added ffmpeg scripts for clipping and removing sound for windows

ffmpeg-windows/clip.bat

@@ -0,0 +1,30 @@
+@echo off
+setlocal
+
+if "%~3"=="" (
+    echo Usage: %~nx0 input_file start_time end_time
+    echo Example: %~nx0 video.mp4 00:01:30 00:02:45
+    echo Example: %~nx0 video.mp4 90 165
+    exit /b 1
+)
+
+set "INPUT=%~1"
+set "START=%~2"
+set "END=%~3"
+
+set "OUTPUT=%~dpn1_cropped%~x1"
+
+ffmpeg -hide_banner -loglevel error ^
+    -ss %START% ^
+    -to %END% ^
+    -i "%INPUT%" ^
+    -c copy ^
+    "%OUTPUT%"
+
+if errorlevel 1 (
+    echo Failed.
+    exit /b 1
+)
+
+echo Done.
+echo Output: "%OUTPUT%"

ffmpeg-windows/remove-sound.bat

@@ -0,0 +1,34 @@
+@echo off
+setlocal enabledelayedexpansion
+
+REM Process all video files in the parent directory.
+REM Copies the video stream without re-encoding and removes all audio.
+REM Output files are written to the current directory.
+
+for %%F in (
+    "..\*.mp4"
+    "..\*.mkv"
+    "..\*.mov"
+    "..\*.avi"
+    "..\*.webm"
+    "..\*.m4v"
+    "..\*.ts"
+    "..\*.mts"
+    "..\*.m2ts"
+    "..\*.flv"
+    "..\*.wmv"
+) do (
+    if exist "%%~F" (
+        echo Processing: %%~nxF
+        ffmpeg -hide_banner -loglevel error -y ^
+            -i "%%~F" ^
+            -map 0:v ^
+            -c:v copy ^
+            -an ^
+            "%%~nxF"
+    )
+)
+
+echo.
+echo Done.
+pause