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• Understanding CPU usage in linux using "top" command for VLC usage

  25 octobre 2014, par user3130013

  I have 2 quad core processors and I cant seem to understand what "top" is telling me.

  I run a VLC transcoding application and i currently transcode 8 streams and "top" shows me that I am using 200% of my CPU. Now for a Pentium 3 that would be horribly bad but I dont understand how Linux calculates CPU usage with multi core processors.

  Does this mean that my both processors are utilized 100% ? 2 cores at 100% ?

  I also ran ffmpeg application for the same purpose and I could run 8 instances at 90% each which seemed to me like each processoss would occupy 1 core.

  VLC has much lower CPU usage footprint so I just want to make sure I am not killing the hardware.

• Revision 5b76018057 : Merge "Added highbitdepth sse2 SAD acceleration and tests" into highbitdepth

  20 octobre 2014, par Alex Converse

  Changed Paths :
   Modify /vp9/common/vp9_rtcd_defs.pl

  
  
  Merge "Added highbitdepth sse2 SAD acceleration and tests" into highbitdepth

• how to solve ffmpeg watermark "No such filter : 'movie'" AND "Failed to avformat_open_input" ?

  28 août 2014, par Savas Adar

  i am developing a windows service, my windows service use "ffmpeg" and same time i am developing a desktop application for testing the code.

  i want to import a watermark in my videos. i can do it with my desktop app. but when i run my windows service it take an error.

  ffmpeg version N-36635-gceb0dd9 Copyright (c) 2000-2012 the FFmpeg developers
  
    built on Jan  9 2012 17:39:58 with gcc 4.6.2
  
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-runtime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
  
    libavutil      51. 34.100 / 51. 34.100
  
    libavcodec     53. 54.100 / 53. 54.100
  
    libavformat    53. 29.100 / 53. 29.100
  
    libavdevice    53.  4.100 / 53.  4.100
  
    libavfilter     2. 58.100 /  2. 58.100
  
    libswscale      2.  1.100 /  2.  1.100
  
    libswresample   0.  6.100 /  0.  6.100
  
    libpostproc    51.  2.100 / 51.  2.100
  
  [mpeg4 @ 01CA93A0] Invalid and inefficient vfw-avi packed B frames detected
  
  Input #0, avi, from 'C:\Apps\SabilVideoProcesser\WAITING_FOR_WATERMARK\Pixar - For the Birds.avi':
  
    Metadata:
  
      encoder         : Nandub v1.0rc2
  
    Duration: 00:03:16.56, start: 0.000000, bitrate: 2113 kb/s
  
      Stream #0:0: Video: mpeg4 (DX50 / 0x30355844), yuv420p, 720x416 [SAR 1:1 DAR 45:26], 25 fps, 25 tbr, 25 tbn, 30k tbc
  
      Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 48000 Hz, stereo, s16, 32 kb/s
  
  [buffer @ 02746A20] w:720 h:416 pixfmt:yuv420p tb:1/1000000 sar:1/1 sws_param:
  
  [movie @ 02748E00] Failed to avformat_open_input 'logo.png'
  
  Error initializing filter 'movie' with args 'logo.png'
  
  Error opening filters!

  i change logo.png sometimes but it didnt work and fixed. i dont understand what is wrong ?

  I tried change ffmpeg.exe and i downloaded from "http://ffmpeg.arrozcru.org/autobuilds/ffmpeg/mingw32/static/" but when i run service, i got an error again. this time error is different i will crazy...

  FFmpeg version SVN-r26400, Copyright (c) 2000-2011 the FFmpeg developers
  
    built on Jan 18 2011 04:07:05 with gcc 4.4.2
  
    configuration: --enable-gpl --enable-version3 --enable-libgsm --enable-libvorbis --enable-libtheora --enable-libspeex --enable-libmp3lame --enable-libopenjpeg --enable-libschroedinger --enable-libopencore_amrwb --enable-libopencore_amrnb --enable-libvpx --disable-decoder=libvpx --arch=x86 --enable-runtime-cpudetect --enable-libxvid --enable-libx264 --enable-librtmp --extra-libs='-lrtmp -lpolarssl -lws2_32 -lwinmm' --target-os=mingw32 --enable-avisynth --enable-w32threads --cross-prefix=i686-mingw32- --cc='ccache i686-mingw32-gcc' --enable-memalign-hack
  
    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
  
  [mpeg4 @ 003dfbd0] Invalid and inefficient vfw-avi packed B frames detected
  
  [mpeg4 @ 003dfbd0] frame skip 8
  
  
  
  Seems stream 0 codec frame rate differs from container frame rate: 30000.00 (30000/1) -> 25.00 (25/1)
  
  Input #0, avi, from 'C:\Apps\SabilVideoProcesser\WAITING_FOR_WATERMARK\Pixar - For the Birds.avi':
  
    Metadata:
  
      encoder         : Nandub v1.0rc2
  
    Duration: 00:03:16.56, start: 0.000000, bitrate: 2113 kb/s
  
      Stream #0.0: Video: mpeg4, yuv420p, 720x416 [PAR 1:1 DAR 45:26], 25 fps, 25 tbr, 25 tbn, 30k tbc
  
      Stream #0.1: Audio: mp3, 48000 Hz, 2 channels, s16, 189 kb/s
  
  [buffer @ 020d51b0] w:720 h:416 pixfmt:yuv420p
  
  No such filter: 'movie'
  
  Error opening filters!

  here is the my ffmpeg params ;

  -i "C:\Apps\SabilVideoProcesser\WAITING_FOR_WATERMARK\Pixar - For the Birds.avi" -vf "movie=logo.png [watermark]; [in][watermark] overlay=main_w-overlay_w-10:10 [out]" -vcodec libx264 -acodec ac3_fixed "C:\Apps\SabilVideoProcesser\WAITING_FOR_SPLIT\inprocess_Pixar - For the Birds.avi"