chcp 65001
echo off
cls

set INPUT=C:\any_video.mp4

rem • имя конечного файла myfile без ".gif", можно с указанием пути C:\mydir\myfile
set OUTPUTNAME=my_gif_file

rem • начало в (format 00:00:00.000)
set START=00:08:48.000

rem • длительность (format 00:00:00.000)
set LENGTH=00:00:03.100

rem • кол-во цветов: 1-256
set COLORS=64

rem • алгоритмы сглаживания границ шумом
rem atkinson
rem bayer:bayer_scale=0
rem bayer:bayer_scale=1
rem bayer:bayer_scale=2
rem bayer:bayer_scale=3
rem bayer:bayer_scale=4
rem bayer:bayer_scale=5
rem burkes
rem floyd_steinberg
rem sierra2
rem sierra2_4a
rem none
set DITHER=bayer:bayer_scale=2

rem • if enabled - only the changing rectangle will be reprocessed
set DIFF=:diff_mode=rectangle

set FILTER= -filter_complex "
	rem • fps
	set FILTER=%FILTER%fps=10,

	rem • crop inputs: iw, ih, ow, oh
	rem set FILTER=%FILTER%crop=w=640:h=480:x=1146:y=24,

	rem • scale filters: "lanczos" for gradients, "sinc" for complex images with small details
	rem set FILTER=%FILTER%scale=1280:-1:flags=lanczos+accurate_rnd,

	set FILTER=%FILTER%split[a][b];
	set FILTER=%FILTER%[a]palettegen=%COLORS%:reserve_transparent=0[p];
	set FILTER=%FILTER%[b][p]paletteuse=%DITHER%%DIFF%
set FILTER=%FILTER%"

rem • число повторений: -1 = 1 раз; 0 = бесконечно; 1 = 2 раза; 2 = 3 раза...
set LOOP=0

rem ====== КОНЕЦ НАСТРОЕК ======

if exist "%INPUT%" (
	CALL :get_source "%INPUT%"
) else (
	echo Error: input file not found.
	pause
	exit 0
)
:get_source
	set ATTR=%~a1
	set DIRATTR=%ATTR:~0,1%
	if /I "%DIRATTR%" NEQ "d" set SOURCEDIR=%~dp1
	if /I "%DIRATTR%" NEQ "d" set SOURCEFILE=%~n1
	set INPUT= -i "%INPUT%"
:get_source_end

if not "%OUTPUTNAME%"=="" (
	CALL :get_target %OUTPUTNAME%
) else (
	set OUTPUT= "%SOURCEDIR%%~n1 - ffmpeg.gif"
	GOTO:get_target_end
)
:get_target
	set TARGETDIR=%~dp1
	if /I "%TARGETDIR%"=="%~dp0" (
		set OUTPUT= "%SOURCEDIR%%~n1.gif"
	) else (
		set OUTPUT= "%TARGETDIR%%~n1.gif"
	)
:get_target_end

if not "%START%"=="" set START= -ss %START%
if not "%LENGTH%"=="" set LENGTH= -t %LENGTH%
set LOOP= -loop %LOOP%

set COMMAND=..\ffmpeg%START%%LENGTH%%INPUT%%FILTER%%LOOP%%OUTPUT% -y

echo %COMMAND%
echo.
%COMMAND%

echo.
echo. [1] Открыть конечный файл
echo. [2] Выход
echo.
choice /C:12 /N /M "Введите выбор: "
if errorlevel 2 exit 0
if errorlevel 1 (
	start "" %OUTPUT%
	exit 0
)
exit 0