Two pass encode ffmpeg

encode.sh

#!/usr/bin/env bash

set -e

#BR=2100k #kbit/s
#SCALE="1024:768"
#OUTPUT="medium_quality.mp4"

BR=800k #kbit/s
SCALE="800:600"
OUTPUT="low_quality.mp4"

INPUT="PXL_20260116_142011708.mp4"

ffmpeg -y -i $INPUT -c:v libx264 -b:v $BR -vf scale=$SCALE -pix_fmt yuv420p -map_metadata -1 -pass 1 -an -f mp4 /dev/null
ffmpeg -i $INPUT -c:v libx264 -b:v $BR -vf scale=$SCALE -pix_fmt yuv420p -map_metadata -1 -pass 2 -an $OUTPUT