Can't convert .mov to .mp4

[vistad]

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Command line #1:

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avconv -y -i /home/victor/video/EinNeuerHimmel.mov -f mp4 -b 800k -vcodec libx264 -ab 128k -ar 48000 -acodec libvo_aacenc -crf 35.0 -coder 1 -flags +loop -cmp +chroma -partitions +parti4x4+partp8x8+partb8x8 -me_method hex -subq 6 -me_range 16 -g 250 -keyint_min 25 -sc_threshold 40 -i_qfactor 0.71 -b_strategy 1 -qcomp 0.6 -qmin 0 -qmax 69 -qdiff 4 -bf 3 -refs 5 -directpred 3 -trellis 1 -flags2 +bpyramid+mixed_refs+wpred+dct8x8+fastpskip -wpredp 2 -rc_lookahead 50 -threads 0 /home/victor/video/EinNeuerHimmel.mp4

Error detail:

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Error splitting the argument list: Option not found