This forum uses cookies
This forum makes use of cookies to store your login information if you are registered, and your last visit if you are not. Cookies are small text documents stored on your computer; the cookies set by this forum can only be used on this website and pose no security risk. Cookies on this forum also track the specific topics you have read and when you last read them. Please confirm whether you accept or reject these cookies being set.

A cookie will be stored in your browser regardless of choice to prevent you being asked this question again. You will be able to change your cookie settings at any time using the link in the footer.

Error on h264 2.35:1 ratio encoding?
#8
I don't the issue. (I was just confused since you mentioned anamorphic in a way that is seemed wrong to me.)

Anamorphic encoding was introduced since people had a fixed number of pixels, in for example on DVD (720x480 for NTSC, 720x576 for PAL), and wanted to save for example 1024x576 content with a minimum of black borders around it. So anamorphic signaling was introduced which meant, that the one of the dimensions (usually the width) was saved in a compressed/stretched way and the decoder had to stretch/compress the content on decoding.
Thus having 1024x576 pixels were compressed to 720x576 encoded and signaled with a PAR of 1.25 (=1024/576) which told the decoder that on playback the content needed to be stretched to 1024x576 again. (iirc. http://www.widescreen.org has a decent introduction to the history of anamorphic encoding)

Cu Selur
----
Dev versions are in the 'experimental'-folder of my GoogleDrive, which is linked on the download page.
Reply


Messages In This Thread
RE: Error on h264 2.35:1 ratio encoding? - by Selur - 06.04.2018, 04:10

Forum Jump:


Users browsing this thread: 2 Guest(s)