Pixelation?

[JTDROB31]

To:The fine folks of the Doom9 Forum.


Good day,I have a few home movies I want to burn to dvd.As we all know most are in AVI format and need to be MPEG2 encoded.Ok,everything is good.But I'am having problems with ''Pixelation.''I use Nandub and VirtualDubmod for Avi work.Does
Virdualdubmod or Nandub have a filter for pixelation,I have not seen it?Or do you think I need to work with the video bit-rate?If you could help me out or poit me to the right ''guide'' that would be GREAT.Thanks for all your help and time.


Have a super great day.

[killingspree]

what do you mean by pixelation? perhaps you can provide a screenshot!

oh and some basic reading at doom9.org wouldn't hurt either ;)

steVe

[JTDROB31]

Thanks for the return info Killingspree.I reading up on Divx5 encoding through the guides section.But really not sure if this is what I need.Ok,during some of my movies when things start to move faster than normal that's when I get the ''pixelation.''It has some what of a ''grainy'' look to it.But as things start to slow down or return to normal it looks just fine.Do you think this is a bit-rate problem?Or do you think I should just run it through the Vertualdubmod filter and smooth it out the best I can?Thanks for all your help and time.Yes,I'am also reading through the guides at this time.


Have a great weekend.

[Awatef]

if you want to remove pixelation, you'll have to blur the video heavily using smartsmoother for example.

but I won't recommend this though, rather have pixelation than a totally blurred picture.

And yes it is a bitrate problem. When the bitrate is too low, block noise is generated in action scenes.

[KpeX]

If I'm not mistaken about the 'pixelation' you are referring to, both filters and increasing the bitrate can help solve this problem. We generally refer to such a thing as 'artifacts'. As you've noticed, high-motion scenes require more bitrate to encode due to the nature of the encoding process. Filters can help to smooth your video and increase compressibility, but will also lose some detail. Increasing the bitrate will give the encoder more data to work with, and can also eliminate artifacts if the bitrate is high enough. Hope this helps.

Edit: Awatef beat me to it ;)

[JTDROB31]

Thanks to all who helped me through this small problem.Thanks again.



Have a great day.