What's your prefered resolution?

[TEKnician]

I'm converting my anime DVDs to 720x480. Is there a preferred resolution that you guys use other than that?

[l33tmeatwad]

After properly removing the interlacing I like to use 720x540, which is true 4:3 without having to reduce the width resolution, or I use 848x480 if it's widescreen. I use that simply for the main cuts, which I do in AviSynth. Once I'm ready to add effects I will carefully upscale to 720p (either 960x720 or 1280x720) for use in After Effects.

[Kireblue]

For 16:9 footage, I always use 864x480.

[Nya-chan Production]

I'm converting my anime DVDs to 720x480. Is there a preferred resolution that you guys use other than that?

converting my anime DVDs to 720x480.

720x480

[BasharOfTheAges]

Your cruise control is stuck on. I'd have it looked at.

[Castor Troy]

A peaceful one...

[8bit_samurai]

320x244

[Phantasmagoriat]

Just so we're all aware, DVDs are peculiar in the sense that they start out as 720x480(NTSC) or 720x576(PAL) but stretch during playback to their respective AR (Aspect Ratio). This is how all DVD's with a common resolution of 720x480 can be both 4:3 or 16:9-- they just stretch to 720x540 or ~854x480 during playback.

Code: Select all

Aspect Ratio (AR) =
            = WidthxHeight
            = Width/Height
            = Width:Height 

   =  1280x720       =   720x540       =   720x480
   =  1280/720       =   720/540       =   720/480
   =  1280:720       =   720:540       =   720:480
   =    16:9         =     4:3         =     3:2
   =    16/9         =     4/3         =     3/2
   =   1.777...      =   1.333...      =    1.500
   = 'WideScreen'    = 'FullScreen'    =   'Wrong'

   =   640x360       =   640x480
   =   768x432       =   720x540
   =  ~848x480*      =   848x636
   =  1280x720       =   960x720
         etc...      =     etc...

When making an amv, you need to compensate for this, either by

• 1.) Resizing your footage, or
  2.) Making it Stretch during playback by setting an AR flag in the final encoding stage.

You can leave it at 720x480 if you know how to set your AR flag (simple with Zarx264)... and you know what you are doing-- actually you might even get better quality since neither the height or width is being altered, however I don't recommend doing so since it could make things more complicated when you add your own text/effects that will get warped when your footage is stretched during playback. It also leaves the door open for more errors... so I don't really recommend 'Anamorphic' encoding. Actually, I even suspect it can look worse in some players that aren't good at resizing because resizing is not symmetrical vertically and horizontally... which could possibly lead to aliasing (jagged lines) during playback, and might look worse than a lower resolution that uses square pixels (albeit less sharp).

So, the next best thing is to resize either your height or width (but not both) until your video matches the correct Aspect Ratio. That way your vertical or horizontal resolution is unaltered so you don't lose quality in both dimensions. And if you want to be traditional, try to use mod16 values (numbers divisible by 16)... which isn't really necessary any more (1080p anyone?), but could theoretically make the computing more efficient. *So, these are the guiding principals behind using 848x480 for 16:9 footage (720x480-->848x480) which if you look closely isn't actually 16:9 (848/480=1.7666...) but it's close enough while not altering the height and still being mod16 ... so it is commonly used... Of course this minor upscale will increase your file size, but that shouldn't be a problem these days with better compression methods, and improving internet speeds.

So when picking a resolution, you'll want Minimal Resizing from the original, Correct Aspect Ratio, and (maybe Mod16 Values):

FullScreen - 4:3 - 1.333...
640x480 (1.333)
720x540 (1.333)
960x720 (1.333)
etc...

WideScreen - 16:9 - 1.777...
640x360 (1.777)
720x400 (1.800)
768x432 (1.777)
848x480 (1.766)
1024x576 (1.777)
1280x720 (1.777)
etc...

You can get creative with your crop values too... like if you take 720x480 then crop(8,0,-8,-0), you can resize to 704x396 without changing your horizontal resolution, and you still hit the target of 1.777; and the real advantage here is your file sizes will be much, much smaller-- which is nice if you just want to do a quick project. Or crop off some extra pixels from the top/bottom to give your video a more cinematic feel (and have smaller file sizes as a bonus).

Of course... if you take into account upscaling, most of this becomes irrelevant. And if you really want to get picky, you'd have to take into account how your crop/resize values relate to the Active Picture Region... which really just gives you more information than anyone wants to know, or cares about... and probably only applies to really old footage..... so the bottom line: Just get your footage into it's correct Aspect Ratio, and nothing else matters.

[mirkosp]

http://ps-auxw.de/cgi-bin/ar-calc.pl

I just crop what necessary and flag the encode. Overcropping to at least mod4 suggested.

[TEKnician]

WHY WOULD YOU POST THAT?

A peaceful one...

LOL

320x244

c'mon man...thats not even funny...

Minimal Resizing from the original...do not resize both width and height

So i'm looking at the 720x400 cuz its seems that most of my DVDs are 720 wide already, but yet i'm just sighing cuz i finished converting All of Canaan, Clannad AND After Story, Eden of the Friggin east, My Eureka Seven Movie...*cries*...and Ghost in the Shell 2nd gig already. Now i'm kicking myself because I should've asked this sooner!