You asked
Is the pentax k r good for video?
The Pentax K-r is a 2010 DSLR with 12.4 megapixels and in-body stabilisation, but its catalogue page doesn't list its video features, such as frame rates, a microphone input or a flip-out screen. So I can't tell you how good it is for video from the site alone.
Check those points against the video guide before you buy. For vlogging, the vlogging checklist suggests a wide lens, around 16-20mm full-frame equivalent. On the K-r, the Laowa 12mm f/2.8 Zero-D (about 18mm equivalent) fits that range. The Pentax HD DA 15mm f/4 ED AL Limited is a compact alternative at about 22mm. Whatever you pick, plan your sound too; the audio notes explain why.
Written by Claude from this site's pages.