Batch file editing using MKVToolNix

[LanguidLegend]

So basically what I'm trying to do is to recursively search out MKV and AVI files in a particular folder and change their apsect ratios to 16:9.

Here is the folder/files setup:
MainFolder\
MainFolder\file1.mkv
MainFolder\file2.avi
...
MainFolder\Subfolder1\
MainFolder\Subfolder1\file1.mkv
MainFolder\Subfolder1\file2.avi
...
MainFolder\Subfolder2\
MainFolder\Subfolder2\file.mkv
...

Here is what I have so far in my batch file (fixAspect.bat):

@echo off
SET mkvmerge="C:\Program Files (x86)\MKVToolNix\mkvmerge.exe"
CD [C:\...\MainFolder]
FOR /R %%I IN (*.mkv) DO (mkvmerge -v -o "%%~nI (remux).mkv" "--aspect-ratio 16/9" "%%~I")
PAUSE

However it seems to skip right down to the PAUSE line every time.. any ideas why?

[sneaker_ger]

Any error messages?

For --aspect-ratio you have to supply a trackID: --aspect-ratio 0:16/9

Mkvpropedit can edit display width and height without remuxing, btw.

[LanguidLegend]

Originally Posted by sneaker_ger

Any error messages?

For --aspect-ratio you have to supply a trackID: --aspect-ratio 0:16/9

Mkvpropedit can edit display width and height without remuxing, btw.

Thanks for the quick reply!
So how would I replace mkvmerge with mkvpropedit in that example?

[sneaker_ger]

You can either set the values in pixels (most common), like e.g.:
mkvpropedit "%%I" --edit track:v1 --set display-width=1920 --set display-height=1080

Or less common:
mkvpropedit "%%I" --edit track:v1 --set display-width=16 --set display-height=9 --set display-unit=3

Be careful when working on files without a backup. What exactly has to be done depends highly on the source files - working with anamorphic files is not trivial.

[LanguidLegend]

Do you know where I can find a complete list of options for the command, because the source website doesn't list those.

[sneaker_ger]

Just run the very first command listed on that website:
mkvpropedit -l

Explanations for valid values are listed in the mkv specs.

[LanguidLegend]

That's awesome, think I got it working!
Thanks


One last thing: I've also been trying to write a batch file which would search folders recursively, merging subtitles (.srt files) with the video files of the same name. Would you know how to do that?

[sneaker_ger]

FOR /R %%I IN (*.srt) DO (
if exist "%%~nI.mkv" mkvmerge -o "%%~nI (remux).mkv" "%%~nI.mkv" "%%I"
)

[LanguidLegend]

Actually I'm stuck on one snag.
Here is my batch file now:

@echo on
SET /P folder=Source folder:
CD /D %folder%
PAUSE
FOR /R %%I IN (*.mkv) DO (mkvpropedit "%%~I" --edit track=v1 --set display-width=16 --set display-height=9 --set display-unit=3)

but I get this output:
A:\#Videos\Movies\#Comedy>(mkvpropedit "A:\#Videos\...\file.mkv" --edit track=v1 --set display-width=16 --set display-height=9 --set display-unit=3)
Error: Invalid selector in '--edit track=v1'.

[sneaker_ger]

--edit track:v1 with ":".

[LanguidLegend]

Originally Posted by sneaker_ger

--edit track:v1 with ":".

oh.... haha thanks

[LanguidLegend]

Thanks for all your help sneaker!

Do you know if there is any utility like this which raises or lowers a video's overall volume?

[sneaker_ger]

None that I know of. There are programs like mp3 gain, aac gain and maybe a few others which could be incorporated into a batch but I don't think anything exists that works directly on mkvfiles without re-encoding.

[LanguidLegend]

Aw too bad, because its weird - I have some files (even within the same season/folder) which are very noticeably louder or quieter than the others. I've tried the replay gain option with VLC but it didn't really make a difference..

[sneaker_ger]

I'm not saying it's impossible, but it requires some work (time) and depending on the format you'll have to live with quality degradation (though it may be impossible not hear).

[LanguidLegend]

Hey sneaker, got another quick followup question for ya.
So here's my code:

@echo off
setlocal enabledelayedexpansion
SET /P folder=Source folder:

CD /D %folder%

FOR /R %%I IN (*.avi) DO (
	ECHO %%~fI
	IF EXIST "%%~fI" ( :if an avi file exists, convert it
		echo "%%~I" exists
		mkvmerge -o "%%~dI%%~pI%%~nI.mkv" "%%I"
		IF EXIST "%%~nI.mkv" ( :if mkv conversion successful, then delete source file
			RECYCLE "%%~fI"
			ECHO "%%~I DELETED" )
	)
)

FOR /R %%I IN (*.mp4) DO (
	ECHO %%~fI
	IF EXIST "%%~fI" ( :if an mp4 file exists, convert it
		echo "%%~I" exists
		mkvmerge -o "%%~dI%%~pI%%~nI.mkv" "%%I"
		IF EXIST "%%~nI.mkv" ( :if mkv conversion successful, then delete source file
			RECYCLE "%%~fI"
			ECHO "%%~I DELETED" )
	)
)
pause

FOR /R %%I IN (*.mkv) DO (mkvpropedit "%%~I" --edit track:v1 --set display-width=16 --set display-height=9 --set display-unit=3)

It is going through folders I know have avi & mp4 files in them but the IF EXIST conditional keeps failing for some reason..

[LanguidLegend]

Actually, figured it out -- had to comment out the setlocal line..