/Users/boris/Downloads/ffmpeg -vsync 0 -i /Users/boris/Downloads/events-5.mxg /Users/boris/Downloads/test/events5.mp4
ffmpeg version N-94431-g42a2edcc1d-tessus  https://evermeet.cx/ffmpeg/  Copyright (c) 2000-2019 the FFmpeg developers
  built with Apple LLVM version 10.0.1 (clang-1001.0.46.4)
  configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvmaf --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-version3 --pkg-config-flags=--static --disable-ffplay
  libavutil      56. 32.100 / 56. 32.100
  libavcodec     58. 55.100 / 58. 55.100
  libavformat    58. 30.100 / 58. 30.100
  libavdevice    58.  9.100 / 58.  9.100
  libavfilter     7. 58.100 /  7. 58.100
  libswscale      5.  6.100 /  5.  6.100
  libswresample   3.  6.100 /  3.  6.100
  libpostproc    55.  6.100 / 55.  6.100
Input #0, mxg, from '/Users/boris/Downloads/events-5.mxg':
  Duration: N/A, start: 1564764403.448791, bitrate: N/A
    Stream #0:0: Video: mxpeg, yuvj420p(pc, bt470bg/unknown/unknown), 2560x960, 4 tbr, 1000k tbn, 1000k tbc
    Stream #0:1: Audio: pcm_alaw, 8000 Hz, mono, s16, 64 kb/s
File '/Users/boris/Downloads/test/events5.mp4' already exists. Overwrite ? [y/N] Y
Stream mapping:
  Stream #0:0 -> #0:0 (mxpeg (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (pcm_alaw (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 0x7fde68833c00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
[libx264 @ 0x7fde68833c00] profile Progressive High, level 5.0, 4:2:0, 8-bit
[libx264 @ 0x7fde68833c00] 264 - core 157 r2969 d4099dd - H.264/MPEG-4 AVC codec - Copyleft 2003-2019 - 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=4 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
[aac @ 0x7fde68835400] Too many bits 8832.000000 > 6144 per frame requested, clamping to max
Output #0, mp4, to '/Users/boris/Downloads/test/events5.mp4':
  Metadata:
    encoder         : Lavf58.30.100
    Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuvj420p(pc, progressive), 2560x960, q=-1--1, 4 fps, 16384 tbn, 4 tbc
    Metadata:
      encoder         : Lavc58.55.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 8000 Hz, mono, fltp, 48 kb/s
    Metadata:
      encoder         : Lavc58.55.100 aac
frame=   14 fps=0.0 q=0.0 size=       0kB time=00:24:36.16 bitrate=   0.0kbits/sframe=   29 fps= 28 q=0.0 size=       0kB time=00:48:08.60 bitrate=   0.0kbits/sframe=   43 fps= 28 q=0.0 size=     256kB time=01:55:04.01 bitrate=   0.3kbits/sframe=   46 fps= 18 q=0.0 size=     256kB time=01:55:06.44 bitrate=   0.3kbits/sframe=   51 fps= 15 q=17.0 size=     768kB time=01:55:10.79 bitrate=   0.9kbits/frame=   52 fps= 13 q=17.0 size=    1280kB time=01:55:12.20 bitrate=   1.5kbits/frame=   56 fps= 12 q=17.0 size=    2816kB time=02:02:56.08 bitrate=   3.1kbits/frame=   60 fps= 10 q=17.0 size=    4352kB time=02:03:00.94 bitrate=   4.8kbits/frame=   63 fps=9.8 q=17.0 size=    5376kB time=02:03:04.01 bitrate=   6.0kbits/frame=   65 fps=4.5 q=-1.0 Lsize=   20690kB time=02:03:06.19 bitrate=  22.9kbits/s speed= 506x
video:20176kB audio:508kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.030982%
[libx264 @ 0x7fde68833c00] frame I:2     Avg QP:12.36  size:858381
[libx264 @ 0x7fde68833c00] frame P:19    Avg QP:14.88  size:503728
[libx264 @ 0x7fde68833c00] frame B:44    Avg QP:18.36  size:212992
[libx264 @ 0x7fde68833c00] consecutive B-frames:  7.7%  3.1%  9.2% 80.0%
[libx264 @ 0x7fde68833c00] mb I  I16..4:  0.1% 95.2%  4.7%
[libx264 @ 0x7fde68833c00] mb P  I16..4:  0.9% 20.0%  1.5%  P16..4: 35.4% 20.2% 17.7%  0.0%  0.0%    skip: 4.3%
[libx264 @ 0x7fde68833c00] mb B  I16..4:  0.2%  3.2%  0.6%  B16..8: 13.2%  9.3%  7.5%  direct:33.8%  skip:32.2%  L0:44.6% L1:30.9% BI:24.5%
[libx264 @ 0x7fde68833c00] 8x8 transform intra:88.9% inter:98.0%
[libx264 @ 0x7fde68833c00] coded y,uvDC,uvAC intra: 93.5% 48.2% 44.7% inter: 69.1% 34.7% 23.6%
[libx264 @ 0x7fde68833c00] i16 v,h,dc,p: 85% 11%  3%  0%
[libx264 @ 0x7fde68833c00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 10% 21% 18%  4% 10%  7% 15%  6%  9%
[libx264 @ 0x7fde68833c00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 19% 23% 11%  5%  9%  7% 12%  5%  8%
[libx264 @ 0x7fde68833c00] i8c dc,h,v,p: 76% 12%  9%  3%
[libx264 @ 0x7fde68833c00] Weighted P-Frames: Y:42.1% UV:31.6%
[libx264 @ 0x7fde68833c00] ref P L0: 51.1% 18.0% 14.6% 14.3%  1.9%
[libx264 @ 0x7fde68833c00] ref B L0: 73.4% 20.5%  6.2%
[libx264 @ 0x7fde68833c00] ref B L1: 93.9%  6.1%
[libx264 @ 0x7fde68833c00] kb/s:22.38
[aac @ 0x7fde68835400] Qavg: 62083.520