env PULSE_LATENCY_MSEC=20 LD_LIBRARY_PATH=/home/usuario/ffmpeg_linux/lib /home/usuario/ffmpeg_linux/bin/ffmpeg -report -vaapi_device /dev/dri/renderD128 -hwaccel vaapi -hwaccel_output_format vaapi -thread_queue_size 2048 -f pulse -channels 2 -i alsa_output.pci-0000_00_1f.3.analog-stereo.monitor -thread_queue_size 2048 -f pulse -channels 1 -i alsa_input.pci-0000_00_1f.3.analog-stereo -r 30 -thread_queue_size 2048 -f x11grab -probesize 12M -s 1366x768 -i :0.0+0,0 -muxpreload 1 -filter_complex amix=inputs=2 -acodec libopus -application lowdelay -vf format=nv12,hwupload -muxpreload 1 -vcodec vp8_vaapi -threads 4 -r 30 -f webm -flags +global_header gvando000.webm
ffmpeg started on 2018-04-14 at 16:24:09
Report written to "ffmpeg-20180414-162409.log"
ffmpeg version N-90709-ga56580b117 Copyright (c) 2000-2018 the FFmpeg developers
  built with gcc 7 (Ubuntu 7.3.0-16ubuntu2)
  configuration: --prefix=/home/usuario/ffmpeg_linux --enable-gpl --enable-libfontconfig --enable-libxcb --enable-libxcb-shm --enable-libxcb-xfixes --enable-libxcb-shape --enable-libpulse --enable-vaapi --enable-libfreetype --enable-libfdk_aac --enable-libopus --enable-libvorbis --enable-libx264 --enable-libvpx --enable-nonfree --disable-doc --disable-ffprobe --disable-ffplay
  libavutil      56. 13.100 / 56. 13.100
  libavcodec     58. 17.100 / 58. 17.100
  libavformat    58. 11.101 / 58. 11.101
  libavdevice    58.  2.100 / 58.  2.100
  libavfilter     7. 15.100 /  7. 15.100
  libswscale      5.  0.102 /  5.  0.102
  libswresample   3.  0.101 /  3.  0.101
  libpostproc    55.  0.100 / 55.  0.100
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, pulse, from 'alsa_output.pci-0000_00_1f.3.analog-stereo.monitor':
  Duration: N/A, start: 1523733849.806335, bitrate: 1536 kb/s
    Stream #0:0: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
Guessed Channel Layout for Input Stream #1.0 : mono
Input #1, pulse, from 'alsa_input.pci-0000_00_1f.3.analog-stereo':
  Duration: N/A, start: 1523733849.835363, bitrate: 768 kb/s
    Stream #1:0: Audio: pcm_s16le, 48000 Hz, mono, s16, 768 kb/s
Input #2, x11grab, from ':0.0+0,0':
  Duration: N/A, start: 1523733849.879786, bitrate: N/A
    Stream #2:0: Video: rawvideo (BGR[0] / 0x524742), bgr0, 1366x768, 30 fps, 30 tbr, 1000k tbn, 1000k tbc
Stream mapping:
  Stream #0:0 (pcm_s16le) -> amix:input0 (graph 0)
  Stream #1:0 (pcm_s16le) -> amix:input1 (graph 0)
  amix (graph 0) -> Stream #0:0 (libopus)
  Stream #2:0 -> #0:1 (rawvideo (native) -> vp8 (vp8_vaapi))
Press [q] to stop, [?] for help
[libopus @ 0x55ef537c53c0] No bit rate set. Defaulting to 96000 bps.
[swscaler @ 0x55ef5381c480] Warning: data is not aligned! This can lead to a speed loss
Output #0, webm, to 'gvando000.webm':
  Metadata:
    encoder         : Lavf58.11.101
    Stream #0:0: Audio: opus (libopus), 48000 Hz, stereo, flt, 96 kb/s (default)
    Metadata:
      encoder         : Lavc58.17.100 libopus
    Stream #0:1: Video: vp8 (vp8_vaapi), vaapi_vld, 1366x768, q=2-31, 30 fps, 1k tbn, 30 tbc
    Metadata:
      encoder         : Lavc58.17.100 vp8_vaapi
[libopus @ 0x55ef537c53c0] Queue input is backward in time0 bitrate=1078.8kbits/s speed=1.01x
    Last message repeated 5 times
[libopus @ 0x55ef537c53c0] Queue input is backward in time0 bitrate=1036.8kbits/s speed=1.01x
    Last message repeated 22 times
[libopus @ 0x55ef537c53c0] Queue input is backward in time7 bitrate=1007.5kbits/s speed=0.995x
    Last message repeated 21 times
[libopus @ 0x55ef537c53c0] Queue input is backward in time3 bitrate= 979.9kbits/s speed=0.985x
    Last message repeated 21 times
[libopus @ 0x55ef537c53c0] Queue input is backward in time1 bitrate= 953.6kbits/s speed=0.976x
    Last message repeated 18 times
[libopus @ 0x55ef537c53c0] Queue input is backward in time0 bitrate= 927.3kbits/s speed=0.969x
    Last message repeated 22 times
[libopus @ 0x55ef537c53c0] Queue input is backward in time9 bitrate= 902.0kbits/s speed=0.963x
    Last message repeated 20 times
[libopus @ 0x55ef537c53c0] Queue input is backward in time6 bitrate= 879.8kbits/s speed=0.956x
    Last message repeated 19 times
[libopus @ 0x55ef537c53c0] Queue input is backward in time6 bitrate= 856.9kbits/s speed=0.951x
    Last message repeated 19 times
[libopus @ 0x55ef537c53c0] Queue input is backward in time7 bitrate= 834.7kbits/s speed=0.947x
    Last message repeated 19 times
[libopus @ 0x55ef537c53c0] Queue input is backward in time6 bitrate=1090.7kbits/s speed=0.942x
    Last message repeated 19 times
[libopus @ 0x55ef537c53c0] Queue input is backward in time6 bitrate=1064.4kbits/s speed=0.938x
    Last message repeated 20 times
[libopus @ 0x55ef537c53c0] Queue input is backward in time6 bitrate=1039.3kbits/s speed=0.933x
    Last message repeated 19 times
[libopus @ 0x55ef537c53c0] Queue input is backward in time8 bitrate=1014.5kbits/s speed=0.93x
    Last message repeated 22 times
[libopus @ 0x55ef537c53c0] Queue input is backward in time6 bitrate= 992.5kbits/s speed=0.926x
    Last message repeated 20 times
[libopus @ 0x55ef537c53c0] Queue input is backward in time6 bitrate= 971.0kbits/s speed=0.922x
    Last message repeated 20 times
[libopus @ 0x55ef537c53c0] Queue input is backward in time6 bitrate= 950.1kbits/s speed=0.919x
    Last message repeated 4 times
frame= 1011 fps= 29 q=-0.0 Lsize=    4589kB time=00:00:33.70 bitrate=1115.4kbits/s speed=0.954x
video:4122kB audio:447kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.442279%