Updated Roku Profiles
The problem was the original profile was attempting to capture supported video in an unsupported container, but the Matches line was capturing every container, rather than just the necessary one.
If anyone encounters other issues using the Roku profiles, please reply in this thread and we will see what can be done. Remember that while these profiles attempt to identify the Roku player and assign the correct profile, Roku players don't identify themselves very well and you might need to manually select the best profile for your player.
Remember that if your MP4 container (or any other container for that matter) has lossless audio (TrueHD or Master Audio), standard DTS, or multi-channel AAC, your Roku still requires transcoding for the audio. The video will passthrough, but because the audio is being transcoded fast forward, rewind and resume play are not available.
LG NANO85 4K TV, Samsung JU7100 4K TV, Sony BDP-S3500, Sharp 4K Roku TV, Insignia Roku TV, Roku Ultra, Premiere and Stick, Nvidia Shield, Yamaha RX-V583 AVR.
Primary server: Intel i5-6400, 16 gig ram, Windows 10 Pro, 22 TB hard drive space | Test server Windows 10 Pro, AMD Phenom II X4 965, 8 gig ram
HOWTO: Enable debug logging HOWTO: Identify media file contents