Log in

View Full Version : Avidemux problem with average bitrate


david.dgc
20th March 2012, 01:51
hi, i use avidemux to convert a 1080p x264 to 720p xvid but when i give a value in 2 pass "average bitrate", the final AVI file NEVER has the bitrate that i gave in the configuration. Why this happens? i calculate the bpp (bitperpixel) to give me the exact bitrate that i need, but when i encode the final file never respects the bitrate...


For exemple, in handbrake when i give a bitrate for the 2 pass, the program "respects" the bitrate that i gave.
With avidemux, i give for example 5000kbs (brrip 720p) and the final avi comes with 3500. :-[
This is annoying because i calculate the bitperpixel before and after hours of convertion, the avi never has the bitrate that i want..

My OS is windows 7 professional SP1 and the avidemux version 2.5.6



there it is my converted file and the screenshots of the settings with avidemux (with the bitrate issue):

http://www.crocko.com/8A11DFE9658C4E3A81DEBD7BCF3D4B32/teste.zip

And the original sample (1080p x264):

http://www.crocko.com/38AC859DCF3545B29F5EBAF6D11352BB/The_Three_Musketeers_2011_Sample.mkv

thanks

CWR03
21st March 2012, 00:23
Why would you want to downgrade a 1080p x264 (already lossy) video to a 720p Xvid (even more lossy) format?

Where is your log from AVIDemux or Handbrake?

david.dgc
21st March 2012, 16:32
Why would you want to downgrade a 1080p x264 (already lossy) video to a 720p Xvid (even more lossy) format?

Where is your log from AVIDemux or Handbrake?

To play on my standalone bluray player. it doesn't accept mkv and x264.

I think the problem comes from "asharp" filter.

CWR03
21st March 2012, 21:08
Will it not play your original BluRay copy of The Three Musketeers (2011) (http://www.imdb.com/title/tt1509767/)?

david.dgc
24th March 2012, 03:38
Will it not play your original BluRay copy of The Three Musketeers (2011) (http://www.imdb.com/title/tt1509767/)?

Of course but i want to backup the movie to a dvd and still with an Hd look. can you help me?

cord-factor
24th March 2012, 08:19
Of course but i want to backup the movie to a dvd and still with an Hd look. can you help me?
DVD is not HD ;)

CWR03
24th March 2012, 09:18
Then go straight from your original Blu-Ray with whatever you used to create your mkv with x264 and instead create an .avi with Xvid.

david.dgc
24th March 2012, 17:08
DVD is not HD ;)

:eek:
did you read what i wrote?
has a said: my bluray player doesn't read x264 codec. Only xvid.
when i talk in dvd, it was the media support. burn a 720p avi xvid in a dvd DL.

cord-factor
25th March 2012, 09:10
did you read what i wrote?
Yes. But why do you do this? Use laptop with HDMI and watch your favorite movies in 1080p, and in any format you want.

kypec
26th March 2012, 16:01
It's kinda hard to believe that a certified BD player doesn't play H.264 format as it is mandatory video codec which must be supported IIRC. Try to mux your x264 encode into .m2ts, .mp4 or .mkv. I'm pretty sure at least one of those will play back fine.