Correcting Overscan

[Pirate_King]

Ok, Ive been encoding with TMPGEnc Plus and my anime always had cut off subtitles. After a LOT of tweeking and testing I found 420x446 was the best for 640x480 source rez. I have other animes and movies with different resolutions and I really dont want to go through all that again to correct overscan. Is there a calculater out there that calculates for overscan?

[FulciLives]

FitCD

If your AVI is 640x480 and you are converting to DVD at 720x480 then your final resolution should be 720x480 but of course that doesn't take any account of TV overscan.

So try 688x464 inside of a window of 720x480 (in other wodrds 16 black on either side and 8 black on the top and bottom).

If that isn't enough to account for your overscan "issue" then try 656x448 inside a window of 720x480 (in other words 32 on either side and 16 on the top and bottom).

- John "FulciLives" Coleman

[Pirate_King]

Sorry but I should have stated that I was making SVCD's and NOT DVD's. What is the formula for calculating ratio's?

[FulciLives]

If your MPEG-4 AVI is 640x480 and you are making a SVCD of it then try 448x448 with 16 pixels all around to make it 480x480

FitCD is easy to use once you "fool around" with it a bit.

- John "FulciLives" Coleman

[Pirate_King]

If your MPEG-4 AVI is 640x480 and you are making a SVCD of it then try 448x448 with 16 pixels all around to make it 480x480

FitCD is easy to use once you "fool around" with it a bit.

- John "FulciLives" Coleman

420x 446 looks better to me, 448x448 cuts off too much on the sides. Now what about wide screen movies on SVCD? Will I have to use a different ratio?

[dafreak]

Ok, Ive been encoding with TMPGEnc Plus and my anime always had cut off subtitles. After a LOT of tweeking and testing I found 420x446 was the best for 640x480 source rez. I have other animes and movies with different resolutions and I really dont want to go through all that again to correct overscan. Is there a calculater out there that calculates for overscan?

for 640 x 480, use center (keep aspect ratio).

edit - nevermind, i see you're making svcd's.

[FulciLives]

If your MPEG-4 AVI is 640x480 and you are making a SVCD of it then try 448x448 with 16 pixels all around to make it 480x480

FitCD is easy to use once you "fool around" with it a bit.

- John "FulciLives" Coleman

420x 446 looks better to me, 448x448 cuts off too much on the sides. Now what about wide screen movies on SVCD? Will I have to use a different ratio?

Sorry but 420x446 will throw off the aspect ratio.

Remember that if you had the original DVD discs they would look like your AVI resized from 640x480 to 480x480 with no account of overscan. The problem is most of these anime AVI files put the subs too low on the screen (don't know why they do this) so on a TV the subs get cut off. So you want to reduce the overscan enough so that you can easily see the subs but you really don't want to overdue it ... after all it is a normal thing (i.e., TV OVERSCAN). Don't think Japanese anime creators don't know this ... they do and account for it.

So yes the image extends off the visible part of the TV screen but they KNOW that and EXPECT that so they don't put anything crucial near the extreme edges of the image.

- John "FulciLives" Coleman

[dafreak]

hey fucil,
I was just farting around with fitcd. on their website it looks like you can preview the cropping that you're doing. where is the button to preview

[FulciLives]

hey fucil,
I was just farting around with fitcd. on their website it looks like you can preview the cropping that you're doing. where is the button to preview

I just heard someone else recently metioned a preview IMAGE and mine doesn't have that so like an hour or so ago I downloaded the newest version of FitCD because the version I have is really old.

I see a picture preview but I don't know if you can actually preview the video. I kinda doubt that.

But I haven't played around with it enough to test all the new stuff in this most current version.

- John "FulciLives" Coleman

P.S.
If you need to crop do it with VirtualDub or GORDIAN KNOT where you get a LARGE image to work with. Once you figure out your crop values just plug them into FitCD

[dafreak]

k, i'll have to keep tooling with it.




oh btw, luffy ownz!!!!

[Pirate_King]

If your MPEG-4 AVI is 640x480 and you are making a SVCD of it then try 448x448 with 16 pixels all around to make it 480x480

FitCD is easy to use once you "fool around" with it a bit.

- John "FulciLives" Coleman

420x 446 looks better to me, 448x448 cuts off too much on the sides. Now what about wide screen movies on SVCD? Will I have to use a different ratio?

Sorry but 420x446 will throw off the aspect ratio.

Remember that if you had the original DVD discs they would look like your AVI resized from 640x480 to 480x480 with no account of overscan. The problem is most of these anime AVI files put the subs too low on the screen (don't know why they do this) so on a TV the subs get cut off. So you want to reduce the overscan enough so that you can easily see the subs but you really don't want to overdue it ... after all it is a normal thing (i.e., TV OVERSCAN). Don't think Japanese anime creators don't know this ... they do and account for it.

So yes the image extends off the visible part of the TV screen but they KNOW that and EXPECT that so they don't put anything crucial near the extreme edges of the image.

- John "FulciLives" Coleman

420x446 hasnt thrown off the apsect ratio at all. Ive compared my TV's picture to my PC's and the TV's picture doesnt look squeezed at all.

[FulciLives]

420x446 hasnt thrown off the apsect ratio at all. Ive compared my TV's picture to my PC's and the TV's picture doesnt look squeezed at all.

You said the AVI was 640x480 so if that is true then a SVCD of that resized to 420x446 is simply incorrect math.

It might not be easy to tell with the naked eye but the aspect ratio is incorrect.

Math does not lie :P

- John "FulciLives" Coleman

[adam]

In order to get the preview in "FitCD" I believe you have to use the full version named Fit2Disk, which requires a small donation to the author. My version has a very nice preview function. That's the best program I ever bought.

[Pirate_King]

420x446 hasnt thrown off the apsect ratio at all. Ive compared my TV's picture to my PC's and the TV's picture doesnt look squeezed at all.

You said the AVI was 640x480 so if that is true then a SVCD of that resized to 420x446 is simply incorrect math.

It might not be easy to tell with the naked eye but the aspect ratio is incorrect.

Math does not lie :P

- John "FulciLives" Coleman

So if 420x446 is the wrong "math" for apect ratio then is the correct math always say 444x444, 446x446, 448x448, etc........? By that logic my picture was squeezed then I guess, but IT LOOKED SO GOOD!

[FulciLives]

If the AVI is 640x480 to start with then the best SVCD resolution to use is 448x448 as this accounts for overscan without "wrecking" your aspect ratio.

- John "FulciLives" Coleman

[Pirate_King]

What about AVI's encoded in widescreen, whats the best ratio?

[FulciLives]

What about AVI's encoded in widescreen, whats the best ratio?

Use FitCD

- John "FulciLives" Coleman

[Pirate_King]

I just got fitcd and its an awesome tool, thanks! Quick question, Im not encoding to PAL format im encoding to NTSC. Do I uncheck PAL in the destination area to get the coorect aspect ratio for NTSC?

[FulciLives]

I just got fitcd and its an awesome tool, thanks! Quick question, Im not encoding to PAL format im encoding to NTSC. Do I uncheck PAL in the destination area to get the coorect aspect ratio for NTSC?

BINGO

- John "FulciLives" Coleman