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  1. $ ffmpeg -video_size 1920x1080 -framerate 30 -f x11grab -i :0.0+1920,0 -f pulse -ac 6 -i default -c:v libx264 -preset ultrafast output.mkv
  2. ffmpeg version 2.6.git Copyright (c) 2000-2015 the FFmpeg developers
  3. built with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
  4. configuration: --prefix=/home/user/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/user/ffmpeg_build/include --extra-ldflags=-L/home/user/ffmpeg_build/lib --bindir=/home/user/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libpulse --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree
  5. libavutil 54. 26.100 / 54. 26.100
  6. libavcodec 56. 41.100 / 56. 41.100
  7. libavformat 56. 33.101 / 56. 33.101
  8. libavdevice 56. 4.100 / 56. 4.100
  9. libavfilter 5. 16.101 / 5. 16.101
  10. libswscale 3. 1.101 / 3. 1.101
  11. libswresample 1. 1.100 / 1. 1.100
  12. libpostproc 53. 3.100 / 53. 3.100
  13. Input #0, x11grab, from ':0.0+1920,0':
  14. Duration: N/A, start: 1432819889.694093, bitrate: N/A
  15. Stream #0:0: Video: rawvideo (BGR[0] / 0x524742), bgr0, 1920x1080, 30 fps, 30 tbr, 1000k tbn, 30 tbc
  16. Guessed Channel Layout for Input Stream #1.0 : 5.1
  17. Input #1, pulse, from 'default':
  18. Duration: N/A, start: 1432819889.702687, bitrate: 4608 kb/s
  19. Stream #1:0: Audio: pcm_s16le, 48000 Hz, 6 channels, s16, 4608 kb/s
  20. File 'output.mkv' already exists. Overwrite ? [y/N] y
  21. No pixel format specified, yuv444p for H.264 encoding chosen.
  22. Use -pix_fmt yuv420p for compatibility with outdated media players.
  23. [libx264 @ 0x2ba5d00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX AVX2 FMA3 LZCNT BMI2
  24. [libx264 @ 0x2ba5d00] profile High 4:4:4 Predictive, level 4.0, 4:4:4 8-bit
  25. [libx264 @ 0x2ba5d00] 264 - core 142 r2389 956c8d8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=6 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=0 intra_refresh=0 rc=crf mbtree=0 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0
  26. Output #0, matroska, to 'output.mkv':
  27. Metadata:
  28. encoder : Lavf56.33.101
  29. Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv444p, 1920x1080, q=-1--1, 30 fps, 1k tbn, 30 tbc
  30. Metadata:
  31. encoder : Lavc56.41.100 libx264
  32. Stream #0:1: Audio: vorbis (libvorbis) (oV[0][0] / 0x566F), 48000 Hz, 5.1, fltp
  33. Metadata:
  34. encoder : Lavc56.41.100 libvorbis
  35. Stream mapping:
  36. Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
  37. Stream #1:0 -> #0:1 (pcm_s16le (native) -> vorbis (libvorbis))
  38. Press [q] to stop, [?] for help
  39. [x11grab @ 0x2b92e20] Thread message queue blocking; consider raising the thread_queue_size option (current value: 8)
  40. [pulse @ 0x2b9b200] Thread message queue blocking; consider raising the thread_queue_size option (current value: 8)
  41. [libvorbis @ 0x2ba6c40] Queue input is backward in time
  42. Last message repeated 16 times
  43. [matroska @ 0x2ba4be0] Non-monotonous DTS in output stream 0:1; previous: 0, current: -54; changing to 0. This may result in incorrect timestamps in the output file.
  44. [libvorbis @ 0x2ba6c40] Queue input is backward in time
  45. [matroska @ 0x2ba4be0] Non-monotonous DTS in output stream 0:1; previous: 0, current: -61; changing to 0. This may result in incorrect timestamps in the output file.
  46. [matroska @ 0x2ba4be0] Non-monotonous DTS in output stream 0:1; previous: 0, current: -93; changing to 0. This may result in incorrect timestamps in the output file.
  47. [matroska @ 0x2ba4be0] Non-monotonous DTS in output stream 0:1; previous: 0, current: -91; changing to 0. This may result in incorrect timestamps in the output file.
  48. [matroska @ 0x2ba4be0] Non-monotonous DTS in output stream 0:1; previous: 0, current: -74; changing to 0. This may result in incorrect timestamps in the output file.
  49. [matroska @ 0x2ba4be0] Non-monotonous DTS in output stream 0:1; previous: 0, current: -53; changing to 0. This may result in incorrect timestamps in the output file.
  50. [matroska @ 0x2ba4be0] Non-monotonous DTS in output stream 0:1; previous: 0, current: -31; changing to 0. This may result in incorrect timestamps in the output file.
  51. [libvorbis @ 0x2ba6c40] Queue input is backward in time
  52. [matroska @ 0x2ba4be0] Non-monotonous DTS in output stream 0:1; previous: 0, current: -8; changing to 0. This may result in incorrect timestamps in the output file.
  53. [libvorbis @ 0x2ba6c40] Queue input is backward in time2.40 bitrate=2745.4kbits/s dup=0 drop=53
  54. Past duration 0.998619 too large 883kB time=00:00:02.96 bitrate=2439.3kbits/s dup=0 drop=56
  55. [libvorbis @ 0x2ba6c40] Queue input is backward in time3.46 bitrate=2264.0kbits/s dup=0 drop=56
  56. Past duration 0.999367 too large
  57. [libvorbis @ 0x2ba6c40] Queue input is backward in time4.46 bitrate=2010.2kbits/s dup=0 drop=56
  58. [libvorbis @ 0x2ba6c40] Queue input is backward in time4.96 bitrate=1935.2kbits/s dup=0 drop=56
  59. [libvorbis @ 0x2ba6c40] Queue input is backward in time5.96 bitrate=1818.0kbits/s dup=0 drop=56
  60. [libvorbis @ 0x2ba6c40] Queue input is backward in time6.46 bitrate=1777.1kbits/s dup=0 drop=56
  61. [libvorbis @ 0x2ba6c40] Queue input is backward in time8.00 bitrate=1649.9kbits/s dup=0 drop=56
  62. Past duration 0.944695 too large
  63. Past duration 0.999489 too large 1743kB time=00:00:09.00 bitrate=1586.3kbits/s dup=0 drop=56
  64. [libvorbis @ 0x2ba6c40] Queue input is backward in time9.50 bitrate=1561.6kbits/s dup=0 drop=56
  65. frame= 270 fps= 30 q=-1.0 Lsize= 2674kB time=00:00:10.90 bitrate=2009.6kbits/s dup=0 drop=56
  66. video:2660kB audio:1kB subtitle:0kB other streams:0kB global headers:7kB muxing overhead: 0.490142%
  67. [libx264 @ 0x2ba5d00] frame I:2 Avg QP:15.00 size:575910
  68. [libx264 @ 0x2ba5d00] frame P:268 Avg QP:13.33 size: 5863
  69. [libx264 @ 0x2ba5d00] mb I I16..4: 100.0% 0.0% 0.0%
  70. [libx264 @ 0x2ba5d00] mb P I16..4: 0.1% 0.0% 0.0% P16..4: 2.3% 0.0% 0.0% 0.0% 0.0% skip:97.6%
  71. [libx264 @ 0x2ba5d00] coded y,u,v intra: 36.8% 21.5% 24.7% inter: 1.3% 0.3% 0.4%
  72. [libx264 @ 0x2ba5d00] i16 v,h,dc,p: 55% 38% 5% 2%
  73. [libx264 @ 0x2ba5d00] kb/s:1998.57
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