latter two formats, vbitrate should be set based on personal preference. For instance, if you insist on fitting 20 or so hours on a DVD, you could use vbitrate=400. The resulting video quality would probab... rying to squeeze out the maximum possible quality on a DVD, use vbitrate=9800, but be warned that this... could constrain you to less than an hour of video on a single-layer DVD.
* vstrict: vstrict=0 should
