How do I use ffmpeg to deliver the video

  19 juin 2014, par user3750991

  Our destination :

  We want to install camera on our device of arm architecture with capture real-time video and send them to ffserver, then we can watch this video from h ttp ://172.16.51.29:8090/stat.html on the other computer in the same time.

  Device IP address : 172.16.51.29
  computer IP address : 172.16.51.26

  1 I start the server on device

  ffserver -f /etc/ffserver.conf

  2 Camera start to capture video on device

  ffmpeg -s 320x240 -f video4linux2 -i /dev/video0 h ttp ://127.0.0.1:8090/cam1.ffm

  3 I got the messages

  Error while opening encoder for output stream #0.0 - maybe incorrect
  parameters such as bit_rate, rate, width or height

  4 Test

  ffmpeg -s 320x240 -f video4linux2 -i /dev/video0 cam1.asf

  Command above is perfect to produce video named cam1.asf

  5 Fix incorrect parameters such as bit_rate, rate, width or height

  ffmpeg -s 320x240 -f video4linux2 -i /dev/video0 -b 100k h ttp ://127.0.0.1:8090/cam1.ffm

  But use the command above produce the message presented below

  Input #0, video4linux2, from ’/dev/video0’ :
  Duration : N/A, start : 24300.069612, bitrate : 36864 kb/s
  Stream #0.0 : Video : rawvideo, yuyv422, 320x240, 36864 kb/s, 30 tbr, 1000k tbn, 30 tbc
  Sat Jan 1 07:09:07 2000 127.0.0.1 - - [GET] "/cam1.ffm HTTP/1.1" 200 4149
  [buffer @ 0x2f1a0] w:320 h:240 pixfmt:yuyv422
  [avsink @ 0x2f7e0] auto-inserting filter ’auto-inserted scaler 0’ between the filter ’src’ and the filter ’out’
  [scale @ 0x2ea60] w:320 h:240 fmt:yuyv422 -> w:320 h:240 fmt:yuv420p flags:0x4
  Sat Jan 1 07:09:07 2000 127.0.0.1 - - [POST] "/cam1.ffm HTTP/1.1" 200 0
  Segmentation fault

  What should I do to fix this issue ? Thanks.

• Convert stream to a stream on the fly with ffmpeg/avconv

  6 juillet 2014, par Apacci

  I’m trying to convert flv stream to another mp3 or ogg stream. The point is I want to use mp3/ogg stream on HTML5 page, because flv stream can’t be played with HTML5. So, I configured avserver.conf :

  Port 8090
  
  BindAddress 0.0.0.0
  
  MaxHTTPConnections 2000
  
  MaxClients 1000
  
  MaxBandwidth 1000
  
  CustomLog -
  
  
  
  <feed>
  
      File /tmp/feed1.ffm
  
      FileMaxSize 200K
  
      ACL allow 127.0.0.1
  
  </feed>
  
  
  
  <stream>
  
      Feed feed1.ffm
  
      Format ogg
  
      AudioBitRate 64
  
      AudioChannels 1
  
      AudioSampleRate 44100
  
      NoVideo
  
  </stream>
  
  
  
  <stream>
  
      ACL allow localhost
  
      ACL allow 192.168.0.0 192.168.255.255
  
  </stream>
  
  
  
  <redirect>
  
      URL http://www.libav.org/
  
  </redirect>

  the command I use :

  avconv -i http://some_stream_service?format=flv -acodec mp3 http://localhost:8090/feed1.ffm

  console output :

  avconv version 9.13-6:9.13-0ubuntu0.14.04.1+fdkaac, Copyright (c) 2000-2014 the Libav developers
  
    built on May 10 2014 17:26:31 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
  
  [flv @ 0x126e020] max_analyze_duration reached
  
  Input #0, flv, from 'http://some_stream_service?format=flv':
  
    Metadata:
  
      encoder         : Lavf52.87.1
  
    Duration: 00:00:00.00, start: 0.000000, bitrate: N/A
  
      Stream #0.0: Audio: aac, 44100 Hz, stereo, fltp, 31 kb/s
  
  Output #0, ffm, to 'http://localhost:8090/feed1.ffm':
  
    Metadata:
  
      encoder         : Lavf54.20.4
  
      Stream #0.0: Audio: libmp3lame, 44100 Hz, stereo, fltp
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (aac -> libmp3lame)
  
  Press ctrl-c to stop encoding
  
  size=    1080kB time=66.14 bitrate= 133.8kbits/s 

  It looks like working, but I keep getting 0 bytes on web page http://localhost:8090/test1.ogg. Does anybody have ideas what I’m doing wrong ?

• ffserver + ffmpeg, stream out rtsp, ffplay cannot play, but movie player can

  17 juillet 2014, par user1914692

  Ubuntu 12.04
  I use ffserver + ffmpeg.

  There are a little revision of the original /etc/ffserver.conf :

  RTSPPort 5454
  
  RTSPBindAddress 0.0.0.0
  
  
  
  # ...
  
  
  
  <stream>
  
  Format rtp
  
  # coming from live feed 'feed1'
  
  Feed feed1.ffm
  
  </stream>

  The command of ffmpeg (Option 1) is :

  ffmpeg -re -i '/usr/share/red5/webapps/oflaDemo/streams/hobbit_vp6.flv'  http://localhost:8090/feed1.ffm

  BTW, if I use Option 2 as below, it does not work :

  ffmpeg -re -i '/usr/share/red5/webapps/oflaDemo/streams/hobbit_vp6.flv'  http://192.168.1.105:8090/feed1.ffm
  
  ## not work:
  
  [http @ 0x21a9c80] HTTP error 404 Not Found
  
  http://192.168.1.105:8090/feed1.ffm: Input/output error

  So now I need to display the stream.
  On the other computer :

  (Option 1) ffplay rtsp://192.168.1.105:5454/test2-rtsp.mpg

  Not work. [Output] rtsp UDP timeout, retrying with TCP.

  (Option 2) movie player : Open location : rtsp ://192.168.1.105:5454/test2-rtsp.mpg
  it works !