ffmpeg won't recognize x265 options [closed]

Question

I am trying to use ffmpeg's built-in x265 library to process .VOB files through h.265codec.

What I understood from the ffmpeg documentation was that:

-c:v libx265 tells ffmpeg to use the h.265 codec for video streams

-x265-params passes options to x265 encoder instead of ffmpeg

But whenever try to run the command, ffmpeg doesn't seem to recognize/pass the options to x265.

It gives the error

Unrecognized option '-y4m'.
Error splitting the argument list: Option not found

Why is this?

Here's the command (edited spacing):

C:\ffmpeg (20170123-e371f03-win64-static)\bin> 
   ffmpeg -i concat:'input1.VOB'\'input.VOB'
   -map 0:v -map 0:a -r 24000/1001 -f yuv4mpegpipe 
   -c:v libx265 -x265-params 
   --y4m --fps 24000/1001 -p veryslow --open-gop --bframes 16 
   --b-p yramid --bitrate 2500 --rect --amp --aq-mode 3 --no-sao --qcomp 0.75 
   --no-strong -intra-smoothing --psy-rd 1.6 --psy-rdoq 5.0 --rdoq-level 1 
   --tu-inter-depth 4 --tu-intra-depth 4 --ctu 32 --max-tu-size 16 --pass 1 
   --slow-firstpass --stats v. stats --sar 1 --range full 'E:\output.hevc'




ffmpeg version N-83195-ge371f03 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 5.4.0 (GCC)
  configuration: --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --e
nable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --
enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv
--enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-li
bfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug -
-enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enabl
e-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-li
bsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolam
e --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx
 --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable
-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --ena
ble-zlib
  libavutil      55. 44.100 / 55. 44.100
  libavcodec     57. 75.100 / 57. 75.100
  libavformat    57. 63.100 / 57. 63.100
  libavdevice    57.  2.100 / 57.  2.100
  libavfilter     6. 69.100 /  6. 69.100
  libswscale      4.  3.101 /  4.  3.101
  libswresample   2.  4.100 /  2.  4.100
  libpostproc    54.  2.100 / 54.  2.100
Unrecognized option '-y4m'.
Error splitting the argument list: Option not found

Answer 1

That's not the correct syntax. Use

-x265-params "y4m=1:fps=24000/1001:p=veryslow:...."