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• ffmpeg fade filter installed but not working ?

  4 novembre 2011, par Astha

  I have php 5.1.6 running on my CentOS 5 server running Apache 2.2.3

  I installed ffmpeg library and my aim is to covert a set of images into a slideshow with the fadein/fade out effect per image swap.

  Command ffmpeg says :

  `FFmpeg version SVN-r26402, Copyright (c) 2000-2011 the FFmpeg developers
  
    built on Sep 12 2011 03:37:39 with gcc 4.1.2 20080704 (Red Hat 4.1.2-50)
  
    configuration:
  
    libavutil     50.36. 0 / 50.36. 0
  
    libavcore      0.16. 1 /  0.16. 1
  
    libavcodec    52.108. 0 / 52.108. 0
  
    libavformat   52.93. 0 / 52.93. 0
  
    libavdevice   52. 2. 3 / 52. 2. 3
  
    libavfilter    1.74. 0 /  1.74. 0
  
    libswscale     0.12. 0 /  0.12. 0
  
  Hyper fast Audio and Video encoder
  
  usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...
  
  
  
  Use -h to get full help or, even better, run 'man ffmpeg'

  and command ffmpeg -filters prints :

  FFmpeg version SVN-r26402, Copyright (c) 2000-2011 the FFmpeg developers
  
    built on Sep 12 2011 03:37:39 with gcc 4.1.2 20080704 (Red Hat 4.1.2-50)
  
    configuration:
  
    libavutil     50.36. 0 / 50.36. 0
  
    libavcore      0.16. 1 /  0.16. 1
  
    libavcodec    52.108. 0 / 52.108. 0
  
    libavformat   52.93. 0 / 52.93. 0
  
    libavdevice   52. 2. 3 / 52. 2. 3
  
    libavfilter    1.74. 0 /  1.74. 0
  
    libswscale     0.12. 0 /  0.12. 0
  
  Filters:
  
  anull            Pass the source unchanged to the output.
  
  anullsrc         Null audio source, never return audio frames.
  
  anullsink        Do absolutely nothing with the input audio.
  
  copy             Copy the input video unchanged to the output.
  
  crop             Crop the input video to width:height:x:y.
  
  drawbox          Draw a colored box on the input video.
  
  fifo             Buffer input images and send them when they are requested.
  
  format           Convert the input video to one of the specified pixel formats.
  
  gradfun          Debands video quickly using gradients.
  
  hflip            Horizontally flip the input video.
  
  noformat         Force libavfilter not to use any of the specified pixel formats for the input to the next filter.
  
  null             Pass the source unchanged to the output.
  
  overlay          Overlay a video source on top of the input.
  
  pad              Pad input image to width:height[:x:y[:color]] (default x and y: 0, default color: black).
  
  pixdesctest      Test pixel format definitions.
  
  scale            Scale the input video to width:height size and/or convert the image format.
  
  setdar           Set the frame display aspect ratio.
  
  setpts           Set PTS for the output video frame.
  
  setsar           Set the pixel sample aspect ratio.
  
  settb            Set timebase for the output link.
  
  slicify          Pass the images of input video on to next video filter as multiple slices.
  
  transpose        Transpose input video.
  
  unsharp          Sharpen or blur the input video.
  
  vflip            Flip the input video vertically.
  
  buffer           Buffer video frames, and make them accessible to the filterchain.
  
  color            Provide an uniformly colored input, syntax is: [color[:size[:rate]]]
  
  nullsrc          Null video source, never return images.
  
  nullsink         Do absolutely nothing with the input video.`

  firstly my ffmpeg was not having fade filter because it was giving error

  fade: filter not found

  so i installed the patch created vf_fade.c and made corresponding changes to Makefile and allfilters.c file of directory libavfilters in ffmpeg. configured it again then also ran commands 'make' and 'make install' Restarted the server but still its showing the same error

  fade: filter not found

  what should i do next ? if any more details needed please ask and all the helps and ideas and links will be appreciated.

• Playing RTSP stream in Android

  9 décembre 2014, par Kamil

  I’m trying to play video stream on Android device. Unfortunatelly I still get the same problem with MediaPlayer/VideoView. I’m searching for a few days, but still haven’t found any working solution.
  For test purposes I’m using MediaPlayer app from API Demos (API Demos/Media/MediaPlayer/Play Streaming Video).
  Here is code snippet for playing stream

  mMediaPlayer = new MediaPlayer();
  
  mMediaPlayer.setDataSource(path);
  
  mMediaPlayer.setDisplay(holder);
  
  mMediaPlayer.prepare();
  
  mMediaPlayer.setOnBufferingUpdateListener(this);
  
  mMediaPlayer.setOnCompletionListener(this);
  
  mMediaPlayer.setOnPreparedListener(this);
  
  mMediaPlayer.setOnVideoSizeChangedListener(this);

  When I try to play stream I get this info from logcat
  http://pastebin.com/5Uib5CH5

  This is configuration of ffserver streaming the video

  Port 8090
  
  BindAddress 0.0.0.0
  
  
  
  RTSPPort 7654
  
  RTSPBindAddress 0.0.0.0
  
  
  
  MaxHTTPConnections 2000
  
  MaxClients 1000
  
  MaxBandwidth 10000
  
  
  
  CustomLog -
  
  NoDaemon
  
  <Feed feed1.ffm>
  
  
  
  File /tmp/feed1.ffm
  
  FileMaxSize 5M
  
  
  
  Launch ffmpeg -i mmsh://tempserv.cam/vid1
  
  
  
  ACL allow 127.0.0.1
  
  
  
  </Feed>
  
  
  
  <Stream rat1.mpg>
  
  Feed feed1.ffm
  
  Format rtp
  
  NoAudio
  
  VideoBitRate 56k
  
  VideoBufferSize 40
  
  VideoFrameRate 12
  
  VideoSize 176x144
  
  VideoGopSize 12
  
  VideoCodec libx264
  
  AVPresetVideo baseline
  
  </Stream>

  If anyone can advise me how to fix it, or at least indicate an mistake, I will be grateful.

• Revision 284e793d5a : Add constant to represent minimum KF boost Added a constant to represent the mi

  23 janvier 2014, par Adrian Grange

  Changed Paths :
   Modify /vp9/encoder/vp9_firstpass.c

  
  
  Add constant to represent minimum KF boost

  Added a constant to represent the minimum KF boost
  rather than using the magic number 2000 in the code.

  Change-Id : I9428b61f47d26312caff81c6f9ae8587df004791