MP4 to GIF with FFMPEG

mp4togif.bat

:: File: mp4togif.bat
:: Author: Hadi Cahyadi <cumulus13@gmail.com>
:: Date: 2025-12-22
:: Description: 
:: License: MIT

@echo off
setlocal

:: --- Mandatory Input Checking ---
if "%~1" == "" (
    echo.
    echo ❌ ERROR: You must provide an input file.
    echo.
    goto :eof
)

:: --- Input Variable Settings ---
set "INPUT_FILE=%~1"
:: Output default: Input Name without extention (e.g., color-notify)
set "OUTPUT_NAME=%~n1" 

:: --- Simplified Output Logic ---
:: IF argument %2 EXISTS (NOT EMPTY), OVERRIDE OUTPUT_NAME
if not "%~2" == "" set "OUTPUT_NAME=%~n2"

:: Add .gif extension to output name (always)
set "OUTPUT_FILE=%OUTPUT_NAME%.gif"

:: --- GIF Parameter Settings ---
set "START_TIME=5"
set "DURATION=15"
set "FPS=12"
set "WIDTH=1280"

:: --- FFmpeg command ---
echo.
echo 🎬 Processing Input: "%INPUT_FILE%"
echo 🖼️ The output will be saved as: "%OUTPUT_FILE%"
echo 🕒 Duration: %DURATION% seconds (Starting from %START_TIME% second)
echo ⚙️ Generate GIFs...
echo.

ffmpeg ^
    -ss %START_TIME% ^
    -t %DURATION% ^
    -i "%INPUT_FILE%" ^
    -vf "fps=%FPS%,scale=%WIDTH%:-1:flags=lanczos,split[s0][s1];[s0]palettegen[p];[s1][p]paletteuse" ^
    -loop 0 ^
    "%OUTPUT_FILE%"

:: --- Checking Results ---
if exist "%OUTPUT_FILE%" (
    echo.
    echo ✅ Done! The GIF file has been created.
) else (
    echo.
    echo ❌ ERROR: FFmpeg failed to create GIF file.
    echo.
)

endlocal