[MEncoder-users] problem with two pass lavc encoding

Lucas Linard lucaspglinard at gmail.com
Thu Feb 15 17:34:06 CET 2007


I usually get the following output when converting avi to mpeg at the second
pass.

"mencoder -oac lavc -ovc lavc -of mpeg -mpegopts format=dvd:tsaf -vf
crop=640:480,scale=720:480,expand=720:576,harddup -srate 48000 -af
lavcresample=48000 -lavcopts
turbo:vcodec=mpeg2video:vrc_buf_size=1835:vrc_maxr
ate=9800:vbitrate=2300:keyint=18:vstrict=0:acodec=
ac3:abitrate=192:aspect=4/3:border_mask=0.5:dark_mask=0.3:vpass=1 -ofps
24000/1001 -o "/dev/null" "[omda]_X_TV_00.avi"
mencoder -oac lavc -ovc lavc -of mpeg -mpegopts format=dvd:tsaf -vf
crop=640:480,scale=720:480,expand=720:576,harddup -srate 48000 -af
lavcresample=48000 -lavcopts
vcodec=mpeg2video:vrc_buf_size=1835:vrc_maxrate=98
00:vbitrate=2300:keyint=18:vstrict=0:acodec=ac3:ab
itrate=192:aspect=4/3:border_mask=0.5:dark_mask=0.3:vpass=2 -ofps 24000/1001
-o "X_03.mpg" "[omda]_X_TV_03.avi""

"The result is
Limiting audio preload to 0.4s.
Increasing audio density to 4.
VDec: vo config request - 640 x 480 (preferred colorspace: Planar YV12)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.

SwScaler: BICUBIC scaler, from Planar YV12 to Planar YV12 using MMX2
videocodec: libavcodec (720x576 fourcc=3267706d [mpg2])
[mpeg2video @ 0x87bb7ec]Error: 2pass curve failed to converge
Could not open codec.
FATAL: Cannot initialize video driver.

Exiting... "
Can anyone help? I1ve tryed th ubuntu forum and got  no help
-- 
Abraços,
Lucas PG Linard
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