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  1. >ffmpeg -f alsa -ac 1 -ar 44100 -i default -itsoffset 00:00:00 -f video4linux2 -s 1280x720 -r 25 -i /dev/video1 -strict -2 output.mp4
  2.  
  3. ffmpeg version 2.4.3-1ubuntu1~trusty6 Copyright (c) 2000-2014 the FFmpeg developers
  4. built on Nov 22 2014 17:07:19 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
  5. configuration: --prefix=/usr --extra-version='1ubuntu1~trusty6' --build-suffix=-ffmpeg --toolchain=hardened --extra-cflags= --extra-cxxflags= --libdir=/usr/lib/x86_64-linux-gnu --shlibdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --enable-shared --disable-stripping --enable-avresample --enable-avisynth --enable-fontconfig --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-opengl --enable-x11grab --enable-libxvid --enable-libx265 --enable-libdc1394 --enable-libiec61883 --enable-libzvbi --enable-libzmq --enable-frei0r --enable-libx264 --enable-libsoxr --enable-openal --enable-libopencv
  6. libavutil 54. 7.100 / 54. 7.100
  7. libavcodec 56. 1.100 / 56. 1.100
  8. libavformat 56. 4.101 / 56. 4.101
  9. libavdevice 56. 0.100 / 56. 0.100
  10. libavfilter 5. 1.100 / 5. 1.100
  11. libavresample 2. 1. 0 / 2. 1. 0
  12. libswscale 3. 0.100 / 3. 0.100
  13. libswresample 1. 1.100 / 1. 1.100
  14. libpostproc 53. 0.100 / 53. 0.100
  15. Guessed Channel Layout for Input Stream #0.0 : mono
  16. Input #0, alsa, from 'default':
  17. Duration: N/A, start: 1448737826.918261, bitrate: 705 kb/s
  18. Stream #0:0: Audio: pcm_s16le, 44100 Hz, 1 channels, s16, 705 kb/s
  19. [video4linux2,v4l2 @ 0x21f9f60] The driver changed the time per frame from 1/25 to 1/10
  20. Input #1, video4linux2,v4l2, from '/dev/video1':
  21. Duration: N/A, start: 741.109234, bitrate: 147456 kb/s
  22. Stream #1:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 1280x720, 147456 kb/s, 10 fps, 10 tbr, 1000k tbn, 1000k tbc
  23. File 'output.mp4' already exists. Overwrite ? [y/N] y
  24. No pixel format specified, yuv422p for H.264 encoding chosen.
  25. Use -pix_fmt yuv420p for compatibility with outdated media players.
  26. [libx264 @ 0x21fbc60] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX AVX2 FMA3 LZCNT BMI2
  27. [libx264 @ 0x21fbc60] profile High 4:2:2, level 3.1, 4:2:2 8-bit
  28. [libx264 @ 0x21fbc60] 264 - core 142 r2389 956c8d8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  29. Output #0, mp4, to 'output.mp4':
  30. Metadata:
  31. encoder : Lavf56.4.101
  32. Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv422p, 1280x720, q=-1--1, 25 fps, 12800 tbn, 25 tbc
  33. Metadata:
  34. encoder : Lavc56.1.100 libx264
  35. Stream #0:1: Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, mono, fltp, 128 kb/s
  36. Metadata:
  37. encoder : Lavc56.1.100 aac
  38. Stream mapping:
  39. Stream #1:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
  40. Stream #0:0 -> #0:1 (pcm_s16le (native) -> aac (native))
  41. Press [q] to stop, [?] for help
  42. frame= 513 fps= 10 q=-1.0 Lsize= 7869kB time=00:00:51.73 bitrate=1246.0kbits/s
  43. video:7028kB audio:810kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.391643%
  44. [libx264 @ 0x21fbc60] frame I:3 Avg QP:22.46 size: 92696
  45. [libx264 @ 0x21fbc60] frame P:191 Avg QP:24.77 size: 23025
  46. [libx264 @ 0x21fbc60] frame B:319 Avg QP:26.25 size: 7900
  47. [libx264 @ 0x21fbc60] consecutive B-frames: 2.9% 37.8% 14.0% 45.2%
  48. [libx264 @ 0x21fbc60] mb I I16..4: 19.2% 61.8% 19.0%
  49. [libx264 @ 0x21fbc60] mb P I16..4: 1.6% 3.4% 0.3% P16..4: 49.8% 11.9% 13.4% 0.0% 0.0% skip:19.7%
  50. [libx264 @ 0x21fbc60] mb B I16..4: 0.1% 0.2% 0.0% B16..8: 23.6% 0.8% 0.2% direct:16.2% skip:58.8% L0:46.8% L1:45.7% BI: 7.5%
  51. [libx264 @ 0x21fbc60] 8x8 transform intra:63.5% inter:84.8%
  52. [libx264 @ 0x21fbc60] coded y,uvDC,uvAC intra: 34.7% 76.9% 70.9% inter: 8.2% 50.1% 24.9%
  53. [libx264 @ 0x21fbc60] i16 v,h,dc,p: 16% 13% 4% 67%
  54. [libx264 @ 0x21fbc60] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 19% 11% 35% 5% 7% 6% 6% 5% 5%
  55. [libx264 @ 0x21fbc60] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 26% 17% 14% 6% 9% 8% 9% 5% 5%
  56. [libx264 @ 0x21fbc60] i8c dc,h,v,p: 63% 8% 16% 12%
  57. [libx264 @ 0x21fbc60] Weighted P-Frames: Y:7.3% UV:7.3%
  58. [libx264 @ 0x21fbc60] ref P L0: 47.6% 7.8% 29.6% 14.4% 0.8%
  59. [libx264 @ 0x21fbc60] ref B L0: 61.6% 32.9% 5.5%
  60. [libx264 @ 0x21fbc60] ref B L1: 88.2% 11.8%
  61. [libx264 @ 0x21fbc60] kb/s:2805.47
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