Finally watched the Certfiable DVD, yesterday and noticed that most of the wide shots are from the Rio concert, which was immediately after the Buenos Aires gigs. I could easily recognize Maracana Stadium on almost every song. I believe all or most of the medium and close up shots are from Argentina at River Plate's Stadium.
That probably explains why they've used basically the same or similar color outfits in both shows (Rio and Buenos Aires)
The sound is great, the overdubs are ok with me. Loved it!!