#!/usr/bin/env bash

# NAME
#   record-screen - script for recording your screen with FFmpeg!
#
# SYNOPSIS
#   ./record-screen [FILE]
#
# NOTES
#   • This script assumes that you are using a recent NVIDIA GPU and that you
#     want to be recording lossless HVEC/H.265 video.
#
#   • Please note that this will likely only work reliably with single-monitor
#     setups...  Otherwise it picks the first 'connected' monitor from xrandr's
#     list...
#
#   • If you are downloading this from a GitHub Gist, be sure to 'chmod +x' this
#     script before attempting to run it!
#
# TODO
#   • Add support for other encoding schemes and acceleration.

resolution="$( xrandr \
                | grep -w connected \
                | awk -F'[ \+]' '{print $3}' 2> /dev/null \
                | head -n1 \
             )"

ffmpeg -video_size $resolution \
       -analyzeduration 2048M \
       -probesize 2048M \
       -framerate 60 \
       -f x11grab \
       -i :0.0 \
       -c:v hevc_nvenc -preset lossless -threads 0 \
   "$1" \
;