Software :: Trying To Demux VOB - Subtitles Show Up In Video Stream

I am trying to demux a set of VOB's from a DVD. I want to be able to extract any video/audio/subtitle/closed caption stream to a raw file. Then I want to wrap the streams that I want into an MKV file. (Probably the video, best quality audio, and all of the subtitles. But who knows, maybe all the streams...) To extract the mpeg2 video from the VOB (which I pulled off the DVD using vobcopy) I am trying to use this command:

Code:
$ ffmpeg -i VTS_01_1.VOB -an -sn -vcodec copy -f rawvideo output.mpeg
The problem is, that when I open output.mpeg in something like VLC, the subtitles are still there. I can turn them on/off, but I don't understand why they are there. FYI: if I do -f mpeg2video, I get the same exact output, checked with an md5sum.

Here is a sample output:
Code:
$ ffmpeg -i VTS_01_1.VOB -an -sn -vcodec copy -f rawvideo output.mpeg
FFmpeg version UNKNOWN, Copyright (c) 2000-2010 Fabrice Bellard, et al.
built on Jan 10 2010 17:47:18 with gcc 4.4.2 20091208 (prerelease)configuration: --prefix=/usr --enable-gpl --enable-libmp3lame --enable-libvorbis --enable-libfaac --enable-libfaad --enable-libxvid --enable-libx264 --enable-libtheora --enable-postproc --enable-shared --enable-pthreads --enable-x11grab --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-version3 --enable-nonfree
libavutil 50. 7. 0 / 50. 7. 0
libavcodec 52.45. 0 / 52.45. 0
libavformat 52.46. 0 / 52.46. 0
libavdevice 52. 2. 0 / 52. 2. 0
libswscale 0. 8. 0 / 0. 8. 0
libpostproc 51. 2. 0 / 51. 2. 0
[mpeg @ 0x824b390]max_analyze_duration reached
Input #0, mpeg, from 'VTS_01_1.VOB':
Duration: 00:22:22.22, start: 0.045500, bitrate: 6399 kb/s
Stream #0.0[0x1e0]: Video: mpeg2video, yuv420p, 720x480 [PAR 32:27 DAR 16:9], 7500 kb/s, 27.48 fps, 59.94 tbr, 90k tbn, 59.94 tbc
Stream #0.1[0x80]: Audio: ac3, 48000 Hz, 5.1, s16, 448 kb/s
Stream #0.2[0x81]: Audio: ac3, 0 channels
Output #0, rawvideo, to 'output.mpeg':
Stream #0.0: Video: mpeg2video, yuv420p, 720x480 [PAR 32:27 DAR 16:9], q=2-31, 7500 kb/s, 90k tbn, 29.97 tbc

Stream mapping:
Stream #0.0 -> #0.0
Press [q] to stop encoding
frame=32731 fps=428 q=-1.0 Lsize= 878592kB time=1361.26 bitrate=5287.3kbits/s
video:878592kB audio:0kB global headers:0kB muxing overhead 0.000000%
I'm especially curious about that "max_analyze_duration reached" line.