Unable set output name in Windows batch

[mmshasan]

Hi,
I found a batch script to download video using YouTube-DL in GitHub. I did some modification but unable set the output name.

Batch Script:

@ECHO OFF
ECHO ======================================================================================================================
ECHO.
SET /P URL="[Enter video URL] "
ECHO.
ECHO ======================================================================================================================
goto formatList

:formatList
ECHO.
ytdlp -F %URL%
ECHO.
ECHO ======================================================================================================================
goto download

:download
ECHO.
SET /P format="Select format: "
ECHO.
ECHO ======================================================================================================================
goto output

:output
ECHO.
SET /P OUTPUT="[Enter Title] "
ECHO.
ECHO ======================================================================================================================

ECHO.
ytdlp -o %%(%OUTPUT%)s.%%(ext)s -f %format% --external-downloader aria2c --external-downloader-args "-j 8 -x 8 -s 8" %URL%
ECHO.
ECHO ======================================================================================================================
ECHO.
ECHO Done!
PAUSE

OUTPUT part is not working.

Thank you.

[ProWo]

What is the original code?
What if you enter g.e. MyWish after the question [Enter Title]?

[mmshasan]

What is the original code?
What if you enter g.e. MyWish after the question [Enter Title]?

This is the original line which I modified with my output version

ytdlp -o %%(title)s.%%(ext)s -f %format% --external-downloader aria2c --external-downloader-args "-j 8 -x 8 -s 8" %URL%

My version

:output
ECHO.
SET /P OUTPUT="[Enter Title] "
ECHO.
ECHO ======================================================================================================================

ytdlp -o %%(%OUTPUT%)s.%%(ext)s -f %format% --external-downloader aria2c --external-downloader-args "-j 8 -x 8 -s 8" %URL%

[ProWo]

Where does the original command line take title and ext from?

[mmshasan]

Where does the original command line take title and ext from?

This is the full original script

@ECHO OFF
color 0A
ECHO ======================================================================================================================
ECHO.
SET /P URL="[Enter video URL] "
ECHO.
ECHO ======================================================================================================================
goto formatList

:formatList
ECHO.
ytdlp -F %URL%
ECHO.
ECHO ======================================================================================================================
goto selection


:selection
ECHO.
ECHO 1) Video + Audio
ECHO 2) Single format (Audio only / Video only)
ECHO.
SET /P option="Select option: "
if %option% == 1 (goto download)
if %option% == 2 (goto downloadSingle)
ECHO.
ECHO Unknown value
ECHO.
ECHO ======================================================================================================================
goto selection

:download
ECHO.
SET /P video="Select video format: "
SET /P audio="Select audio format: "
ECHO.
ECHO ======================================================================================================================
ECHO.
ytdlp -o %%(title)s.%%(ext)s -f %video%+%audio% -i --ignore-config --hls-prefer-native %URL%
ECHO.
ECHO ======================================================================================================================
ECHO.
ECHO Done!
PAUSE
EXIT

:downloadSingle
ECHO.
SET /P format="Select format: "
ECHO.
ECHO ======================================================================================================================
ECHO.
ytdlp -o %%(title)s.%%(ext)s -f %format% --external-downloader aria2c --external-downloader-args "-j 8 -x 8 -s 8" %URL%
ECHO.
ECHO ======================================================================================================================
ECHO.
ECHO Done!
PAUSE
EXIT

Please note, title & ext are the part of youtube-dl parameter. Title also can be set as "Some Title.%(ext)s"

[ProWo]

ytdlp -o %OUTPUT%_%%(title)s.%%(ext)s -f %format% --external-downloader aria2c --external-downloader-args "-j 8 -x 8 -s 8" %URL%

[mmshasan]

ytdlp -o %OUTPUT%_%%(title)s.%%(ext)s -f %format% --external-downloader aria2c --external-downloader-args "-j 8 -x 8 -s 8" %URL%

Thanks your response. I've tried your way but it gave me an error

ERROR: fixed output name but more than one file to download

I figured it out. This is the code I'm using now and working fine.

"%OUTPUT%.%%(ext)s"