Welcome to Doom9's Forum, THE in-place to be for everyone interested in DVD conversion.

Before you start posting please read the forum rules. By posting to this forum you agree to abide by the rules.

 

Go Back   Doom9's Forum > General > Newbies

 
 
Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
Old 20th October 2009, 03:56   #1  |  Link
montython
Registered User
 
Join Date: Oct 2007
Posts: 22
letterbox - bitrate

Does letterboxing add to bitrate requirements assuming a constant visual quality?

For example, let's assume that we have a 512x288 source.
Using common codecs such as xvid, x264, wmv3:

1) Encode to 512x288 output at 1000 kbps.

2) Letterbox (not resize, just add black borders) the source to 1024x576. Encode at 1000 kbps.


I suppose the second one will have exactly the same visual quality, since the black borders are constant throughout the video. The information in the first frame (for black borders) will be replicated for the remaining frames without extra bitrate requirement.

Is this correct?
montython is offline   Reply With Quote
 

Tags
bitrate, letterbox, quality

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 12:28.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.