screen recording issue

[BrianN92]

Peek: 1.5.1
GTK: 3.24.30
GLib: 2.70.2
Desktop: ubuntu:GNOME
Display server: X
FFmpeg version:

ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 7.3.0 (crosstool-NG 1.23.0.449-a04d0)
configuration: --prefix=/tmp/build/80754af9/ffmpeg_1587154242452/_h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeho --cc=/tmp/build/80754af9/ffmpeg_1587154242452/_build_env/bin/x86_64-conda_cos6-linux-gnu-cc --disable-doc --enable-avresample --enable-gmp --enable-hardcoded-tables --enable-libfreetype --enable-libvpx --enable-pthreads --enable-libopus --enable-postproc --enable-pic --enable-pthreads --enable-shared --enable-static --enable-version3 --enable-zlib --enable-libmp3lame --disable-nonfree --enable-gpl --enable-gnutls --disable-openssl --enable-libopenh264 --enable-libx264
libavutil      56. 31.100 / 56. 31.100
libavcodec     58. 54.100 / 58. 54.100
libavformat    58. 29.100 / 58. 29.100
libavdevice    58.  8.100 / 58.  8.100
libavfilter     7. 57.100 /  7. 57.100
libavresample   4.  0.  0 /  4.  0.  0
libswscale      5.  5.100 /  5.  5.100
libswresample   3.  5.100 /  3.  5.100
libpostproc    55.  5.100 / 55.  5.100

Output format: mp4
gifski enabled: false

Error details:

Command "ffmpeg -f pulse -i default -acodec mp3 -f x11grab -show_region 0 -framerate 30 -video_size 4772x2418 -i :1+322,96 -filter:v scale=iw/1:-1, crop=iw-mod(iw\,2):ih-mod(ih\,2) -codec:v libx264 -preset:v fast -pix_fmt yuv420p -r 30 -y /home/ning/.cache/peek/peek0YNAX2.mp4" failed with status 256 (received signal 0).

Output:
ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg developers  built with gcc 7.3.0 (crosstool-NG 1.23.0.449-a04d0)  configuration: --prefix=/tmp/build/80754af9/ffmpeg_1587154242452/_h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeho --cc=/tmp/build/80754af9/ffmpeg_1587154242452/_build_env/bin/x86_64-conda_cos6-linux-gnu-cc --disable-doc --enable-avresample --enable-gmp --enable-hardcoded-tables --enable-libfreetype --enable-libvpx --enable-pthreads --enable-libopus --enable-postproc --enable-pic --enable-pthreads --enable-shared --enable-static --enable-version3 --enable-zlib --enable-libmp3lame --disable-nonfree --enable-gpl --enable-gnutls --disable-openssl --enable-libopenh264 --enable-libx264  libavutil      56. 31.100 / 56. 31.100  libavcodec     58. 54.100 / 58. 54.100  libavformat    58. 29.100 / 58. 29.100  libavdevice    58.  8.100 / 58.  8.100  libavfilter     7. 57.100 /  7. 57.100  libavresample   4.  0.  0 /  4.  0.  0  libswscale      5.  5.100 /  5.  5.100  libswresample   3.  5.100 /  3.  5.100  libpostproc    55.  5.100 / 55.  5.100Unrecognized option 'show_region'.Error splitting the argument list: Option not found