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 > Video Encoding > MPEG-4 AVC / H.264

Reply
 
Thread Tools Search this Thread Display Modes
Old 15th June 2008, 09:35   #1  |  Link
Kurtnoise
Swallowed in the Sea
 
Kurtnoise's Avatar
 
Join Date: Oct 2002
Location: Aix-en-Provence, France
Posts: 5,182
[x264] tff vs bff

quoting the strings help :

Quote:
--interlaced Enable pure-interlaced mode (tff)
--tff Alias for --interlaced
--bff Enable pure-interlaced mode (bff)
It's very confusing when we read this imo. So, can we have some tweakings for this please ?



coz my main goal is to know what is (are) the difference(s) between bff and tff ?

Kurtnoise is offline   Reply With Quote
Old 15th June 2008, 10:26   #2  |  Link
Sagittaire
Testeur de codecs
 
Sagittaire's Avatar
 
Join Date: May 2003
Location: France
Posts: 2,413
Well I understand that:

Quote:
--interlaced Enable pure-interlaced mode (tff)
enable interlacing with top field first by default

Quote:
--tff Alias for --interlaced
exactly the same command than --interlaced

Quote:
--bff Enable pure-interlaced mode (bff)
enable interlacing with bottom field first by default

In fact --interlaced command here is useless. you must just know if your interlaced source is bff or tff.
__________________
Le Sagittaire ... ;-)

1- Ateme AVC or x264
2- VP7 or RV10 only for anime
3- XviD, DivX or WMV9
Sagittaire is offline   Reply With Quote
Old 15th June 2008, 10:44   #3  |  Link
Kurtnoise
Swallowed in the Sea
 
Kurtnoise's Avatar
 
Join Date: Oct 2002
Location: Aix-en-Provence, France
Posts: 5,182
ok...So, "bottom Field 1st" & "top Field 1st" should be added in the comments strings help then.
Kurtnoise is offline   Reply With Quote
Old 15th June 2008, 15:12   #4  |  Link
Dark Shikari
x264 developer
 
Dark Shikari's Avatar
 
Join Date: Sep 2005
Posts: 8,690
Talk to the person who maintains that patch; it isn't in git x264.
Dark Shikari is offline   Reply With Quote
Old 15th June 2008, 16:46   #5  |  Link
Gabriel_Bouvigne
L.A.M.E. developer
 
Gabriel_Bouvigne's Avatar
 
Join Date: Dec 2001
Location: Paris - France
Posts: 276
Depending on the underlying implementation, TFF vs BFF might just be a matter of signalisation. TFF just means that within a frame made of 2 fields, the top field should be displayed first, and BFF that the bottom field should be displayed first.
Gabriel_Bouvigne is offline   Reply With Quote
Old 16th June 2008, 06:17   #6  |  Link
nm
Registered User
 
Join Date: Mar 2005
Location: Finland
Posts: 2,643
Quote:
Originally Posted by Gabriel_Bouvigne View Post
Depending on the underlying implementation, TFF vs BFF might just be a matter of signalisation.
Yes, dattrax's patch that adds those parameters is only about signaling interlacing properties within the SEI info. Parameter --interlaced is the MBAFF switch in vanilla x264 and the patch adds --tff and --bff.
nm is offline   Reply With Quote
Reply

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 02:37.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2017, vBulletin Solutions Inc.