How can I create custom CameraPreview with certain size and save taken photo with the same size? (Flutter)

capturing video using camera after uploading in server that time some video failed for this error
ERROR/ForkPoolWorker-4] ffmpeg failed to
execute command: b”ffmpeg version 5.1.4-0+deb12u1 Copyright (c)
2000-2023 the FFmpeg developersn built with gcc 12 (Debian
12.2.0-14)n configuration: –prefix=/usr –extra-version=0+deb12u1 —
toolchain=hardened –libdir=/usr/lib/x86_64-linux-gnu –incdir=/usr/
include/x86_64-linux-gnu –arch=amd64 –enable-gpl –disable�stripping –enable-gnutls –enable-ladspa –enable-libaom –enable�libass –enable-libbluray –enable-libbs2b –enable-libcaca –enable�libcdio –enable-libcodec2 –enable-libdav1d –enable-libflite –enable�libfontconfig –enable-libfreetype –enable-libfribidi –enable-libglslang
–enable-libgme –enable-libgsm –enable-libjack –enable-libmp3lame….