[apersin@webdev image_test]$ ffmpeg -framerate 1 -start_number 1 -i %01d.tif -c:v libx264 -pix_fmt yuv420p out.mp4
ffmpeg version N-82533-gae514b1 Copyright (c) 2000-2016 the FFmpeg developers
  built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-17)
  configuration: --prefix=/home/apersin/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/apersin/ffmpeg_build/include --extra-ldflags=-L/home/apersin/ffmpeg_build/lib --bindir=/home/apersin/bin --enable-gpl --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree
  libavutil      55. 40.100 / 55. 40.100
  libavcodec     57. 66.105 / 57. 66.105
  libavformat    57. 57.100 / 57. 57.100
  libavdevice    57.  2.100 / 57.  2.100
  libavfilter     6. 67.100 /  6. 67.100
  libswscale      4.  3.101 /  4.  3.101
  libswresample   2.  4.100 /  2.  4.100
  libpostproc    54.  2.100 / 54.  2.100
Input #0, image2, from '%01d.tif':
  Duration: 00:00:06.00, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: tiff, rgb24, 5000x6710 [SAR 1:1 DAR 500:671], 1 tbr, 1 tbn, 1 tbc
File 'out.mp4' already exists. Overwrite ? [y/N] y
[libx264 @ 0x2881840] using SAR=1/1
[libx264 @ 0x2881840] frame MB size (313x420) > level limit (36864)
[libx264 @ 0x2881840] DPB size (4 frames, 525840 mbs) > level limit (1 frames, 184320 mbs)
[libx264 @ 0x2881840] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
[libx264 @ 0x2881840] profile High, level 5.2
[libx264 @ 0x2881840] 264 - core 148 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - 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=24 lookahead_threads=4 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=1 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
Output #0, mp4, to 'out.mp4':
  Metadata:
    encoder         : Lavf57.57.100
    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 5000x6710 [SAR 1:1 DAR 500:671], q=-1--1, 1 fps, 16384 tbn, 1 tbc
    Metadata:
      encoder         : Lavc57.66.105 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream mapping:
  Stream #0:0 -> #0:0 (tiff (native) -> h264 (libx264))
Press [q] to stop, [?] for help
Input stream #0:0 frame changed from size:5000x6710 fmt:rgb24 to size:1344x1200 fmt:rgb24
Input stream #0:0 frame changed from size:1344x1200 fmt:rgb24 to size:10000x2848 fmt:rgb24
Input stream #0:0 frame changed from size:10000x2848 fmt:rgb24 to size:3300x2550 fmt:rgb24
Input stream #0:0 frame changed from size:3300x2550 fmt:rgb24 to size:2880x1800 fmt:rgb24
Input stream #0:0 frame changed from size:2880x1800 fmt:rgb24 to size:10253x2500 fmt:rgb24
frame=    6 fps=0.4 q=-1.0 Lsize=   27539kB time=00:00:03.00 bitrate=75199.1kbits/s speed=0.214x
video:27538kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.003220%
[libx264 @ 0x2881840] frame I:1     Avg QP:14.65  size:5763004
[libx264 @ 0x2881840] frame P:5     Avg QP:15.99  size:4487133
[libx264 @ 0x2881840] mb I  I16..4:  1.1% 79.2% 19.7%
[libx264 @ 0x2881840] mb P  I16..4:  5.6% 76.7% 17.6%  P16..4:  0.0%  0.0%  0.0%  0.0%  0.0%    skip: 0.0%
[libx264 @ 0x2881840] 8x8 transform intra:77.2% inter:61.4%
[libx264 @ 0x2881840] coded y,uvDC,uvAC intra: 85.6% 70.6% 63.8% inter: 17.6% 13.3% 7.3%
[libx264 @ 0x2881840] i16 v,h,dc,p: 85%  4%  5%  6%
[libx264 @ 0x2881840] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27% 10% 16%  5%  7% 12%  5% 11%  7%
[libx264 @ 0x2881840] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27% 10%  7%  7%  9% 15%  6% 12%  7%
[libx264 @ 0x2881840] i8c dc,h,v,p: 61% 13% 19%  7%
[libx264 @ 0x2881840] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x2881840] ref P L0: 52.5%  1.4%  2.8% 43.3%
[libx264 @ 0x2881840] kb/s:37598.23