Sorry, full fidelity was lax terminology. What I really meant using a modern lossy codec (e.g. AV1 or H.265) at a high bitrate, so there is no perceptible loss.

Sorry, full fidelity was lax terminology. What I really meant using a modern lossy codec (e.g. AV1 or H.265) at a high bitrate, so there is no perceptible loss. I was under the impression 50Mbps was very good, even for 10-bit HDR 4K.