Ratings:
Overall Rating: A
Video Quality: A
Audio Quality: B
Number of Cams: 5
Cost: A+
Tehachapi Live Train Cams is a Youtube based railcam provider, with 5 cameras covering the UP's line between Bakersfield and Mojave CA, including the famous Tehachapi Loop. It is a free service.
Video Quality: Tehachapi cameras operate at the following resolutions:
Tehachapi Loop - 1080P
Tehachapi Depot - 720P
Cable - 2160P (4K)
Giumarra Vineyards - 2160P (4K)
Mohave - 1440P
The Loop camera operates by battery, and I suspect the upload is via satellite internet. All cameras are PTZ, and stream smoothly.
Audio Quality: The sound from the Tehachapi cams is adequate, but without depth. The only trackside camera is the Depot, so that one has the best sound.
Cost: Free
Additional Notes: They have a drone from which they occasionally broadcast live video.
Social Media: They have a Facebook page