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• Encoding of two full hd streams in Linux + GPU with Intel HD4000 / VA API / FFMPEG / OpenGL

  27 juin 2017, par qknight

  i want to encode/stream two full hd streams in realtime from my laptop to a remote location using linux/xorg on the host.

  VA API

  for this i’ve been playing with the VA API but the performance is pretty bad with 5.59 fps (see paste below).

  FFMPEG

  using ffmpeg with CPU encoding i get about 200 fps but then all cores of my Intel(R) Core(TM) i7-3520M CPU @ 2.90GHz are busy and the fan turns on.

  future plans

  i want GPU support in encoding and later integrate this into a program which streams a virtual xorg ’screen’, see https://lastlog.de/wiki/index.php/Raspberry_PI_virtual_screen for more details on my plans.

  maybe h264 isn’t even what i want ? so if someone advices towards a different implementation, i’d welcome that.

  besides VA API there seems to be QuickSync but i didn’t experiment with that yet as it is not packaged on NixOS just yet.

  note : i need a library to have a smooth integration into the code.

  h264encode -w 1920 -h 1080 —profile MPSource frame is 1920x1080 and will code clip to 1920x1088 with crop
  INPUT:Try to encode H264...
  
  INPUT : Resolution : 1920x1080, 60 frames
  
  INPUT : FrameRate : 30
  
  INPUT : Bitrate : 14929920
  
  INPUT : Slieces : 1
  
  INPUT : IntraPeriod : 30
  
  INPUT : IDRPeriod : 60
  
  INPUT : IpPeriod : 1
  
  INPUT : Initial QP : 26
  
  INPUT : Min QP : 0
  
  INPUT : Source YUV : AUTO generated
  
  INPUT : Coded Clip : /tmp/test.264
  
  INPUT : Rec   Clip : Not save reconstructed frame
  libva info : VA-API version 0.38.1
  
  libva info : va_getDriverName() returns 0
  
  libva info : Trying to open /run/opengl-driver/lib/dri/i965_drv_video.so
  
  libva info : Found init function __vaDriverInit_0_38
  
  libva info : va_openDriver() returns 0
  
  Use profile VAProfileH264Main
  
  Support rate control mode (0x12):CBR CQP 
  
  RateControl mode : CQP
  
  Support VAConfigAttribEncPackedHeaders
  
  Support packed sequence headers
  
  Support packed picture headers
  
  Support packed slice headers
  
  Support packed misc headers
  
  Support 1 RefPicList0 and 1 RefPicList1
  
  Loading data into surface 15.....Complete surface loading
  
        \00000059(054456 bytes coded)
  PERFORMANCE :   Frame Rate : 5.59 fps (60 frames, 10730 ms (178.83 ms per frame))
  
  PERFORMANCE :   Compression ratio : 51:1
  
  PERFORMANCE :     UploadPicture : 10467 ms (174.45, 97.55% percent)
  
  PERFORMANCE :     vaBeginPicture : 0 ms (0.00, 0.00% percent)
  
  PERFORMANCE :     vaRenderHeader : 1 ms (0.02, 0.01% percent)
  
  PERFORMANCE :     vaEndPicture : 42 ms (0.70, 0.39% percent)
  
  PERFORMANCE :     vaSyncSurface : 244 ms (4.07, 2.27% percent)
  
  PERFORMANCE :     SavePicture : 7 ms (0.12, 0.07% percent)
  
  PERFORMANCE :     Others : -31 ms (71582787.75, 40027653.91% percent)
  
  (Multithread enabled, the timing is only for reference)
  

  i’ve seen https://www.reddit.com/r/linux/comments/1qk1yu/is_there_currently_opensource_software_to_encode/ though but i’m not sure what do do with it.

• I can't use HW encoder of QSV by ffmpeg

  6 novembre 2017, par Ubunkun

  I would like to use to encode by Intel H/W encode QSV.

  Intel(R) Core(TM) i7-5650U CPU @ 2.20GHz

  lspci -nn -s 0:02.0
  00:02.0 VGA compatible controller [0300] : Intel Corporation Broadwell-U Integrated Graphics [8086:1626] (rev 09)

  I could install MediaServerStudioEssentials2017R2 and ffpemg.

  # vainfo | grep -v 'unknown'
  
  error: can't connect to X server!
  
  libva info: VA-API version 0.99.0
  
  libva info: va_getDriverName() returns 0
  
  libva info: User requested driver 'iHD'
  
  libva info: Trying to open /opt/intel/mediasdk/lib64/iHD_drv_video.so
  
  libva info: Found init function __vaDriverInit_0_32
  
  libva info: va_openDriver() returns 0
  
  vainfo: VA-API version: 0.99 (libva 1.67.0.pre1)
  
  vainfo: Driver version: 16.5.1.59511-ubit
  
  vainfo: Supported profile and entrypoints
  
        VAProfileH264ConstrainedBaseline: VAEntrypointVLD
  
        VAProfileH264ConstrainedBaseline: VAEntrypointEncSlice
  
        VAProfileH264Main               : VAEntrypointVLD
  
        VAProfileH264Main               : VAEntrypointEncSlice
  
        VAProfileH264High               : VAEntrypointVLD
  
        VAProfileH264High               : VAEntrypointEncSlice
  
        VAProfileMPEG2Simple            : VAEntrypointEncSlice
  
        VAProfileMPEG2Simple            : VAEntrypointVLD
  
        VAProfileMPEG2Main              : VAEntrypointEncSlice
  
        VAProfileMPEG2Main              : VAEntrypointVLD
  
        VAProfileVC1Advanced            : VAEntrypointVLD
  
        VAProfileVC1Main                : VAEntrypointVLD
  
        VAProfileVC1Simple              : VAEntrypointVLD
  
        VAProfileJPEGBaseline           : VAEntrypointVLD
  
        VAProfileJPEGBaseline           : VAEntrypointEncPicture
  
        VAProfileVP8Version0_3          : VAEntrypointEncSlice
  
        VAProfileVP8Version0_3          : VAEntrypointVLD
  
        VAProfileNone                   : VAEntrypointVideoProc

  and

  # ffmpeg -codecs | grep qsv
  
  ffmpeg version N-86584-g4976a34 Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-11)
  
    configuration: --enable-libmfx
  
    libavutil      55. 66.100 / 55. 66.100
  
    libavcodec     57. 99.100 / 57. 99.100
  
    libavformat    57. 73.100 / 57. 73.100
  
    libavdevice    57.  7.100 / 57.  7.100
  
    libavfilter     6. 94.100 /  6. 94.100
  
    libswscale      4.  7.101 /  4.  7.101
  
    libswresample   2.  8.100 /  2.  8.100
  
   DEV.LS h264                 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (decoders: h264 h264_qsv h264_cuvid ) (encoders: h264_nvenc h264_qsv h264_vaapi nvenc nvenc_h264 )
  
   DEV.L. hevc                 H.265 / HEVC (High Efficiency Video Coding) (decoders: hevc hevc_qsv hevc_cuvid ) (encoders: nvenc_hevc hevc_nvenc hevc_qsv hevc_vaapi )
  
   DEV.L. mpeg2video           MPEG-2 video (decoders: mpeg2video mpegvideo mpeg2_qsv mpeg2_cuvid ) (encoders: mpeg2video mpeg2_qsv mpeg2_vaapi )
  
   D.V.L. vc1                  SMPTE VC-1 (decoders: vc1 vc1_qsv vc1_cuvid )
  
   DEV.L. vp8                  On2 VP8 (decoders: vp8 vp8_cuvid vp8_qsv ) (encoders: vp8_vaapi )

  But, I tried to encode as below.

  # ffmpeg -i test.avi -c:v h264_qsv -b:v 2000k -r 30 -s 720x480 -acodec copy -look_ahead 0 qsv.mp4
  
  ・・・
  
  [h264_qsv @ 0x3139f40] No device available for encoder (device type qsv for codec h264_qsv).
  
  [h264_qsv @ 0x3139f40] Encoder will work with partial HW acceleration
  
  [h264_qsv @ 0x3139f40] Warning in encoder initialization: partial acceleration (4)
  
  ・・・

  It seems like that the encoding is using by software. It’s slow.
  How can I do by H/W encode ? If you know it, let me know it.

  Bests,

• php ffmpeg installation on windows

  16 juillet 2017, par techtech

  I downloaded ffmpeg and installed it composer. when I try to use the basic usage code I’m getting this error. In the bin folder, I have ffmpeg, ffplay and ffprobe exe files. Also I have environment variable set for the c:ffmpeg\bin.

  Fatal error : Uncaught exception
  ’Alchemy\BinaryDriver\Exception\ExecutableNotFoundException’ with message ’Executable not found, proposed : c :\ffmpeg\bin\binffprobe.exe’ in C :\xampp\htdocs\core\vendor\alchemy\binary-driver\src\Alchemy\BinaryDriver\AbstractBinary.php:160 Stack trace : #0
  C :\xampp\htdocs\core\vendor\php-ffmpeg\php-ffmpeg\src\FFMpeg\Driver\FFProbeDriver.php(48) : Alchemy\BinaryDriver\AbstractBinary::load(’c :\ffmpeg\bin\b...’, NULL, Object(Alchemy\BinaryDriver\Configuration)) #1 C :\xampp\htdocs\core\vendor\php-ffmpeg\php-ffmpeg\src\FFMpeg\FFProbe.php(207) : FFMpeg\Driver\FFProbeDriver::create(Array, NULL) #2 C :\xampp\htdocs\core\vendor\php-ffmpeg\php-ffmpeg\src\FFMpeg\FFMpeg.php(117) : FFMpeg\FFProbe::create(Array, NULL, NULL) #3 C :\xampp\htdocs\core\demo2.php(9) : FFMpeg\FFMpeg::create(Array) #4 main Next exception ’FFMpeg\Exception\ExecutableNotFoundException’ with message ’Unable to load FFProbe’ in C :\xampp\htdocs\core\vendor\php-ffmpeg\php-ffmpeg\src\FFMpeg\Driver\FFProbeDriver.php:50 Stack trace : #0 C : in C :\xampp\htdocs\core\vendor\php-ffmpeg\php-ffmpeg\src\FFMpeg\Driver\FFProbeDriver.php on line 50

  This is my php code ;

    require_once 'vendor/autoload.php';
  
    $ffmpeg = \FFMpeg\FFMpeg::create([
  
  'ffmpeg.binaries'  => 'c:\ffmpeg\bin\binffmpeg.exe',
  
  'ffprobe.binaries' => 'c:\ffmpeg\bin\binffprobe.exe' 
  
    ]);
  
  
  
    $video = $ffmpeg->open('video.mpg');
  
   $video
  
  ->filters()
  
  ->resize(new FFMpeg\Coordinate\Dimension(320, 240))
  
  ->synchronize();
  
   $video
  
  ->frame(FFMpeg\Coordinate\TimeCode::fromSeconds(10))
  
  ->save('frame.jpg');
  
  $video
  
  ->save(new FFMpeg\Format\Video\X264(), 'export-x264.mp4')
  
  ->save(new FFMpeg\Format\Video\WMV(), 'export-wmv.wmv')
  
  ->save(new FFMpeg\Format\Video\WebM(), 'export-webm.webm');`