[MPlayer-users] [BUG] mencoder Floating point exception

[Giacomo Comes]

mencoder 1.0rc1 and SVN crash with Floating point exception when making
VCD and SVCD with bframes.

Examples:
VCD
mencoder -of mpeg -mpegopts format=xvcd -ovc lavc -lavcopts vcodec=mpeg1video:vrc_buf_size=327:vrc_minrate=1152:vrc_maxrate=1152:keyint=12:aspect=4/3:vbitrate=1152:vmax_b_frames=2 -o vcd.mpg dvd://1 -aid 128 -ofps 24000/1001 -vf scale=352:240,harddup -oac lavc -lavcopts acodec=mp2:abitrate=224
SVCD
mencoder -of mpeg -mpegopts format=xsvcd:telecine -ovc lavc -lavcopts vcodec=mpeg2video:vrc_buf_size=917:keyint=12:aspect=4/3:vrc_maxrate=2500:vbitrate=2500:vmax_b_frames=2 -o svcd.mpg dvd://1 -aid 128 -ofps 24000/1001 -vf scale=480:480,harddup -oac copy

Without bframes the previous commands complete without error.

The funny stuff is that I can make a DVD with bframes without triggering
the bug:
mencoder -of mpeg -mpegopts format=dvd:telecine -ovc lavc -lavcopts vcodec=mpeg2video:vrc_buf_size=1835:keyint=12:aspect=4/3:vrc_maxrate=7500:vbitrate=7500:vmax_b_frames=2 -o dvd.mpg dvd://1 -aid 128 -ofps 24000/1001 -vf scale=720:480,harddup -oac copy 

I have seen the bug on linux compiling mplayer with gcc 3.4.6 and
FreeBDS compiling mplayer with gcc 4.1.2 therefore I assume
that everybody should be able to reproduce the error.

I suspect that this bug is the same as reported here:
http://lists.mplayerhq.hu/pipermail/mplayer-users/2006-October/063428.html

Giacomo