Avisynth open failure for cropping

[php111]

Hello,

I am trying to crop off 74 pixels top and 74 pixels bottom.

Before I post my output script. Here is the error I get while trying to load it in VirtualDubMod.

Avisynth open failure:

Avisynth error: YV12 images for output must have a width divisible by 4 (use crop)!



LoadPlugin("C:\Program Files\DGIndex\DGDecode.dll")
MPEG2Source("I:\The_Matrix\dvd2avi.d2v")
Crop(74,0,0,74)

[guns1inger]

Post a g-spot of your source mpeg file

[buzzqw]

the crop values are wrong

you must use :

crop(74,0,0,-74)

in this way you crop left 74, top 0, right 0, bottom 74 (don't know if this crop are correct... seems a little strange)

just use crop(crop_left,crop_top, -crop_right,-crop_bottom)

BHH

[php111]

Post a g-spot of your source mpeg file

I didn't have it as mpeg. I had it as vob's and made a .d2v.

[php111]

Post a g-spot of your source mpeg file

I didn't have it as mpeg. I had it as vob's and made a .d2v.

I tried it with (-) sign and I get the same error.

[php111]

I tried converting it from YUV to RGB and it doesn't know what dvd2avi means and that is the name of my clip.


LoadPlugin("C:\Program Files\DGIndex\DGDecode.dll")
MPEG2Source("I:\The_Matrix\dvd2avi.d2v")
ConvertToRGB(dvd2avi.d2v, matrix="rec709")
Crop(74,0,0,-74)

[Midzuki]

ConvertToRGB24()
Crop(0,74,-0,-74)

[php111]

ConvertToRGB24()
Crop(0,74,-0,-74)

Thank you so much. Your a genius! I had to convert it so I figure I convert it from YV12 to RGB

[php111]

I have no luck today.

Alright, I set everything in the DivX codec. I saved the 1st pass run it in job control. Go back to the codec and set up the Nth back and save it 2ndpass.avi run job later. Go down to job control and start it up and all I got was errors. No warnings. The errors was right next to the name on the right side. I tried the VirtualDubMod first and I got the error so I tried using VirtualDub and still got the error. Maybe perhaps I should VirtualDubMpeg2? What am I doing wrong here?

[poisondeathray]

Can you be more specific about what kind of error message?

What version of avisynth? I had problems with 2.5.8 and when I went back to 2.5.7 they went away

If you've traced the problem to avisynth and you are just doing simple crop & resize, you don't need avisynth. You can open up your VOB's in virtualdubmod and use the internal crop filter.

[manono]

Aren't you going to resize? Removing 74 pixels from both the top and the bottom leaves you with a 720x332 video (if from an NTSC DVD). Unless you are planning on having your player do the resize at playback time, this is going to play as a very strange looking AVI. Can't you tell it looks weird in VDubMod? That's if you ever get it to encode. Instead of trying Midzuki's completely unnecessary conversion to RGB32, why not do it correctly instead? Also, those crop values don't make any sense for either a 4:3 or 16:9 NTSC DVD. How did you come up with cropping 74 pixels from both the top and bottom?

If you've traced the problem to avisynth and you are just doing simple crop & resize, you don't need avisynth. You can open up your VOB's in virtualdubmod and use the internal crop filter.

Well, he's doesn't have any resize in his script, and he should. And using the VDub crop and resize filters necessitates using the much slower and inferior Full Processing where he should be using Fast Recompress, and is a very bad idea. Making the D2V and using MPEG2Source is by far the better way of doing it. He shouldn't be using the ConvertToRGB32() in the script, either.

Thank you so much. Your a genius! I had to convert it so I figure I convert it from YV12 to RGB

No, you don't have to do a colorspace conversion, as DivX produces video in YV12, same as the DVD source. Converting to RGB32 and back again is slow and produces inferior results.

[php111]

Alright,

I got 74 pixels from the main DivX forums. Here is what the person gave me from a while or so ago.

http://forums.divx.com/forum/viewTopic.php?id=3683


If I am going to do it right, which should be the right way? I am here to talk about video with scripts and using any of the VDUB. I am not here to talk about GK or AutoGK products.

[manono]

That poster had the PAL DVD. Is yours PAL? The crop values will be very different for you. By "right way", part of what I mean is a resize. Since that particular thought didn't seem to have occurred to you, you could do worse than to use AutoGK. However, I admire your attempt to do a manual conversion, as misguided as it has been so far, and we are more than willing to help you out.

[php111]

That poster had the PAL DVD. Is yours PAL?

Most of mine are but the one I am working on right it is not. It is NTSC 16:9 progressive 720x480 was the results in DGIndex.

[php111]

OK I understand. I will need help doing a manual conversion and I will do one. How ever I rather use the VDub products for my encodes.

[manono]

And are you working with Spiderman, as he is, or The Matrix, as it seems? Why are you using PAL crop values for a completely different NTSC movie. Get the proper crop values for your movie, and then do a proper resize. If you have the full Gordian Knot installed on your computer, open the D2V in GKnot, go to the Resolution Tab, make sure the Input PAR is ticked as NTSC 16:9, crop away the black bars, taking note of the crop values, do a resize to 640x272 or whatever you like, perhaps cropping a bit more to insure getting a low AR Error, and adjust your script accordingly. That's the way I do it, and I then make my own scripts and encode using VDubMod as well.

[php111]

And are you working with Spiderman, as he is, or The Matrix, as it seems? Why are you using PAL crop values for a completely different NTSC movie. Get the proper crop values for your movie, and then do a proper resize.

How do I get the proper crop values?

I have already made a .d2v file and DeMux the audio.

[manono]

Hehe, I was editing as you were writing. For me, the easiest way to get both the crop and resize values are with the use of GKnot. You can use VDubMod to get the crop values, but unless you're familiar with the resizing math, getting a low AR Error resize can be tricky.

[php111]

Hehe, I was editing as you were writing. For me, the easiest way to get both the crop and resize values are with the use of GKnot. You can use VDubMod to get the crop values, but unless you're familiar with the resizing math, getting a low AR Error resize can be tricky.

Uhh!..... Will you please assist me with getting crop and resize using VDub?

[manono]

Well, I can help you get the crop anyway. Make a basic script and open it in VDubMod:

LoadPlugin("C:\Program Files\DGIndex\DGDecode.dll")
MPEG2Source("I:\The_Matrix\dvd2avi.d2v")

Make sure Video is set for Full Processing Mode (although when encoding it should be set for Fast Recompress). Then Video->Filters->Add->Null Transform->Cropping. If you then tell me what crop values you get for (Left, Top, Right, Bottom) and the width you want (512, 640, 720, etc.), I can give you the final script.

By the way, I'm assuming you made the D2V using Force Film, and that it's 23.976fps. You can confirm in VDubMod by going File->File Information and checking the framerate.

[php111]

Well, I can help you get the crop anyway. Make a basic script and open it in VDubMod:

LoadPlugin("C:\Program Files\DGIndex\DGDecode.dll")
MPEG2Source("I:\The_Matrix\dvd2avi.d2v")

Make sure Video is set for Full Processing Mode (although when encoding it should be set for Fast Recompress). Then Video->Filters->Add->Null Transform->Cropping. If you then tell me what crop values you get for (Left, Top, Right, Bottom) and the width you want (512, 640, 720, etc.), I can give you the final script.

By the way, I'm assuming you made the D2V using Force Film, and that it's 23.976fps. You can confirm in VDubMod by going File->File Information and checking the framerate.

I would not even know where to begin to guess. I wouldn't even know how to make a final script. X1, Y1 and Y2 are all set at 0's.

[php111]

I do use DGIndex, I just name my .d2v as "dvd2avi.d2v" that's all.

Well, I can help you get the crop anyway. Make a basic script and open it in VDubMod:

LoadPlugin("C:\Program Files\DGIndex\DGDecode.dll")
MPEG2Source("I:\The_Matrix\dvd2avi.d2v")

Make sure Video is set for Full Processing Mode (although when encoding it should be set for Fast Recompress). Then Video->Filters->Add->Null Transform->Cropping. If you then tell me what crop values you get for (Left, Top, Right, Bottom) and the width you want (512, 640, 720, etc.), I can give you the final script.

By the way, I'm assuming you made the D2V using Force Film, and that it's 23.976fps. You can confirm in VDubMod by going File->File Information and checking the framerate.

[manono]

There's also an X2. You can scroll around and see the picture, right? So start increasing the Y1 and Y2 crop values from the initial 0 to somewhere around 60 or so, until the black bars above and below the active video are all gone. You'll want even numbered crop values. If there's any black on the left and right sides (X1 and X2), get rid of it as well.

[php111]

There's also an X2. You can scroll around and see the picture, right? So start increasing the Y1 and Y2 crop values from the initial 0 to somewhere around 60 or so, until the black bars above and below the active video are all gone. You'll want even numbered crop values. If there's any black on the right and left sides (X1 and X2), get rid of it as well.

It's not going to work for me. If it was changing something besides on guessing on moving bar around that I can't even tell. I would say I go for it. I am not good at judging to see if something will disappear.

[manono]

I'm sorry, but I don't understand what you said. Scroll to a place where the picture is bright and there are clear, easily seen lines between the black at top and bottom and the movie itself. Then start increasing first the Y1 (using its bottom arrow) until the top black is gone, and then the Y2 (using its top arrow) until the bottom black is gone. Is that what you're having trouble with? If you still can't get it, post a 720x480 pic of a frame here and any of of us can figure it out for you.

[php111]

I'm sorry, but I don't understand what you said. Scroll to a place where the picture is bright and there's a clear easily seen line between the black at top and bottom and the movie itself. Then start increasing first the Y1 (using its bottom arrow) until the top black is gone, and then the Y2 (using its top arrow) until the bottom black is gone. Is that what you're having trouble with? If you still can't get it, post a 720x480 pic of a frame here and any of of us can figure it out for you.

How do I post a pic? I never had to upload anything to a forum before. I rarely even take screen shots. I don't know what kind of programs that are out there freeware and what is the smallest format? I don't want nothing like JPEG. I be here all night uploading.

[manono]

Well, you could take a pic using a player. Most players have that ability. One easy to use one is Media Player Classic. Play a VOB, and then go File->Save Image, and save it as a JPEG. Just before posting in this thread, hit that "Browse" button just above the "Submit" button, browse to the pic, and include the pic along with the post.

I'd figure out the crop/resize values for you but I don't own The Matrix. I don't even like those movies. The longer this goes on, though, and the more trouble you have with a simple thing like cropping a video, the more confirmed in my belief I am that you should be using AutoGK instead.

[php111]

Well, you could take a pic using a player. Most players have that ability. One easy to use one is Media Player Classic. Play a VOB, and then go File->Save Image, and save it as a JPEG. Just before posting in this thread, hit that "Browse" button just above the "Submit" button, browse to the pic, and include the pic along with the post.

I'd figure out the crop/resize values for you but I don't own The Matrix. I don't even like those movies. The longer this goes on, though, and the more trouble you have with a simple thing like cropping a video, the more confirmed in my belief I am that you should be using AutoGK instead.

It's has nothing to do with encoding or writing scripts. Once I know what to write in the script, it's easy. The problem with me I have bad eyes so I really can't tell if a movie is too dark or too light and just because of simple, I am not at all going to use AutoGK for encodes and so on. I just wish there is "one" part that will be easy and that is cropping. If you tell me what to write for a script in pad. I probably will remember the script always.

[manono]

You could use AviSynth's AutoCrop filter, I suppose. You can find it here:

http://avisynth.org/warpenterprises/

I don't use it, so I can't give any advice if you run into problems. And you'll still have to resize after that. I have to go now, so perhaps someone else will step in to help out. Good luck.

[php111]

Does this script look good? Did I do it right?


LoadPlugin("C:\Program Files\DGIndex\DGDecode.dll")
LoadPlugin("C:\Program Files\Auto_Crop\AutoCrop.dll")
LanczosResize(640,480)
MPEG2Source("I:\The_Matrix\dvd2avi.d2v")