Recherche avancée

Sur d’autres sites (9002)

• Not able to configure FFserver for RTSP

  2 novembre 2015, par Sujith

  I am kind of new to the streaming world... so, please forgive me if I ask kind of dumb question.

  I am trying to stream my pre-recorded file over RTSP through FFserver.

  My config file is :

  RTSPPort 8544
  
  <feed>
  
      File /home/xyz/tmp/feed2.ffm
  
      FileMaxSize 200K
  
      ACL allow 127.0.0.1
  
  </feed>
  
  
  
  <stream>
  
      Feed feed2.ffm
  
      Format rtsp
  
      VideoFrameRate 15
  
      VideoSize 352x240
  
      VideoBitRate 256
  
      VideoBufferSize 40
  
      VideoGopSize 30
  
      AudioBitRate 64
  
      StartSendOnKey
  
  </stream>

  After starting the server, it give the below log :

  $ ./ffserver -f doc/ffserver.conf
  
  ffserver version 0.11.1 Copyright (c) 2000-2012 the FFmpeg developers
  
  built on Sep 17 2012 19:46:38 with gcc 4.1.2 20080704 (Red Hat 4.1.2-52)
  
  configuration: --enable-gpl --enable-libmp3lame --enable-libtheora --enable-libvo-aacenc 
  
  -enable-libvorbis --enable-libvpx --enable-libx264 --enable-version3
  
  libavutil 51. 54.100 / 51. 54.100
  
  libavcodec 54. 23.100 / 54. 23.100
  
  libavformat 54. 6.100 / 54. 6.100
  
  libavdevice 54. 0.100 / 54. 0.100
  
  libavfilter 2. 77.100 / 2. 77.100
  
  libswscale 2. 1.100 / 2. 1.100
  
  libswresample 0. 15.100 / 0. 15.100
  
  libpostproc 52. 0.100 / 52. 0.100
  
  Wed Sep 19 17:03:32 2012 FFserver started.

  And now from my VLC client I am trying to type the URL : rtsp ://xxx.xxx.xxx.xxx:8554/test.sdp

  But, what happens is that, there is no response on the ffserver.

  I have no clue what might be the problem. Thanks in advance.

• Grayscale streaming from raw video using FFMPEG

  21 janvier 2015, par user1657208

  I have a raw video file (testvideo_1000f.raw) that I am trying to stream in gray scale using ffmpeg and output the grayscale video to output.swf. The command I am using to do this is :

  ffmpeg/ffmpeg -qmin 2 -qmax 31 -s 320x240 -f rawvideo -flags gray -pix_fmt:output gray -an -i testvideo_1000f.raw output.swf

  However, the result from this command is a video stream that is in gray scale but still contains some of the chrominance data. The output from this command is pasted below :

      3 [volta]/home/student/elliott> ffmpeg/ffmpeg -qmin 2 -qmax 31 -s 320x240 -f rawvideo -flags gray -pix_fmt:output gray -an -i testvideo_1000f.raw output.swf
  
  ffmpeg version N-41632-g2b1fc56 Copyright (c) 2000-2012 the FFmpeg developers
  
    built on Jul 29 2012 10:27:26 with gcc 4.1.2 20080704 (Red Hat 4.1.2-51)
  
    configuration: 
  
    libavutil      51. 58.100 / 51. 58.100
  
    libavcodec     54. 25.100 / 54. 25.100
  
    libavformat    54.  6.101 / 54.  6.101
  
    libavdevice    54.  0.100 / 54.  0.100
  
    libavfilter     2. 80.100 /  2. 80.100
  
    libswscale      2.  1.100 /  2.  1.100
  
    libswresample   0. 15.100 /  0. 15.100
  
  *** CHOOSING 8
  
  [rawvideo @ 0xdda9660] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, rawvideo, from 'testvideo_1000f.raw':
  
    Duration: N/A, start: 0.000000, bitrate: N/A
  
     Stream #0:0: Video: rawvideo (Y800 / 0x30303859), gray, 320x240, 25 tbr, 25 tbn, 25 tbc
  
  File 'output.swf' already exists. Overwrite ? [y/N] y
  
  w:320 h:240 pixfmt:gray tb:1/25 fr:25/1 sar:0/1 sws_param:flags=2
  
  [ffmpeg_buffersink @ 0xddb7b40] No opaque field provided
  
  [format @ 0xddb7d40] auto-inserting filter 'auto-inserted scaler 0' between the filter 'Parsed_null_0' and the filter 'format'
  
  [auto-inserted scaler 0 @ 0xddb7920] w:320 h:240 fmt:gray sar:0/1 -> w:320 h:240 fmt:yuv420p sar:0/1 flags:0x4
  
  *** CHOOSING 8
  
  Output #0, swf, to 'output.swf':
  
    Metadata:
  
      encoder         : Lavf54.6.101
  
     Stream #0:0: Video: flv1, yuv420p, 320x240, q=2-31, 200 kb/s, 90k tbn, 25 tbc
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (rawvideo -> flv)
  
  Press [q] to stop, [?] for help
  
  Truncating packet of size 76800 to 1 2875kB time=00:00:40.84 bitrate= 576.7kbits/s    
  
  frame= 1500 fps=1035 q=24.8 Lsize=    4194kB time=00:01:00.00 bitrate= 572.6kbits/s    
  
  video:4166kB audio:0kB global headers:0kB muxing overhead 0.669245%

  I am fairly new to FFMPEG and I am afraid I am using either the wrong syntax or the wrong parameters in my command line. For some reason, the format of the output is yuv420p. I have tried searching for this answer all over but have had no luck. Could anyone please help me and tell me why the output is being formatted in yuv420p when I am giving the command for it to be in 8bit grayscale ? Any help would be greatly appreciated. Thank you.

  Marc Elliott

• Phpvideotoolkit buffer error

  27 juin 2014, par Gowri

  Hi I’m using phpvideotoolkit for video conversions.

  This is my following code for extract frame.

  $video = new Video($example_video_path);
  
   $process = $video->extractFrame(new Timecode(12))
  
              ->save('./output/extract-frame.example1.jpg', null, Media::OVERWRITE_EXISTING);

  I’m getting this error

  Array
  
  (
  
      [0] => ERROR---------
  
      [1] => error
  
      [2] => Array
  
          (
  
              [0] => 8
  
              [1] => Undefined variable: buffer
  
              [2] => /home/test/public_html/assets/videotoolkit/src/PHPVideoToolkit/ExecBuffer.php
  
              [3] => 178
  
              [4] => Array
  
                  (

  Please help me.