ffmpeg 2pass encoding

encode.bat

@ECHO OFF

REM 1280x 720 30fps =  5000k
REM           60fps =  7500k
REM 1920x1080 30fps =  8000k
REM 1920x0180 60fps = 12000k


:BEGIN
IF [%1]==[] GOTO :eof

::1PASS
REM ffmpeg -i "%~1" -c:a libopus -b:a 256k -filter:v yadif,scale=1280x720 -c:v libx264 -preset:v slow -b:v 4000k enc.mkv

::2PASS
title (PASS 1) %~nx1
ffmpeg -y -i "%~1" -an                    -filter:v yadif -c:v libx264 -preset:v slow -b:v 8000k -pass 1 -passlogfile "log\%~sn1" -f matroska NUL
title (PASS 2) %~nx1
ffmpeg    -i "%~1" -c:a libopus -b:a 256k -filter:v yadif -c:v libx264 -preset:v slow -b:v 8000k -pass 2 -passlogfile "log\%~sn1" -f matroska "%~n1.mkv"

SHIFT
GOTO BEGIN