Reading the live feed from Caltrans...
Caltrans District 9 keeps eight still cameras on this whole corridor. There is no camera in Bishop itself, none on the Sherwin Grade, and a long gap south of Crowley Lake. What follows is the full strip, north to south, so you can see both the frames and the gaps before you drive.
See the whole corridor strip on one page

Coleville · 6,902 ft · Caltrans still image

Bridgeport · 6,486 ft · Caltrans still image

Lee Vining · 8,149 ft · Caltrans still image

June Lake · 8,031 ft · Caltrans still image

Mammoth Lakes · 7,529 ft · Caltrans still image

Mammoth Lakes · 6,906 ft · Caltrans still image

Lake Crowley Exit Ramp · 6,886 ft · Caltrans still image

Mammoth Lakes · 7,037 ft · Caltrans still image
Each frame is a still image from a Caltrans District 9 camera, refreshed by Caltrans on its own cadence. A still shows the road surface and the traffic on it at one moment; it is not a video feed and it is never labeled live video here. For the stretches with no camera, the checkpoint list and the town weather pages carry the picture.
Road, weather, and camera data: Caltrans District 9, the California Department of Transportation's Eastern Sierra district.