Please talk about Anamorphic resizing

[kenryuakuma]

Well...Some of the movies can be resized without loss of quality, this is what I have been learning for a while, but I don't really quite grasp the concept of it.

I have seen some of the movies encoded by some of the Chinese people. They are really awesome. A pal DVD, whose original size is 720 x 576, correct? But some people could resize it to 860 x 576 or something and the quality is still as good as the original one prior to resizing...I am just wondering how you guys could do that?

I have tried it but did not really succeed...I just resized it without doing any anomorphics or something. I hope you guys could shed light on this. Or at least get me some help...Really appreciate that.

[aedipuss]

normal dvd is 720x480 or 576 depending on ntsc or pal. the pixels are non-square. they are either 4:3 or 16/9. when 4:3 dvd is converted to square pixel mp4 type output it is 640x480 or 768x576. 16/9 ntsc is 854x480 and pal 1024x576. no mysteries there.

[Cornucopia]

Not enough people coming to this forum understand the concept of Entropy!

Here's a link to what I mentioned just days ago...https://forum.videohelp.com/threads/338251-How-to-make-an-AVI-better-quality-%28keeping...=1#post2101907

Don't kid youself - you change something, you have to re-encode, you lose quality.

Scott

[kenryuakuma]

I know there are a few of the topics discussing the anamorphic resizing...But I am just wondering if you guys could tell me the proper way to do it with MEGUI. I heard some of the people said that we gotta have precise calculation about the Display Aspect Ratio. Some other people use Gordanknot to do the calculation...Anyway, I am a bit confused how you guys accomplish this.