C:\Userdata\Experiments>ffmpeg -i 1.avi  -c:v libx265 -preset ultrafast -x265-params crf=28 -c:a copy Shout.mp4
ffmpeg version 2.7
built with gcc 4.9.2 (Rev5, Built by MSYS2 project)
configuration: --arch=x86_64 --target-os=mingw32 --enable-gpl --enable-nonfree --enable-version3 --enable-libx265 --enable-libfdk_aac --disable-debug
--extra-ldflags=-static --pkg-config-flags=--static --disable-ffserver --disable-ffprobe --disable-ffplay --disable-doc --disable-htmlpages --disable-
manpages --disable-txtpages --disable-podpages --disable-devices --disable-postproc --disable-network --disable-encoders --enable-encoder=libx265 --en
able-encoder=libfdk_aac --disable-bsfs --disable-muxers --enable-muxer=mp4 --enable-muxer=matroska --disable-logging --disable-protocols --enable-prot
ocol=file --disable-securetransport --disable-symver --disable-safe-bitstream-reader --disable-stripping --disable-network --disable-error-resilience
Input #0, avi, from '1.avi':
  Duration: 01:55:02.90, start: 0.000000, bitrate: 851 kb/s
    Stream #0:0: Video: mpeg4 (XVID / 0x44495658), none, 640x272, 714 kb/s, 23.98 fps, 23.98 tbr, 23.98 tbn, 23.98 tbc
    Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 44100 Hz, stereo, s16p, 128 kb/s
File 'Shout.mp4' already exists. Overwrite ? [y/N] y
No decoder for stream #0:0, filtering impossible
Error opening filters!