[MEncoder-users] Encode yields expected 2GB output, but drops to 2MB output when crop option added

[Graham Lawrence]

Is there possibly a conflict between the "crop" option and those used in
    http://www.mplayerhq.hu/DOCS/HTML/en/menc-feat-vcd-dvd.html
Section 7.8.5.1.

Without the crop option, I get the desired output file of ~2GB. When I
add the crop option, encoding finishes in about a minute, producing a
2MB file. These are the two commands, identical in every respect
except for the crop.

mencoder dvd://1 -dvd-device VIDEO_TS -oac lavc -ovc lavc -of mpeg -nosub \
-mpegopts format=dvd:tsaf -vf crop=688:432:18:72,harddup -srate 48000
-af lavcresample=48000 \
-lavcopts vcodec=mpeg2video:vrc_buf_size=1835:vrc_maxrate=6424:vbitrate=2400:\
keyint=15:vstrict=0:acodec=ac3:abitrate=192:aspect=16/9:vpass=1 -ofps
25 -o movie.1

mencoder dvd://1 -dvd-device VIDEO_TS -oac lavc -ovc lavc -of mpeg -nosub \
-mpegopts format=dvd:tsaf -vf harddup -srate 48000 -af lavcresample=48000 \
-lavcopts vcodec=mpeg2video:vrc_buf_size=1835:vrc_maxrate=6424:vbitrate=2400:\
keyint=15:vstrict=0:acodec=ac3:abitrate=192:aspect=16/9:vpass=1 -ofps
25 -o movie.1

grep CROP log.txt | tail -1
[CROP] Crop area: X: 9..712  Y: 71..504  (-vf crop=688:432:18:72).