I switched the Home Streaming from "original" to 4 mbps and it appears to attempt to start streaming with this in the log:
2023/05/14 16:55:53.842359 [ENC] Starting encoder for video1.mp4 in D:\CHANNELS\ChannelsDVR\Streaming\file14000-ip192.168.254.229-3351066118\encoder-50-1092383225 at 50 (235.966000) (encoder=h264_mf, resolution=720, deinterlacer=blend, bitrate=3808, segment_size=0.01)
2023/05/14 16:55:53.871827 [HLS] ffmpeg: file14000-ip192.168.254.229: Guessed Channel Layout for Input Stream #0.0 : stereo
2023/05/14 16:55:53.871827 [HLS] ffmpeg: file14000-ip192.168.254.229: Decoder (codec wmalossless) not found for input stream #0:0
2023/05/14 16:55:54.041822 [ENC] Encoder stopped for video1.mp4 in D:\CHANNELS\ChannelsDVR\Streaming\file14000-ip192.168.254.229-3351066118\encoder-50-1092383225 after starting from 50 without encoding any segments. Marked segment as failed.
but never plays, no video, no audio.