[Doomimus]

My AMVs were DQ'ed for the above-mentioned reason. To fix this, am I supposed de-interlace the video? I ask because when I do, the line quality of the characters becomes somewhat jagged. Is this supposed to happen?

Here's an image comparing the interlaced to the de-interlaced images: http://idisk.mac.com...Public?view=web Just click on the download button on the right to view the file. Is it supposed to look like the images on the right?

Also, what exactly is meant by "potential improper handling of interlaced source"?

Thanks for the help.

This post has been edited by Doomimus: 10 April 2009 - 08:49 AM

[ngsilver]

From your image, dispite the jaggies, the non-interlaced version looks MUCH better then the interlaced version. I think the problem with the decimated version is just that the wrong frame order was chosen (which can cause that problem) or a badly encoded DVD which makes proper filtering of the source difficult. You can help fix that problem if you smooth your footage after decimating and then sharpen it while increasing the thickness of lines in the source. Also if you are resizing the source (such as making it larger) it can cause that problem as well. And finally, the functions/programs you are using to clean up your footage could be causing that as well.

I'm guessing by the program you used to show us the image that you are editing on mac. I am not versed in programs for the mac for editing and cleaning up footage. However, as with anything AMV related, you can ask your questions on animemusicvideos.org's forums in order to get help. Though when you ask your question to need to also state what kind of programs you are using and what OS you use, otherwise no one can really help you because they don't know what you use.

[Outlawed]

ngsilver, on Apr 11 2009, 02:21 PM, said:

From your image, dispite the jaggies, the non-interlaced version looks MUCH better then the interlaced version. I think the problem with the decimated version is just that the wrong frame order was chosen (which can cause that problem) or a badly encoded DVD which makes proper filtering of the source difficult.

As I mentioned in e-mail discourse with Doomimus this can be a very complicated subject due to the software or editing processes being used.

"Decimate" is a function for certain filters like Decomb in Avisynth and Doomimus most likely doesn't process footage using Avisynth.

De-interlacing is a destructive process. You will lose image data when doing it. There are many "smart" filters out there which can greatly reduce this quality hit by only de-interlacing parts that move in the video (this is where that banding comes into play which is present in the images Doomimus posted). If you are using Windows you can use this filter ( http://neuron2.net/smart/smart.html ) with VirtualDub. It may improve your results.

If you just rip the DVDs and do not process the footage in some way that footage will be interlaced. At some point you will have to de-interlace or when things move in the video you will see that banding on a computer. Some choose to do de-interlacing in post-production and edit interlaced (because they are not doing any digital effects that will cause issues or one of their later intended output formats is NTSC which is of course interlaced).

The only way to have 100% progressive footage with 0 image data loss is to IVTC the footage before you edit.

There is also another potential issue with interlaced footage which can cause issues for people both in progressive or interlaced final output formats and that is field order. If you get footage that has mixed field orders you have to get them so they are all de-interlaced to start or they all have the same field order before you edit.

[Outlawed]

One thing to add. We will be having a AMV creation panel as usual at ACen. I encourage anyone who has tech or creation questions to come! I cannot give the exact times right now but we should have a schedule for the AMV room posted soon.

[chui101]

Outlawed, on Apr 13 2009, 08:20 AM, said:

One thing to add. We will be having a AMV creation panel as usual at ACen. I encourage anyone who has tech or creation questions to come! I cannot give the exact times right now but we should have a schedule for the AMV room posted soon.

That's the one I'm helping out with!