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• FFMPEG with SSM is not using the specified network interface

  23 janvier 2014, par caspar

  I'm trying to use ffmpeg/ffprobe to join a SSM stream on a server with multiple network interfaces. I'm using the following command to initialize the input :

  c:\ffmpeg\bin>ffprobe "udp://232.2.4.206:24206?localaddr=10.15.248.217&sources=10.15.248.210,10.15.248.211,10.15.248.212,10.15.248.213&connect=1&fifo_size=1000000" -v 9 -loglevel 99

  The routing on the server can't be changed, though I can confirm other applications running on the same server are able to join and receive the multicast signal. The issue is, I believe, with the localaddr parameter, which is ignored it seems. Using Wireshark I can see that the wrong interface is being used (i.e. not the 10.15.248.217 interface).

  The output of the above command is :

  ffprobe version N-60087-g94a5241 Copyright (c) 2007-2014 the FFmpeg developers
  
  built on Jan 21 2014 22:06:13 with gcc 4.8.2 (GCC)
  
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgsm --enable-libilbc --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-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
  
  libavutil      52. 63.100 / 52. 63.100
  
  libavcodec     55. 48.102 / 55. 48.102
  
  libavformat    55. 25.101 / 55. 25.101
  
  libavdevice    55.  5.102 / 55.  5.102
  
  libavfilter     4.  1.100 /  4.  1.100
  
  libswscale      2.  5.101 /  2.  5.101
  
  libswresample   0. 17.104 /  0. 17.104
  
  libpostproc    52.  3.100 / 52.  3.100
  
  [udp @ 000000000272dcc0] end receive buffer size reported is 65536

  Anyone have experience with this use case ? Perhaps this is a bug that needs raising ?

  EDIT : I found out that if I remove the &sources= parameter, the localaddr is used and the request is passed through the correct interface, however as I need to join a SSM stream, this still blocks me from continuing.

• vcodec copy does not work when start/duration is messed up in video file

  25 janvier 2014, par anishsane

  My Video file shows below meta-data with ffprobe/ffmpeg :

  Duration: 00:44:27.52, start: 1333.760000, bitrate: 335 kb/s
  
    Stream #0.0(und): Video: h264 (Main), yuv420p, 640x480, 25 tbr, 90k tbn, 50 tbc

  Note : The file does not contain audio.

  I am trying to convert this video file to other video file, using ffmpeg/avconv.

  This works : (but encodes h.264 video to mpeg4)

  ffmpeg -i input.mp4 output.mp4

  & it generates output file of proper duration (44:27 - 1333 seconds = 22:14)

  This does not work :

  ffmpeg -i input.mp4 -vcodec copy output.mp4

  Generates file without video.

  The output contains :

  $ avconv -i input.mp4 -vcodec copy output.mp4
  
  
  
  avconv version 0.8.9-6:0.8.9-0ubuntu0.13.10.1, Copyright (c) 2000-2013 the Libav developers
  
    built on Nov  9 2013 19:09:46 with gcc 4.8.1
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input.mp4':
  
    Metadata:
  
      major_brand     : dash
  
      minor_version   : 0
  
      compatible_brands: iso6avc1mp41
  
      creation_time   : 2014-01-19 22:43:21
  
    Duration: 00:44:27.52, start: 1333.760000, bitrate: 335 kb/s
  
      Stream #0.0(und): Video: h264 (Main), yuv420p, 640x480, 25 tbr, 90k tbn, 50 tbc
  
      Metadata:
  
        creation_time   : 2014-01-19 22:43:21
  
  Output #0, mp4, to 'output.mp4':
  
    Metadata:
  
      major_brand     : dash
  
      minor_version   : 0
  
      compatible_brands: iso6avc1mp41
  
      creation_time   : 2014-01-19 22:43:21
  
      encoder         : Lavf53.21.1
  
      Stream #0.0(und): Video: ![0][0][0] / 0x0021, yuv420p, 640x480, q=2-31, 90k tbn, 90k tbc
  
      Metadata:
  
        creation_time   : 2014-01-19 22:43:21
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
  Press ctrl-c to stop encoding
  
  frame=    0 fps=  0 q=-1.0 Lsize=       0kB time=10000000000.00 bitrate=   0.0kbits/s    
  
  video:0kB audio:0kB global headers:0kB muxing overhead inf%

• Running an Terminal command inside a Directory

  22 janvier 2014, par user3220153

  I want to run and tell ffmpeg, a video converter, to combine an audio and video file to one video file. I want to do this in terminal so I can do this repeatedly and quickly.

  This works in Terminal :

  [directoryX]/ ffmpeg -i [directoryX]/sound.wav -i [directoryX]/movie.avi video_finale.mpg
  Pause

  But I do NOT want to keep specifying the directory in Terminal because there are many folders in which I need to do this. I would like to create a .command file, copy it and the ffmpeg application (very small), and past it in every folder that needs a video conversion. I would then run the .command file and it would execute the command mentioned above in the local folder. What is the best way to approach this ???

  This line in .command file does NOT work (inside the folder with ffmpeg, audio and video) :

  ffmpeg -i sound.wav -i movie.avi video_finale.mpg
  Pause

  I get :

  wireless-10-146-122-30:~ yagostucky$ /Volumes/TURBOLINEA/inFrontOfMe/footage/jan-19-2014/dollGhost_duke_act1_scene3_take1/batch.command ; exit;
  
  /Volumes/TURBOLINEA/inFrontOfMe/footage/jan-19-2014/dollGhost_duke_act1_scene3_take1/batch.command: line 1: ffmpeg: command not found
  
  /Volumes/TURBOLINEA/inFrontOfMe/footage/jan-19-2014/dollGhost_duke_act1_scene3_take1/batch.command: line 2: pause: command not found
  
  logout
  
  
  
  [Process completed]