Create merge_split_AVIs.bat

Initial commit at the .bat to merge my old movie files that  are split by CD1 and CD2, and use the .avi format. Names the file after the name of the folder it's in.

merge_split_AVIs.bat

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+@echo off
+setlocal enabledelayedexpansion
+
+:: Get the name of the current directory
+for %%I in (.) do set "FolderName=%%~nI"
+
+set "file1="
+set "file2="
+
+:: Find files containing 'cd1' and 'cd2' in the name
+for %%F in (*cd1*.avi) do set "file1=%%F"
+for %%F in (*cd2*.avi) do set "file2=%%F"
+
+:: Concatenate if both files are found
+if defined file1 if defined file2 (
+    ffmpeg -i "concat:!file1!|!file2!" -c copy "!FolderName!.avi"
+) else (
+    echo Matching file pairs not found.
+)
+
+endlocal