PDA

View Full Version : Last part of xvid encode blocky, low bitrate


Azerious
28th January 2006, 07:05
I orginally signed up 5 days ago to find a reason why my Xvid encodes all came out with the last like quarter of the movie looking terrible. Well, since then I have discovered it, but I thought (if it's okay with everyone) that I would post anyway so that anyone doing a search on your forums will be helped as well. I am of course a real n00b when it comes to encoding and others may have the same trouble.

Anyway, If the last part (upto half) of your Xvid encodes come out really blocky and with a low bitrate you may have the quantization 20 setting added for low quality credits on your encoder. This is for you to tell the encoder that after frame so and so use a lower quality (usually for credits cause it saves space) its default I believe is somewhere in the frame 181,000 range (which can be near the middle of some movies). To get rid of this simply open up your encoder options start->Programs->xvid->Confige Encoder. Right on the first form is an option (its in the middle) called zones. for a standard encode you only need the first on starting at frame zero. if theres another one under it that starts at a higher number and says Q 20.00 or something similiar either remove it or when in gknow always set credits start on the video encode form.

Hope this helps anyone having this problem. Took me a while to solve it as I am very new to this type of stuff, and could not find any documentation on the subject.
:) Kevin

InuyashaSama
28th January 2006, 09:10
Thanks for the tip.... I personally find it extremely annoying when I watch an excellent quality movie and when the video reaches the credits it looks terribly blocky. I'd prefer to watch the entire movie with an uniform bitrate... but thanks to codecs as XviD and its weirdo features this usually doesn't happen.

Lil' Jer
28th January 2006, 09:53
but thanks to codecs as XviD and its weirdo features this usually doesn't happen.

Huh? How is being able to set zones with different quantizers a weirdo feature?

killingspree
28th January 2006, 11:36
Thanks for the tip.... I personally find it extremely annoying when I watch an excellent quality movie and when the video reaches the credits it looks terribly blocky. I'd prefer to watch the entire movie with an uniform bitrate... but thanks to codecs as XviD and its weirdo features this usually doesn't happen.

well then do not encode your movies that way, nobody forces you to!

InuyashaSama
28th January 2006, 18:12
Who said I encode them?... no, others encode and I view them. :)

killingspree
28th January 2006, 18:22
you noticed this?? (http://forum.doom9.org/forum-rules.htm)


thread closed...