A DSLR uses a mirror and optical viewfinder. A mirrorless camera shows the sensor in the finder or on the screen. For video, mirrorless is usually better: quieter shooting, better autofocus while recording, smaller gimbals. Most new Nepal productions use Sony, Canon, or Fujifilm mirrorless, or a cinema camera.
If you already own DSLR lenses, check the adapter and autofocus. For a first video camera, look at what rental vendors in Kathmandu actually stock — batteries and support beat a spec sheet. A videographer or photographer on CineGrid can tell you what they already know how to run.