ffmpeg version 3.2.5-1~bpo8+1 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 4.9.2 (Debian 4.9.2-10)
  configuration: --prefix=/usr --extra-version='1~bpo8+1' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --disable-libebur128 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
  libavutil      55. 34.101 / 55. 34.101
  libavcodec     57. 64.101 / 57. 64.101
  libavformat    57. 56.101 / 57. 56.101
  libavdevice    57.  1.100 / 57.  1.100
  libavfilter     6. 65.100 /  6. 65.100
  libavresample   3.  1.  0 /  3.  1.  0
  libswscale      4.  2.100 /  4.  2.100
  libswresample   2.  3.100 /  2.  3.100
  libpostproc    54.  1.100 / 54.  1.100
Input #0, matroska,webm, from 'pipe:':
  Metadata:
    encoder         : Chrome
  Duration: N/A, start: 0.000000, bitrate: N/A
    Stream #0:0(eng): Audio: opus, 48000 Hz, mono, fltp (default)
    Stream #0:1(eng): Video: vp8, yuv420p, 640x480, SAR 1:1 DAR 4:3, 1k tbr, 1k tbn, 1k tbc (default)
    Metadata:
      alpha_mode      : 1
[libvpx-vp9 @ 0x556842c2b420] v1.3.0
Output #0, webm, to 'new.webm':
  Metadata:
    encoder         : Lavf57.56.101
    Stream #0:0(eng): Video: vp9 (libvpx-vp9), yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=-1--1, 200 kb/s, 24 fps, 1k tbn, 24 tbc (default)
    Metadata:
      alpha_mode      : 1
      encoder         : Lavc57.64.101 libvpx-vp9
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream mapping:
  Stream #0:1 -> #0:0 (vp8 (native) -> vp9 (libvpx-vp9))
frame=   36 fps=0.0 q=0.0 size=       0kB time=00:00:00.45 bitrate=   7.6kbits/sframe=   38 fps= 12 q=0.0 size=       0kB time=00:00:00.54 bitrate=   6.5kbits/sframe=   47 fps= 13 q=0.0 size=       0kB time=00:00:00.91 bitrate=   3.8kbits/sframe=   54 fps= 13 q=0.0 size=       0kB time=00:00:01.20 bitrate=   2.9kbits/sframe=   58 fps= 12 q=0.0 size=       0kB time=00:00:01.37 bitrate=   2.5kbits/sframe=   59 fps=9.4 q=0.0 size=       0kB time=00:00:01.41 bitrate=   2.5kbits/sframe=   63 fps=9.2 q=0.0 size=       0kB time=00:00:01.58 bitrate=   2.2kbits/sframe=   66 fps=8.9 q=0.0 size=       0kB time=00:00:01.70 bitrate=   2.1kbits/sframe=   69 fps=8.6 q=0.0 size=       0kB time=00:00:01.83 bitrate=   1.9kbits/sframe=   74 fps=8.6 q=0.0 size=       0kB time=00:00:02.04 bitrate=   1.7kbits/sframe=   78 fps=8.4 q=0.0 size=       0kB time=00:00:02.20 bitrate=   1.6kbits/sframe=   81 fps=8.2 q=0.0 size=       0kB time=00:00:02.33 bitrate=   1.5kbits/sframe=   84 fps=8.0 q=0.0 size=       0kB time=00:00:02.45 bitrate=   1.4kbits/sframe=   87 fps=7.9 q=0.0 size=       0kB time=00:00:02.58 bitrate=   1.4kbits/sframe=   91 fps=7.9 q=0.0 size=       0kB time=00:00:02.75 bitrate=   1.3kbits/sframe=   95 fps=7.8 q=0.0 size=       0kB time=00:00:02.91 bitrate=   1.2kbits/sframe=   98 fps=7.8 q=0.0 size=       0kB time=00:00:03.04 bitrate=   1.2kbits/sframe=  101 fps=7.6 q=0.0 size=       0kB time=00:00:03.16 bitrate=   1.1kbits/sframe=  104 fps=7.5 q=0.0 size=       0kB time=00:00:03.29 bitrate=   1.1kbits/sframe=  107 fps=7.3 q=0.0 size=       0kB time=00:00:03.41 bitrate=   1.0kbits/sframe=  110 fps=7.2 q=0.0 size=       0kB time=00:00:03.54 bitrate=   1.0kbits/sframe=  114 fps=7.2 q=0.0 size=       0kB time=00:00:03.70 bitrate=   0.9kbits/sframe=  118 fps=7.2 q=0.0 size=       0kB time=00:00:03.87 bitrate=   0.9kbits/sframe=  121 fps=7.1 q=0.0 size=       0kB time=00:00:04.00 bitrate=   0.9kbits/sframe=  124 fps=7.0 q=0.0 size=       0kB time=00:00:04.12 bitrate=   0.8kbits/sframe=  127 fps=6.9 q=0.0 size=       0kB time=00:00:04.25 bitrate=   0.8kbits/sframe=  130 fps=6.8 q=0.0 size=       0kB time=00:00:04.37 bitrate=   0.8kbits/sframe=  134 fps=6.8 q=0.0 size=       0kB time=00:00:04.54 bitrate=   0.8kbits/sframe=  138 fps=6.8 q=0.0 size=       0kB time=00:00:04.70 bitrate=   0.7kbits/sframe=  141 fps=6.7 q=0.0 size=       0kB time=00:00:04.83 bitrate=   0.7kbits/sframe=  144 fps=6.7 q=0.0 size=       0kB time=00:00:04.95 bitrate=   0.7kbits/sframe=  147 fps=6.6 q=0.0 size=     107kB time=00:00:05.08 bitrate= 171.8kbits/sframe=  150 fps=6.5 q=0.0 size=     107kB time=00:00:05.20 bitrate= 167.6kbits/sframe=  153 fps=6.5 q=0.0 size=     107kB time=00:00:05.33 bitrate= 163.7kbits/sframe=  157 fps=6.5 q=0.0 size=     107kB time=00:00:05.50 bitrate= 158.7kbits/sframe=  161 fps=6.5 q=0.0 size=     107kB time=00:00:05.66 bitrate= 154.1kbits/sframe=  164 fps=6.4 q=0.0 size=     107kB time=00:00:05.79 bitrate= 150.7kbits/sframe=  166 fps=6.4 q=0.0 size=     107kB time=00:00:05.87 bitrate= 148.6kbits/sframe=  169 fps=6.3 q=0.0 size=     107kB time=00:00:06.00 bitrate= 145.5kbits/sframe=  172 fps=6.3 q=0.0 size=     107kB time=00:00:06.12 bitrate= 142.5kbits/sframe=  175 fps=6.3 q=0.0 size=     107kB time=00:00:06.25 bitrate= 139.7kbits/sframe=  180 fps=6.3 q=0.0 size=     107kB time=00:00:06.45 bitrate= 135.2kbits/sframe=  183 fps=6.3 q=0.0 size=     107kB time=00:00:06.58 bitrate= 132.6kbits/sframe=  186 fps=6.2 q=0.0 size=     107kB time=00:00:06.70 bitrate= 130.2kbits/sframe=  189 fps=6.2 q=0.0 size=     107kB time=00:00:06.83 bitrate= 127.8kbits/sframe=  192 fps=6.2 q=0.0 size=     107kB time=00:00:06.95 bitrate= 125.5kbits/sframe=  195 fps=6.2 q=0.0 size=     107kB time=00:00:07.08 bitrate= 123.3kbits/sframe=  198 fps=6.1 q=0.0 size=     107kB time=00:00:07.20 bitrate= 121.1kbits/sframe=  203 fps=6.2 q=0.0 size=     107kB time=00:00:07.41 bitrate= 117.7kbits/sframe=  206 fps=6.2 q=0.0 size=     107kB time=00:00:07.54 bitrate= 115.8kbits/sframe=  209 fps=6.1 q=0.0 size=     107kB time=00:00:07.66 bitrate= 113.9kbits/sframe=  212 fps=6.1 q=0.0 size=     107kB time=00:00:07.79 bitrate= 112.1kbits/sframe=  215 fps=6.0 q=0.0 size=     107kB time=00:00:07.91 bitrate= 110.3kbits/sframe=  218 fps=6.0 q=0.0 size=     107kB time=00:00:08.04 bitrate= 108.6kbits/sframe=  223 fps=6.0 q=0.0 size=     107kB time=00:00:08.25 bitrate= 105.8kbits/sframe=  226 fps=6.0 q=0.0 size=     107kB time=00:00:08.37 bitrate= 104.3kbits/sframe=  229 fps=6.0 q=0.0 size=     107kB time=00:00:08.50 bitrate= 102.7kbits/sframe=  232 fps=6.0 q=0.0 size=     107kB time=00:00:08.62 bitrate= 101.2kbits/sframe=  235 fps=6.0 q=0.0 size=     107kB time=00:00:08.75 bitrate=  99.8kbits/sframe=  238 fps=5.9 q=0.0 size=     107kB time=00:00:08.87 bitrate=  98.4kbits/sframe=  240 fps=5.9 q=0.0 size=     107kB time=00:00:08.95 bitrate=  97.5kbits/sframe=  245 fps=5.9 q=0.0 size=     107kB time=00:00:09.16 bitrate=  95.2kbits/sframe=  248 fps=5.9 q=0.0 size=     107kB time=00:00:09.29 bitrate=  94.0kbits/sframe=  251 fps=5.9 q=0.0 size=     107kB time=00:00:09.41 bitrate=  92.7kbits/sframe=  254 fps=5.9 q=0.0 size=     107kB time=00:00:09.54 bitrate=  91.5kbits/sframe=  257 fps=5.8 q=0.0 size=     107kB time=00:00:09.66 bitrate=  90.3kbits/sframe=  260 fps=5.8 q=0.0 size=     107kB time=00:00:09.79 bitrate=  89.2kbits/sframe=  264 fps=5.8 q=0.0 size=     107kB time=00:00:09.95 bitrate=  87.7kbits/sframe=  267 fps=5.8 q=0.0 size=     237kB time=00:00:10.08 bitrate= 192.8kbits/sframe=  270 fps=5.8 q=0.0 size=     237kB time=00:00:10.20 bitrate= 190.5kbits/sframe=  273 fps=5.8 q=0.0 size=     237kB time=00:00:10.33 bitrate= 188.2kbits/sframe=  275 fps=5.8 q=0.0 size=     237kB time=00:00:10.41 bitrate= 186.7kbits/sframe=  278 fps=5.8 q=0.0 size=     237kB time=00:00:10.54 bitrate= 184.4kbits/sframe=  281 fps=5.8 q=0.0 size=     237kB time=00:00:10.66 bitrate= 182.3kbits/sframe=  283 fps=5.7 q=0.0 size=     237kB time=00:00:10.75 bitrate= 180.9kbits/sframe=  288 fps=5.8 q=0.0 size=     237kB time=00:00:10.95 bitrate= 177.4kbits/sframe=  291 fps=5.8 q=0.0 size=     237kB time=00:00:11.08 bitrate= 175.4kbits/sframe=  294 fps=5.8 q=0.0 size=     237kB time=00:00:11.20 bitrate= 173.5kbits/sframe=  297 fps=5.8 q=0.0 size=     237kB time=00:00:11.33 bitrate= 171.6kbits/sframe=  300 fps=5.8 q=0.0 size=     237kB time=00:00:11.45 bitrate= 169.7kbits/sframe=  303 fps=5.7 q=0.0 size=     237kB time=00:00:11.58 bitrate= 167.9kbits/sframe=  308 fps=5.8 q=0.0 size=     237kB time=00:00:11.79 bitrate= 164.9kbits/sframe=  311 fps=5.8 q=0.0 size=     237kB time=00:00:11.91 bitrate= 163.2kbits/sframe=  314 fps=5.8 q=0.0 size=     237kB time=00:00:12.04 bitrate= 161.5kbits/sframe=  317 fps=5.8 q=0.0 size=     237kB time=00:00:12.16 bitrate= 159.8kbits/sframe=  320 fps=5.7 q=0.0 size=     237kB time=00:00:12.29 bitrate= 158.2kbits/sframe=  323 fps=5.7 q=0.0 size=     237kB time=00:00:12.41 bitrate= 156.6kbits/sframe=  326 fps=5.7 q=0.0 size=     237kB time=00:00:12.54 bitrate= 155.0kbits/sframe=  331 fps=5.8 q=0.0 size=     237kB time=00:00:12.75 bitrate= 152.5kbits/sframe=  334 fps=5.7 q=0.0 size=     237kB time=00:00:12.87 bitrate= 151.0kbits/sframe=  337 fps=5.7 q=0.0 size=     237kB time=00:00:13.00 bitrate= 149.6kbits/sframe=  340 fps=5.7 q=0.0 size=     237kB time=00:00:13.12 bitrate= 148.1kbits/sframe=  343 fps=5.7 q=0.0 size=     237kB time=00:00:13.25 bitrate= 146.8kbits/sframe=  346 fps=5.7 q=0.0 size=     237kB time=00:00:13.37 bitrate= 145.4kbits/sframe=  351 fps=5.7 q=0.0 size=     237kB time=00:00:13.58 bitrate= 143.2kbits/sframe=  354 fps=5.7 q=0.0 size=     237kB time=00:00:13.70 bitrate= 141.8kbits/sframe=  357 fps=5.7 q=0.0 size=     237kB time=00:00:13.83 bitrate= 140.6kbits/sframe=  359 fps=5.7 q=0.0 size=     237kB time=00:00:13.91 bitrate= 139.7kbits/sframe=  362 fps=5.7 q=0.0 size=     237kB time=00:00:14.04 bitrate= 138.5kbits/sframe=  365 fps=5.7 q=0.0 size=     237kB time=00:00:14.16 bitrate= 137.3kbits/sframe=  368 fps=5.7 q=0.0 size=     237kB time=00:00:14.29 bitrate= 136.1kbits/sframe=  373 fps=5.7 q=0.0 size=     237kB time=00:00:14.50 bitrate= 134.1kbits/sframe=  376 fps=5.7 q=0.0 size=     237kB time=00:00:14.62 bitrate= 133.0kbits/sframe=  379 fps=5.7 q=0.0 size=     237kB time=00:00:14.75 bitrate= 131.8kbits/sframe=  382 fps=5.7 q=0.0 size=     237kB time=00:00:14.87 bitrate= 130.7kbits/sframe=  385 fps=5.7 q=0.0 size=     237kB time=00:00:15.00 bitrate= 129.6kbits/sframe=  388 fps=5.7 q=0.0 size=     372kB time=00:00:15.12 bitrate= 201.3kbits/sframe=  392 fps=5.7 q=0.0 size=     372kB time=00:00:15.29 bitrate= 199.1kbits/sframe=  396 fps=5.7 q=0.0 size=     372kB time=00:00:15.45 bitrate= 197.0kbits/sframe=  399 fps=5.7 q=0.0 size=     372kB time=00:00:15.58 bitrate= 195.4kbits/sframe=  402 fps=5.7 q=0.0 size=     372kB time=00:00:15.70 bitrate= 193.9kbits/sframe=  406 fps=5.7 q=0.0 size=     372kB time=00:00:15.87 bitrate= 191.8kbits/sframe=  409 fps=5.7 q=0.0 size=     372kB time=00:00:16.00 bitrate= 190.3kbits/sframe=  413 fps=5.7 q=0.0 size=     372kB time=00:00:16.16 bitrate= 188.3kbits/sframe=  416 fps=5.7 q=0.0 size=     372kB time=00:00:16.29 bitrate= 186.9kbits/sframe=  419 fps=5.7 q=0.0 size=     372kB time=00:00:16.41 bitrate= 185.5kbits/sframe=  422 fps=5.7 q=0.0 size=     372kB time=00:00:16.54 bitrate= 184.1kbits/sframe=  425 fps=5.6 q=0.0 size=     372kB time=00:00:16.66 bitrate= 182.7kbits/sframe=  428 fps=5.6 q=0.0 size=     372kB time=00:00:16.79 bitrate= 181.3kbits/sframe=  431 fps=5.6 q=0.0 size=     372kB time=00:00:16.91 bitrate= 180.0kbits/sframe=  434 fps=5.6 q=0.0 size=     372kB time=00:00:17.04 bitrate= 178.7kbits/sframe=  438 fps=5.6 q=0.0 size=     372kB time=00:00:17.20 bitrate= 177.0kbits/sframe=  442 fps=5.6 q=0.0 size=     372kB time=00:00:17.37 bitrate= 175.3kbits/sframe=  445 fps=5.6 q=0.0 size=     372kB time=00:00:17.50 bitrate= 174.0kbits/sframe=  448 fps=5.6 q=0.0 size=     372kB time=00:00:17.62 bitrate= 172.8kbits/sframe=  450 fps=5.6 q=0.0 size=     372kB time=00:00:17.70 bitrate= 172.0kbits/sframe=  453 fps=5.6 q=0.0 size=     372kB time=00:00:17.83 bitrate= 170.8kbits/sframe=  458 fps=5.6 q=0.0 size=     372kB time=00:00:18.04 bitrate= 168.8kbits/sframe=  461 fps=5.6 q=0.0 size=     372kB time=00:00:18.16 bitrate= 167.6kbits/sframe=  464 fps=5.6 q=0.0 size=     372kB time=00:00:18.29 bitrate= 166.5kbits/sframe=  467 fps=5.6 q=0.0 size=     372kB time=00:00:18.41 bitrate= 165.3kbits/sframe=  470 fps=5.6 q=0.0 size=     372kB time=00:00:18.54 bitrate= 164.2kbits/sframe=  473 fps=5.6 q=0.0 size=     372kB time=00:00:18.66 bitrate= 163.1kbits/sframe=  476 fps=5.6 q=0.0 size=     372kB time=00:00:18.79 bitrate= 162.0kbits/sframe=  480 fps=5.6 q=0.0 size=     372kB time=00:00:18.95 bitrate= 160.6kbits/sframe=  484 fps=5.6 q=0.0 size=     372kB time=00:00:19.12 bitrate= 159.2kbits/sframe=  487 fps=5.6 q=0.0 size=     372kB time=00:00:19.25 bitrate= 158.2kbits/sframe=  489 fps=5.6 q=0.0 size=     372kB time=00:00:19.33 bitrate= 157.5kbits/sframe=  492 fps=5.6 q=0.0 size=     372kB time=00:00:19.45 bitrate= 156.5kbits/sframe=  495 fps=5.6 q=0.0 size=     372kB time=00:00:19.58 bitrate= 155.5kbits/sframe=  499 fps=5.6 q=0.0 size=     372kB time=00:00:19.75 bitrate= 154.2kbits/sframe=  502 fps=5.6 q=0.0 size=     372kB time=00:00:19.87 bitrate= 153.2kbits/sframe=  505 fps=5.6 q=0.0 size=     372kB time=00:00:20.00 bitrate= 152.3kbits/sframe=  508 fps=5.6 q=0.0 size=     372kB time=00:00:20.12 bitrate= 151.3kbits/sframe=  511 fps=5.6 q=0.0 size=     507kB time=00:00:20.25 bitrate= 205.2kbits/sframe=  514 fps=5.6 q=0.0 size=     507kB time=00:00:20.37 bitrate= 203.9kbits/sframe=  517 fps=5.6 q=0.0 size=     507kB time=00:00:20.50 bitrate= 202.7kbits/sframe=  521 fps=5.6 q=0.0 size=     507kB time=00:00:20.66 bitrate= 201.1kbits/sframe=  525 fps=5.6 q=0.0 size=     507kB time=00:00:20.83 bitrate= 199.5kbits/sframe=  528 fps=5.6 q=0.0 size=     507kB time=00:00:20.95 bitrate= 198.3kbits/sframe=  531 fps=5.6 q=0.0 size=     507kB time=00:00:21.08 bitrate= 197.1kbits/sframe=  534 fps=5.6 q=0.0 size=     507kB time=00:00:21.20 bitrate= 195.9kbits/sframe=  536 fps=5.6 q=0.0 size=     507kB time=00:00:21.29 bitrate= 195.2kbits/sframe=  539 fps=5.5 q=0.0 size=     507kB time=00:00:21.41 bitrate= 194.0kbits/sframe=  544 fps=5.6 q=0.0 size=     507kB time=00:00:21.62 bitrate= 192.2kbits/sframe=  547 fps=5.6 q=0.0 size=     507kB time=00:00:21.75 bitrate= 191.1kbits/sframe=  549 fps=5.5 q=0.0 size=     507kB time=00:00:21.83 bitrate= 190.3kbits/sframe=  551 fps=5.5 q=0.0 size=     507kB time=00:00:21.91 bitrate= 189.6kbits/sframe=  554 fps=5.5 q=0.0 size=     507kB time=00:00:22.04 bitrate= 188.5kbits/sframe=  557 fps=5.5 q=0.0 size=     507kB time=00:00:22.16 bitrate= 187.5kbits/sframe=  560 fps=5.5 q=0.0 size=     507kB time=00:00:22.29 bitrate= 186.4kbits/sframe=  564 fps=5.5 q=0.0 size=     507kB time=00:00:22.45 bitrate= 185.0kbits/sframe=  567 fps=5.5 q=0.0 size=     507kB time=00:00:22.58 bitrate= 184.0kbits/sframe=  570 fps=5.5 q=0.0 size=     507kB time=00:00:22.70 bitrate= 183.0kbits/sframe=  573 fps=5.5 q=0.0 size=     507kB time=00:00:22.83 bitrate= 182.0kbits/sframe=  575 fps=5.5 q=0.0 size=     507kB time=00:00:22.91 bitrate= 181.3kbits/sframe=  578 fps=5.5 q=0.0 size=     507kB time=00:00:23.04 bitrate= 180.3kbits/sframe=  580 fps=5.5 q=0.0 size=     507kB time=