how to deinterlace vob files?

Hi guys, good job with Serviio, I love it.. I'm new in this and sorry for my english, i speak spanish.. anyway.. I created a profile for my Player LG BD570 to convert VOB (with LPCM) to MPEG2 + AC3, it works perfect, but, Is there a way to send the command -deinterlace to ffmpeg? some VOB files are interlaced, and it's annoying to watch like this.. thanks in advance!

[zip]

It's not ATM. Is there a way to figure out the video is interlaced from the result of ffmpeg -i ?

Thanks for reply.. Do yo mean this?

  Code:

C:\Archivos de programa\Serviio\lib>ffmpeg.exe -i "D:\Videos\Classics\Rod.Stewart.-.This.Old.Heart.Of.Mine (1990).VOB"
FFmpeg version UNKNOWN, Copyright (c) 2000-2011 the FFmpeg developers
  built on Jan 10 2011 21:46:22 with gcc 4.4.2
  configuration: --enable-static --disable-shared --disable-shared --disable-ffplay --disable-ffserver --enable-memalign
-hack --enable-libmp3lame --arch=x86 --enable-runtime-cpudetect --enable-w32threads --target-os=mingw32 --cross-prefix=i
686-mingw32-
  libavutil     50.36. 0 / 50.36. 0
  libavcore      0.16. 0 /  0.16. 0
  libavcodec    52.108. 0 / 52.108. 0
  libavformat   52.92. 0 / 52.92. 0
  libavdevice   52. 2. 3 / 52. 2. 3
  libavfilter    1.72. 0 /  1.72. 0
  libswscale     0.12. 0 /  0.12. 0
[mpeg @ 0163cf90] max_analyze_duration reached
Input #0, mpeg, from 'D:\Videos\Classics\Rod.Stewart.-.This.Old.Heart.Of.Mine (1990).VOB':
  Duration: 00:04:07.90, start: 0.228411, bitrate: 6317 kb/s
    Stream #0.0[0x1e0]: Video: mpeg2video, yuv420p, 720x480 [PAR 8:9 DAR 4:3], 8000 kb/s, 29.97 fps, 29.97 tbr, 90k tbn,
 59.94 tbc
    Stream #0.1[0xa0]: Audio: pcm_s16be, 48000 Hz, 2 channels, s16, 1536 kb/s
At least one output file must be specified

[zip]

yep... it doesn't say if the file is interlaced or not. I wonder if using -deinterlace on files that are not interlaced will result in error or bad quality videos