KDVD vs KVCD Resolutions?
Hi Guys,
I'm using the new MA script and the KDVD full D1 template to produce 2 or 3 movies in a DVD-r. Also I'm trying to see if I'm able to produce miniDVDs with it. 1) Can I change the resolution from 720x576 to 704x576 or 544x576 and still expect it to be a fully compatible DVD? If not, would it help using DVDPatcher, or that just fools the authoring tool thus not making any compliant DVD stream from a 544x576 mpeg2? 2) Looking at this thread http://www.kvcd.net/forum/viewforum.php?f=28 I still get a bit confused on what I should use with 704x576 and with 544x576 even because I don't know if the posted opinions are valid for both KVCD and KDVD. Should I overscan or not? I'm only working with DVD sources and these would be mostly 1.85:1 and 2.35:1 anamorphic. BTW I would like to keep them anamorphic :wink: Thnx C ya |
Re: KDVD vs KVCD: Resolutions
Quote:
Quote:
The problem isn't only to fool the authoring program, but is in the capability of your standalone to handle such resolution. But there is nothing better than a test. So, yes, you can try that and see what happens. Quote:
Quote:
|
Hi Phil,
Thanks for the prompt reply. Yes, you're right. I gave the link of the forum and not the post I wanted :oops: . Sorry about that. I meant this thread http://www.kvcd.net/forum/viewtopic.php?t=2778 . Now, since I'd like to watch my movies mostly on my 32" 16:9 TVset I wouldn't go below 544x576. Since 544x576 isn't in the DVD specs and DVDpatcher wouldn't help, I'll stick with 704x576 :? . I didn't know that we only need overscan on TVsets 8O . But since I need OS I looked at thread http://www.kvcd.net/forum/viewtopic.php?t=8065 to see if I finally understand it, but... I'm a little slower than anybody else in that thread :( . Since I'm making anamorphic KDVDs I believe my MA script should look like this right :?: Code:
#LoadPlugin Area# Should I enter 0,1,2 or 3? Should I stick with 1 and add LetterBox(0,0,8,8)after GripBorders() ? What do you think? Thanks Phil. C ya. |
I agree that was a "headache" thread ;-)
http://www.kvcd.net/forum/viewtopic.php?t=8065 When encoding anamorph sources still in an anamorphic state you don't need to resize! And if you really want to end up with a 704x576 you only ned to crop 8px on the right and 8px on the left by using the Crop() filter of Avisynth . This will end up in a right AR 704x576 stream. Mpeg2Source("MySource.d2v") Crop(8,0,704,576) Next point, the Overscan: This only depends if you try to gain compression, so if you only want to put two 120min 704x576 including AC3 5.1 on one DVD-R, in my eyes no overscan is needed, because yor AVG Bitrate is high enough when using the Notch matrix. IF you want to apply an Overscan, then put you Letterbox(16,16,16,16) behind AddBorders() or GripBorders(). As this overlays the Picture using the Black bars. In my opinion 8px in Letterboxing won't gain that much compression cause MpegEncoings will get the best compression when using the 16px logic (Macroblock). Mpeg2Source("MySource.d2v") Crop(8,0,704,576) TemporalSoften(1,3,5,3,2) Letterbox(16,16,16,16) Thats all you'll need to preserve a good quality. |
Quote:
The "TV overscan" is the way TV sets are configured to crop a part of the image on all sides. As this image is never displayed, is better to put black there insteed of picture information (as black borders are more compressed and take less space in the mpeg file). Quote:
The picture in the TV overscan area won't be ever displayed. So it's completly amazing to decide to put picture there, whatever the compression we already have ! It's a matter of logic in my eyes. |
If its that a matter of logic, why do still most DVD Masterings do not contain these overscan based borders ? (just playing) :wink:
But in case of KDVD - afterwards I totally agree with you! :D |
Hi Incredible.
Thanks for your reply. Nice site you run 8) Quote:
Quote:
Quote:
Quote:
Quote:
Code:
Crop(8,0,704,576) Quote:
|
Quote:
Quote:
IF you use GripCrop, your borders will be added by GripBorders() IF you use the classic Bicubic/LanczosResize, your borders must be added by using Addborders! Quote:
You're already in that needed 704x576 resolution there is no need to add borders afterwards! And to say it more precisely its forbidden! ;-) According to GripBorders or Addborders read my in this reply the lines above, so you'll understand. BTW, just Addborders() wont work, you have to add the needed values, cause Addborders doesn't base on an automatically internal detection routine like GripFit does. ;-) |
Quote:
(else, why the most part of them are in progressive mode ? ;-)) |
Quote:
Do I even need borders :?: Maybe this is the question I should be posting after watching the results I've seen from your script. Quote:
Thanks |
Quote:
a) Do you mean why most of the mastered DVDs are in Progressive mode (shot on film 23.976 conv. to 25 FPS progressive PAL including interlaced flags)?? b) Or are you refering to progressive scan capable video equipment? Choose your weapon :D :D |
Quote:
-kwag |
hmmm
I wonder why when I stoped using GripFilter my CQ dropped so dramatically :roll: ... That could be because I'm working with the whole 704x576 instead of 672x544 as pinpointed by Moviestacker :?: If so maybe I'll better stick with GripFilter with overscan 2 :?: I got to make up my mind and I just don't know what I should do :roll: ... |
Quote:
Your picture isn't fullscreen, it is letterboxed. That means that there are black borders already in the original picture :!: GripCrop, as its name says it, crops the existing black borders and so, after this line, you work only on the film area. Thats is why you have a better CQ with GripCrop : removing black borders, filtering and then adding new borders isn't the same at all than not cutting existing borders and working on the whole picture. Quote:
|
Quote:
Industry film is most delivered on 35mm, besides the main picture information ther're also included 2 optical audio tracks, and more! 24 FPS but every picture will be lighten two times so you will get a loop frequency of 48 frames per second. Thats why you see in cinema the movie "flickerfree". A 35mm FIlm only gots a AR of 1:1,37, and at recording a optical way is used to put the image in an anamorphic state on that material. And when presenting this tape using a Cinema projector also an optical way is used to de-sqeeze the view. This gives us the CenturyFox Trademark 1:2,35 Cinemascope View ;-) And 1966 The Cinemascope Trademark sign was changed to the official name Panavision. But Cinemascope is still used for Widescreen signing. http://www.digitalfaq.com/archives/error.gif On the reel left aside the picturepart is the audio part. Quote:
But I didn't understand whats the problem now? If he wants to do his Encoding non anamorph he can use moviestacker :arrow: more CQ :arrow: but then letterboxed 4:3. That's what I understood as his purpose .. to keep the anamorph state! But maybeit was his confusion according to anamorph and 16:9 view .... and the headache begins as new :). Or am I far far away ??? :) |
Quote:
On the otherway, I thought that the CQ had dopped because there is no plugin resizing the picture :roll: Since I'm not an expert I think I'll leave it as it is with GripFit. Quote:
Quote:
Quote:
Quote:
I'll stick with GripFit. I just don't know in what cases I use overscan 0,1,2 or 3. If there were a simple rule like: 1 - On anamorphic 2.35:1 sources use overscan 3 if you are encoding for anamorphic 16:9 with tmpgenc. 2 - On anamorphic 1.85:1 sources use overscan 2 if you are encoding for anamorphic 16:9 with tmpgenc. 3 - On non anamorphic sources use overscan 0 if ..... See what I mean :?: I just suspect that if I start fooling around with overscan values, I'll end up with a completely wrong AR... Anyway thanks for the advise. |
The how much of tv overscan you apply does depend on how you encode!
If you let your source anamorphic do not apply too much letterboxing on the sides as it will be stretched in its width, tehrefore the borders on the sides will also be scaled! So watch out. On non anamorph encodings speech letterboxed to 4:3 you can apply without problems 16px on all sides using Letterbox. And there you can choose if resized overscan or just overlapped overscan, and how this works and whats about it , you can see at my www page. So finally I understood that you will end up with a letterboxed to 4:3 image containing just a 16:9 widesceen View?? Because then I understood you wrong at the beginning of all this. |
Ok.
From the begining, then: I want my anamorphic widescreen DVDs backed up on KDVDs or miniDVDs using the KDVD Full D1 template written by Kwag. I would tell tmpgenc that the source is 16:9 625 lines (PAL) and I would set the encoding resolution to 704x576 with 16:9 Display AR. Then I would use the latest MA script that Kwag (and perhaps you guys?) wrote. I would like my encodings to be pretty similar to my originals to keep the compatibility with DVD (so maybe I better not use miniDVD?). But I once saw on a thread that I already mentioned on my original post that I should watch out with the overscan. So I learnt that there are 4 possible values for it and that maybe some adjust better for encoding 2.35:1 originals and other maybe for 1.85:1 originals. Now what should I do because I have both but always anamorphic. Please keep in mind that I've been using GripCrop(704,576, overscan=2, dest_anamorphic=true). I just don't know if I should use different value on overscan. Quoting myself. Quote:
|
Site design, images and content © 2002-2024 The Digital FAQ, www.digitalFAQ.com
Forum Software by vBulletin · Copyright © 2024 Jelsoft Enterprises Ltd.