Use VLC to convert to H.264/MP4 and Ogg in one go.

vlc transcoding to H.264.sh

# convert to MP4/H.264 and Ogg simultaneously

/Incoming/VLC.app/Contents/MacOS/VLC -I dummy ~/Dropbox/Public/VLC/Original.dv --sout='#duplicate{dst="transcode{vcodec=h264,venc=x264{profile=main,level=3},vb=800,scale=1,acodec=mp4a,ab=128,channels=2,samplerate=32000}:standard{access=file,mux=mp4,dst=/tmp/test.mp4}",dst="transcode{vcodec=theora,vb=800,scale=1,acodec=vorb,ab=128,channels=2,samplerate=32000}:standard{access=file,mux=ogg,dst=/tmp/test.ogg}"}' vlc://quit