We need people who know virtualdub! please contribute!

[wladston]

If you know virtualdub, please, look at this wiki article:

http://www.s1mp3.org/wiki/index.php/Video_encoding

you will notice it mentions some operations with virtualdub. Can someone please describe step-by-step, to a virtualdub newbie, HOW are these operations done ?

Thanks very very much! - feel free to directly edit the wiki article!

[LKRaider]

I added some steps on how to use the Filters from VirtualDub.

If someone can confirm them and check if everything is written correctly, or add more info, please do

EDIT: maybe some screenshots could help too.

[dazonic]

Here's a batch that crops any video to 128x128 cleanly. Just change the vdub variable to suit. I just right click on a vid, Open With > crop.bat

crop.bat

Code: Select all

cls
set vdub=C:\vdub\vdub.exe
set destdir=%~dp1cropped

if not exist "%destdir%" mkdir "%destdir%"

echo>"%~dpn1.script" declare vd = VirtualDub;
echo>>"%~dpn1.script" vd.Open(vd.params[0]);

rem huffyuv lossless compression
rem http://neuron2.net/www.math.berkeley.edu/benrg/huffyuv.html
echo>>"%~dpn1.script" vd.video.SetCompression(0x75796668,0,10000,0);

echo>>"%~dpn1.script" vd.video.filters.Clear();
echo>>"%~dpn1.script" declare w = vd.video.width;
echo>>"%~dpn1.script" declare h = vd.video.height;
echo>>"%~dpn1.script" declare i = vd.video.filters.Add("resize");
echo>>"%~dpn1.script" vd.video.filters.instance[i].SetClipping((w-h)/2,0,(w-h)/2,0);
rem - or, if source is tall...
rem echo>>"%~dpn1.script" vd.video.filters.instance[i].SetClipping(0,(h-w)/2,0,(h-w)/2);

echo>>"%~dpn1.script" vd.video.filters.instance[i].Config(128, 128, 4);
echo>>"%~dpn1.script" vd.SaveAVI(U"%destdir%\%~n1.avi");

%vdub% /i "%~dpn1.script" %1
del "%~dpn1.script"

This uses VirtualDub's CLI to create, invoke, then delete a script- saving the resized AVI in a new directory 'cropped', in the source directory. This suited me but you change it if you want.

I use Huffyuv lossless compression rather than uncompressed. Download it here http://neuron2.net/www.math.berkeley.edu/benrg/huffyuv.html, or rem that line. It is very fast though, and can save you big bytes. Free too.


Here's another one that will resize your vid to 128 wide, retain the aspect ratio and letterbox the remainder. Good for movies if you don't want to miss out on the side bits (keeps file size down too a bit too).

letterbox.bat

Code: Select all

cls
set vdub=C:\vdub\vdub.exe
set destdir=%~dp1letterbox

if not exist "%destdir%" mkdir "%destdir%"

echo> "%~dpn1.script" declare vd = VirtualDub;
echo>>"%~dpn1.script" vd.Open(vd.params[0]);

rem huffyuv lossless compression
rem http://neuron2.net/www.math.berkeley.edu/benrg/huffyuv.html
echo>>"%~dpn1.script" vd.video.SetCompression(0x75796668,0,10000,0);

echo>>"%~dpn1.script" vd.video.filters.Clear();
echo>>"%~dpn1.script" declare w = vd.video.width;
echo>>"%~dpn1.script" declare h = vd.video.height;
echo>>"%~dpn1.script" declare i = vd.video.filters.Add("resize");
echo>>"%~dp1%~n1.script" vd.video.filters.instance[i].Config(128, h*128.0/w, 4, 128, 128, 0);
rem - or, if source is tall...
rem echo>>"%~dp1%~n1.script" vd.video.filters.instance[i].Config(w*128.0/h, 128, 4, 128, 128, 0);

echo>>"%~dpn1.script" vd.SaveAVI(U"%destdir%\%~n1.avi");

%vdub% /i "%~dpn1.script" %1
del "%~dpn1.script"

I hope this helps somebody out there,

cheers,


- daz

[wladston]

Great work dazonic!!

Will make life MUCH easier for us!

Feel free to update! http://www.s1mp3.org/wiki/index.php/Vir ... orrections

[ace68]

Gotta resurrect this post. Sorry to bother, but right click open with crop.bat doesnt work for me. it just doesnt run. im sure i set the directory of vdub correctly but it just wont run for me. Once i click crop.bat nothing appears in the open with programs (either goes to winamp or notepad). The letterbox.bat works properly. Anyways what's the difference?

also another problem. I ran a video which was about 700MB with letterbox.bat and after it converted it to 128pixels wide the file size ended up to be a WHOPPIN GRAND TOTAL OF FREAKIN 12.2 GB WTF HAPPENED? I thought its supposed to be a smaller file. Lol thanks for the help.

EDIT: ok i made both batch files work but the letterbox batch file still makes the file quite BIGGER.

EDIT: It still makes my files quite bigger, Iassume its because it turns it into an avi file. Another big problem is that the video doesnt correspond with the video. The talking is faster than the video by liek a LOT.

Help please.

[zwiebug]

i could add a detailed frameserving method with avisynth if there is demand.

[BARMAN2005]

What it is this VirtualDub?

[BARMAN2005]

Aha. I should first ask Google.

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