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Old 5th February 2013, 13:53   #1  |  Link
LanguidLegend
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Batch file editing using MKVToolNix

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):
Code:
@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?
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Old 5th February 2013, 14:02   #2  |  Link
sneaker_ger
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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.

Last edited by sneaker_ger; 5th February 2013 at 14:04.
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Old 5th February 2013, 14:09   #3  |  Link
LanguidLegend
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Quote:
Originally Posted by sneaker_ger View Post
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?
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Old 5th February 2013, 14:19   #4  |  Link
sneaker_ger
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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.
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Old 5th February 2013, 14:34   #5  |  Link
LanguidLegend
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Do you know where I can find a complete list of options for the command, because the source website doesn't list those.
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Old 5th February 2013, 15:00   #6  |  Link
sneaker_ger
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Just run the very first command listed on that website:
mkvpropedit -l

Explanations for valid values are listed in the mkv specs.
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Old 5th February 2013, 15:37   #7  |  Link
LanguidLegend
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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?
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Old 5th February 2013, 16:07   #8  |  Link
sneaker_ger
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FOR /R %%I IN (*.srt) DO (
if exist "%%~nI.mkv" mkvmerge -o "%%~nI (remux).mkv" "%%~nI.mkv" "%%I"
)
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Old 5th February 2013, 16:09   #9  |  Link
LanguidLegend
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Actually I'm stuck on one snag.
Here is my batch file now:
Code:
@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'.
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Old 5th February 2013, 16:13   #10  |  Link
sneaker_ger
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--edit track:v1 with ":".
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Old 5th February 2013, 16:13   #11  |  Link
LanguidLegend
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Quote:
Originally Posted by sneaker_ger View Post
--edit track:v1 with ":".
oh.... haha thanks
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Old 5th February 2013, 16:29   #12  |  Link
LanguidLegend
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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?
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Old 5th February 2013, 16:31   #13  |  Link
sneaker_ger
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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.
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Old 5th February 2013, 16:36   #14  |  Link
LanguidLegend
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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..
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Old 5th February 2013, 17:29   #15  |  Link
sneaker_ger
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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).
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Old 18th February 2013, 10:46   #16  |  Link
LanguidLegend
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Hey sneaker, got another quick followup question for ya.
So here's my code:
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..

Last edited by LanguidLegend; 18th February 2013 at 10:48.
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Old 18th February 2013, 10:53   #17  |  Link
LanguidLegend
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Actually, figured it out -- had to comment out the setlocal line..
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