MakeMKV support forum
It is currently Wed Jul 18, 2018 6:33 pm

All times are UTC

Post new topic Reply to topic  [ 2 posts ] 
Author Message
PostPosted: Tue Jun 20, 2017 6:07 am 

Joined: Fri Feb 10, 2017 5:57 am
Posts: 7
Usually the top / labelled side of the BD has video with the 16:9 aspect ratio, but I ran into one that had 4:3 on the "top" side and 16:9 on the "bottom". I look all over the case, the disc, and the MKV details screen, but I did't see the aspect ratio anywhere. Is there a way to tell what aspect ratio each side is which using MakeMKV or another tool?


---Edited to replace "DVD" with "BD" and make the question clearer ---

Last edited by ikomrad on Wed Jun 21, 2017 3:52 am, edited 1 time in total.

Reply with quote  
PostPosted: Tue Jun 20, 2017 12:35 pm 

Joined: Sun Jul 24, 2011 11:21 pm
Posts: 5198
"Blu-Ray DVD" is a conflicting term... You either have a DVD or a BD.

DVD's representation is 4:3, but there are ways to make it act like other aspect ratios. One is anamorphic, where the horizontal and vertical dimensions of a "pixel" are different, and the other is to letter-box the image, where the top and bottom of the picture area are black bars. Usually, there is a combination of these, to make 16:9. And where this information is stored can vary on the disk; it's supposed to be in two places (directory information and beginning of the video stream), but it may be in only one of them.

Typically, you will see "Wide Screen" on one side, if the disk is two-sided.

BD native is 16:9, but, like DVD, different aspect ratios can be crammed into it.

How to aid in finding the answer to your problem: http://www.makemkv.com/faq/item/8

Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 2 posts ] 

All times are UTC

Who is online

Users browsing this forum: No registered users and 13 guests

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group