Matroska

$ ./ffmpeg -f lavfi -i testsrc -t 10 -c:v libx264 -preset veryfast test.mkv
ffmpeg version N-71838-gd56245f Copyright (c) 2000-2015 the FFmpeg developers
  built with gcc 4.9.2 (Rev5, Built by MSYS2 project)
  configuration: --enable-gpl --enable-nonfree --enable-libdcadec --enable-libfdk-aac --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-openssl --enable-opengl --disable-decoder=dca --target-os=mingw32 --arch=x86_64 --cc='ccache gcc' --cpu=amdfam10 --extra-cflags='-D_WIN32_WINNT=0x0600' --prefix=/mingw64
  libavutil      54. 23.101 / 54. 23.101
  libavcodec     56. 35.101 / 56. 35.101
  libavformat    56. 31.100 / 56. 31.100
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 14.100 /  5. 14.100
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  1.100 /  1.  1.100
  libpostproc    53.  3.100 / 53.  3.100
Input #0, lavfi, from 'testsrc':
  Duration: N/A, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 320x240 [SAR 1:1 DAR 4:3], 25 tbr, 25 tbn, 25 tbc
No pixel format specified, yuv444p for H.264 encoding chosen.
Use -pix_fmt yuv420p for compatibility with outdated media players.
[libx264 @ 000000000031cea0] using SAR=1/1
[libx264 @ 000000000031cea0] using cpu capabilities: MMX2 SSE2Fast LZCNT
[libx264 @ 000000000031cea0] profile High 4:4:4 Predictive, level 1.3, 4:4:4 8-bit
[libx264 @ 000000000031cea0] 264 - core 144 r2525 40bb568 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=1 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=2 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=6 threads=3 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=1 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=10 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, matroska, to 'test.mkv':
  Metadata:
    encoder         : Lavf56.31.100
    Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv444p, 320x240 [SAR 1:1 DAR 4:3], q=-1--1, 25 fps, 1k tbn, 25 tbc
    Metadata:
      encoder         : Lavc56.35.101 libx264
Stream mapping:
  Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
Press [q] to stop, [?] for help
frame=  250 fps=0.0 q=-1.0 Lsize=      51kB time=00:00:09.92 bitrate=  42.0kbits/s
video:49kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 4.574364%
[libx264 @ 000000000031cea0] frame I:1     Avg QP:17.40  size:  2860
[libx264 @ 000000000031cea0] frame P:77    Avg QP:14.84  size:   487
[libx264 @ 000000000031cea0] frame B:172   Avg QP:14.98  size:    51
[libx264 @ 000000000031cea0] consecutive B-frames:  8.0%  0.8%  0.0% 91.2%
[libx264 @ 000000000031cea0] mb I  I16..4: 64.3%  9.7% 26.0%
[libx264 @ 000000000031cea0] mb P  I16..4:  3.6%  1.8%  0.5%  P16..4:  7.1%  3.8%  1.3%  0.0%  0.0%    skip:82.1%
[libx264 @ 000000000031cea0] mb B  I16..4:  0.4%  0.1%  0.0%  B16..8:  1.1%  0.1%  0.0%  direct: 0.4%  skip:98.0%  L0:49.0% L1:50.5% BI: 0.5%
[libx264 @ 000000000031cea0] 8x8 transform intra:24.7% inter:24.4%
[libx264 @ 000000000031cea0] coded y,u,v intra: 10.5% 16.4% 12.4% inter: 0.8% 0.9% 0.7%
[libx264 @ 000000000031cea0] i16 v,h,dc,p: 46% 42%  1% 12%
[libx264 @ 000000000031cea0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 89%  2%  8%  0%  0%  0%  0%  0%  0%
[libx264 @ 000000000031cea0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 26% 50% 20%  0%  1%  1%  0%  1%  1%
[libx264 @ 000000000031cea0] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 000000000031cea0] kb/s:39.32

$ ./ffmpeg -i test.mkv
ffmpeg version N-71838-gd56245f Copyright (c) 2000-2015 the FFmpeg developers
  built with gcc 4.9.2 (Rev5, Built by MSYS2 project)
  configuration: --enable-gpl --enable-nonfree --enable-libdcadec --enable-libfdk-aac --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-openssl --enable-opengl --disable-decoder=dca --target-os=mingw32 --arch=x86_64 --cc='ccache gcc' --cpu=amdfam10 --extra-cflags='-D_WIN32_WINNT=0x0600' --prefix=/mingw64
  libavutil      54. 23.101 / 54. 23.101
  libavcodec     56. 35.101 / 56. 35.101
  libavformat    56. 31.100 / 56. 31.100
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 14.100 /  5. 14.100
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  1.100 /  1.  1.100
  libpostproc    53.  3.100 / 53.  3.100
Input #0, matroska,webm, from 'test.mkv':
  Metadata:
    ENCODER         : Lavf56.31.100
  Duration: 00:00:10.08, start: 0.080000, bitrate: 41 kb/s
    Stream #0:0: Video: h264 (High 4:4:4 Predictive), yuv444p, 320x240 [SAR 1:1 DAR 4:3], 25 fps, 25 tbr, 1k tbn, 50 tbc (default)
    Metadata:
      ENCODER         : Lavc56.35.101 libx264
At least one output file must be specified


MP4

$ ./ffmpeg -f lavfi -i testsrc -t 10 -c:v libx264 -preset veryfast test.mp4
ffmpeg version N-71838-gd56245f Copyright (c) 2000-2015 the FFmpeg developers
  built with gcc 4.9.2 (Rev5, Built by MSYS2 project)
  configuration: --enable-gpl --enable-nonfree --enable-libdcadec --enable-libfdk-aac --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-openssl --enable-opengl --disable-decoder=dca --target-os=mingw32 --arch=x86_64 --cc='ccache gcc' --cpu=amdfam10 --extra-cflags='-D_WIN32_WINNT=0x0600' --prefix=/mingw64
  libavutil      54. 23.101 / 54. 23.101
  libavcodec     56. 35.101 / 56. 35.101
  libavformat    56. 31.100 / 56. 31.100
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 14.100 /  5. 14.100
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  1.100 /  1.  1.100
  libpostproc    53.  3.100 / 53.  3.100
Input #0, lavfi, from 'testsrc':
  Duration: N/A, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 320x240 [SAR 1:1 DAR 4:3], 25 tbr, 25 tbn, 25 tbc
No pixel format specified, yuv444p for H.264 encoding chosen.
Use -pix_fmt yuv420p for compatibility with outdated media players.
[libx264 @ 000000000031cea0] using SAR=1/1
[libx264 @ 000000000031cea0] using cpu capabilities: MMX2 SSE2Fast LZCNT
[libx264 @ 000000000031cea0] profile High 4:4:4 Predictive, level 1.3, 4:4:4 8-bit
[libx264 @ 000000000031cea0] 264 - core 144 r2525 40bb568 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=1 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=2 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=6 threads=3 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=1 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=10 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'test.mp4':
  Metadata:
    encoder         : Lavf56.31.100
    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv444p, 320x240 [SAR 1:1 DAR 4:3], q=-1--1, 25 fps, 12800 tbn, 25 tbc
    Metadata:
      encoder         : Lavc56.35.101 libx264
Stream mapping:
  Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
Press [q] to stop, [?] for help
frame=  250 fps=0.0 q=-1.0 Lsize=      52kB time=00:00:09.92 bitrate=  43.2kbits/s
video:49kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 7.455410%
[libx264 @ 000000000031cea0] frame I:1     Avg QP:17.40  size:  2860
[libx264 @ 000000000031cea0] frame P:77    Avg QP:14.84  size:   487
[libx264 @ 000000000031cea0] frame B:172   Avg QP:14.98  size:    51
[libx264 @ 000000000031cea0] consecutive B-frames:  8.0%  0.8%  0.0% 91.2%
[libx264 @ 000000000031cea0] mb I  I16..4: 64.3%  9.7% 26.0%
[libx264 @ 000000000031cea0] mb P  I16..4:  3.6%  1.8%  0.5%  P16..4:  7.1%  3.8%  1.3%  0.0%  0.0%    skip:82.1%
[libx264 @ 000000000031cea0] mb B  I16..4:  0.4%  0.1%  0.0%  B16..8:  1.1%  0.1%  0.0%  direct: 0.4%  skip:98.0%  L0:49.0% L1:50.5% BI: 0.5%
[libx264 @ 000000000031cea0] 8x8 transform intra:24.7% inter:24.4%
[libx264 @ 000000000031cea0] coded y,u,v intra: 10.5% 16.4% 12.4% inter: 0.8% 0.9% 0.7%
[libx264 @ 000000000031cea0] i16 v,h,dc,p: 46% 42%  1% 12%
[libx264 @ 000000000031cea0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 89%  2%  8%  0%  0%  0%  0%  0%  0%
[libx264 @ 000000000031cea0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 26% 50% 20%  0%  1%  1%  0%  1%  1%
[libx264 @ 000000000031cea0] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 000000000031cea0] kb/s:39.32

$ ./ffmpeg -i test.mp4
ffmpeg version N-71838-gd56245f Copyright (c) 2000-2015 the FFmpeg developers
  built with gcc 4.9.2 (Rev5, Built by MSYS2 project)
  configuration: --enable-gpl --enable-nonfree --enable-libdcadec --enable-libfdk-aac --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-openssl --enable-opengl --disable-decoder=dca --target-os=mingw32 --arch=x86_64 --cc='ccache gcc' --cpu=amdfam10 --extra-cflags='-D_WIN32_WINNT=0x0600' --prefix=/mingw64
  libavutil      54. 23.101 / 54. 23.101
  libavcodec     56. 35.101 / 56. 35.101
  libavformat    56. 31.100 / 56. 31.100
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 14.100 /  5. 14.100
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  1.100 /  1.  1.100
  libpostproc    53.  3.100 / 53.  3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf56.31.100
  Duration: 00:00:10.00, start: 0.000000, bitrate: 42 kb/s
    Stream #0:0(und): Video: h264 (High 4:4:4 Predictive) (avc1 / 0x31637661), yuv444p, 320x240 [SAR 1:1 DAR 4:3], 39 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    Metadata:
      handler_name    : VideoHandler
At least one output file must be specified