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• 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,

• Slow VP8 and VP9 encoding with ffmpeg

  25 mai 2019, par Kirill K

  I saw this answer, but it’s a little old. Maybe the situation has changed ?

  I want to re-encode a stream from an IP camera to WebM (VP8 or VP9) format with ffmpeg. I need real time speed, but my CPU is a Core i5 (2017) and too busy (load avarage too more 100%).

  • Can I buy hardware that is better suited for such an encoding task ?

  • What parametres for ffmpeg are recommended for transcoding in realtime ?

  At the moment I’m using this command (with overlay chroma key) :

  ./ffmpeg \
  
  -i \
  
  bg.jpg \
  
  -thread_queue_size 512 \
  
  -rtsp_transport tcp -i rtsp://ip_cam:port/stream \
  
  -codec:v libvpx -quality realtime -r 25 -crf 30 \
  
  -b:v 2M -qmin 10 -qmax 50 -maxrate 2.5M -bufsize 5M \
  
  -speed 1 \
  
  -b:v 2M \
  
  -cpu-used 0 -threads 4 \
  
  -auto-alt-ref 0 \
  
  -c:a libopus -b:a 96k \
  
  -filter_complex "[1:v]chromakey=0x70de77:0.1:0.0[ckout];[0:v][ckout]overlay[out]" \
  
  -map "[out]" \
  
  -f webm udp://ip_destination:1935/name/stream

• RTMP -> endoce using ffmpeg -> HLS,DASH

  1er juillet 2017, par Ubunkun

  I would like to do "RTMP -> endoce using ffmpeg -> HLS,DASH".

  ・OS: CentOS7
  
  ・nginx version: nginx/1.13.0
  
  　with nginx-rtmp-module
  
  ・ffmpeg
  
  ffmpeg version N-83692-gb8a7dcbde2-static http://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 5.4.1 (Debian 5.4.1-5) 20170205
  
    configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-5 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gray --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzimg
  
    libavutil      55. 47.100 / 55. 47.100
  
    libavcodec     57. 81.100 / 57. 81.100
  
    libavformat    57. 66.102 / 57. 66.102
  
    libavdevice    57.  3.100 / 57.  3.100
  
    libavfilter     6. 74.100 /  6. 74.100
  
    libswscale      4.  3.101 /  4.  3.101
  
    libswresample   2.  4.100 /  2.  4.100
  
    libpostproc    54.  2.100 / 54.  2.100
  
  
  
  /usr/local/nginx/conf/nginx.conf
  
  rtmp {
  
    server {
  
        listen 1935;
  
        application test {
  
          live on;
  
          exec /root/ffmpeg -i rtmp://localhost/test/$name
  
          -b:v 1000k -r 30 -s 720x480 -c:v libx264 -f flv rtmp://localhost/live/$name_low;
  
        }
  
        application live {
  
          live on;
  
          hls  on;
  
          hls_path /usr/local/nginx/html/hls;
  
          hls_fragment 10s;
  
          hls_type live;
  
          dash on;
  
          dash_path /usr/local/nginx/html/dash;
  
        }
  
    }
  
  }

  When I tried "rtmp ://domain.com/live/test1", it was success. There are some segment on hls and dash folder.

  But, When I teird "rtmp ://domain.com/test/test2", it was fail.

  In error.log

  2017/07/01 22:02:03 [alert] 23951#0 : unknown process 24019 exited on signal 9

  What wrong is setting ? If you know the cause of problem, let me know how to resolve it.