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• Ffmpeg and png watermark on OSX error

  28 juin 2012, par Stpn

  I am trying to add watermark with transparent background on OSX with ffmpeg.

  I am using this command :

  ffmpeg -i test.mpg -vf "movie=stuff.png, scale=100:100 [watermark]; [in][watermark] overlay=main_w-overlay_w:main_h-overlay_h-10 [out]"  out.mpg

  And I am getting this :

  ffmpeg version 0.11.1 Copyright (c) 2000-2012 the FFmpeg developers
  
    built on Jun 12 2012 21:37:10 with clang 3.1 (tags/Apple/clang-318.0.54)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/0.11.1 --enable-shared --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-libfreetype --cc=/usr/bin/clang --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-librtmp --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libxvid --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libass --enable-libvo-aacenc --disable-ffplay
  
    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
  
  Input #0, mpeg, from 'test.mpg':
  
    Duration: 00:00:01.04, start: 1.000000, bitrate: 9106 kb/s
  
      Stream #0:0[0x1e0]: Video: mpeg1video, yuv420p, 640x480 [SAR 1:1 DAR 4:3], 104857 kb/s, 24 fps, 24 tbr, 90k tbn, 24 tbc
  
      Stream #0:1[0x1c0]: Audio: mp2, 44100 Hz, stereo, s16, 128 kb/s
  
  File 'out.mpg' already exists. Overwrite ? [y/N] y
  
  w:640 h:480 pixfmt:yuv420p tb:1/90000 sar:1/1 sws_param:flags=2
  
  [buffersink @ 0x7ff50bc1c3e0] No opaque field provided
  
  [png @ 0x7ff50c038400] unsupported bit depth 16 and color type 4
  
  [image2 @ 0x7ff50c044800] decoding for stream 0 failed
  
  [image2 @ 0x7ff50c044800] Could not find codec parameters (Video: png, 640x480)
  
  [movie @ 0x7ff50bc17200] Failed to find stream info
  
  [movie @ 0x7ff50bc17200] seek_point:0 format_name:(null) file_name:stuff.png stream_index:0
  
  [scale @ 0x7ff50bc178c0] auto-inserting filter 'auto-inserted scaler 0' between the filter 'Parsed_movie_0' and the filter 'Parsed_scale_1'
  
  Impossible to convert between the formats supported by the filter 'Parsed_movie_0' and the filter 'auto-inserted scaler 0'
  
  Error opening filters!

  I thought I am missing png support and I checked homebrew for libpng install, but it turn out png support is already included by Apple with OSX.

  Also I did

  ffmpeg -codecs list | grep -i png

  and I do have PNG support in ffmpeg :

  DEV D  png             PNG (Portable Network Graphics) image

• Watermark in video with ffmpeg Center-Top

  24 juillet 2013, par user2100830

  i currently have 2 commands where i can select to put my watermark top-left or top-right of the video but i also have a watermark,which i wish to put in center-top,but i could only put it in center of the video,can someone pease help me with putting the waternmark on center top of the video ? here's what im using

  $watermark = '-vf "movie='.$text_logo_path.' [watermark]; [in][watermark] overlay=10:main_h/2-overlay_h/2 [out]"

  how can i get it to be in Top-Center ?

• Using ffmpeg to watermark a capturing video on Android

  16 juillet 2013, par shhp

  I'm now researching on a project which utilizes ffmpeg to watermark captured video on Android. At the moment I can capture a video from the camera firstly and then use ffmpeg to watermark it. I don't know if it is possible to operate the video while it is being captured ?