New Video : Plex HTPC Overview

Each month Plex (affiliate link) sponsors a tutorial video on the channel covering one of the many, many features of their personal media server and streaming service. This month’s video is about Plex’s recently released an official Home Theater PC (HTPC) client for Windows, Mac and Linux. You can see my review of it here.

This app runs full screen right when loaded and replicates the living room interface experience found on smart TVs and set top boxes. Notable in this release is full support for lossless audio passthrough, client-side “tone mapping” to convert HDR content to a SDR color space on non-HDR displays, and the ability to switch a television into HDR mode for content that supports it.

HDR is a tricky beast with PCs and unfortunately the HDR here is more of a generic profile vs. one based on the metadata of the individual media files. It also does not support Dolby Vision.

Here’s a little more technical detail from the Plex team as to how HDR works:

HDR10: This works when using Windows. MPV creates a Rec.2020 swapchain in D3D11, which outputs to the display. There is a switch in HTPC’s settings to switch the display from SDR -> HDR when you play HDR content.

HDR10 with Static Metadata Passthrough: One of the users in the forums has done a writeup on how to use some of the more experimental features of MPV to do HDR10 with static metadata passthrough. So the maxCLL and maxFall values from the content are sent through to the display. See for more information.

So for the best experience I’d still stick with the most recent Nvidia Shield Pro (the 2019 version). But it’s nice to see Plex showing some love to their most technically inclined users looking to build out their own home theater PC experience.

New Video: Plex Hardware Transcoding on AMD Ryzen

Plex is a long time sponsor of the channel. Each month I produce a sponsored post on a feature of aspect of the product. This month we take another look at hardware transcoding of video content. You can watch my latest Plex video here.

In the past I’ve always recommended that people run their Plex servers on Intel hardware that supports Quicksync technology. Intel builds this into even their lowest end chips and it allows for nearly realtime transcoding of video to reduce bit rate and resolution on demand. For a long time that was about all Plex supported.

But recently a mysterious note appeared on the Plex hardware transcoding support page that indicated some limited support for AMD GPUs:

So I wondered.. Would this work on a Ryzen based Mini PC? It turns out the answer is YES! I took out the Beelink SER4 I reviewed few weeks back, installed the Plex Windows server on it, enabled hardware transcoding, and it started successfully transcoding a BluRay MKV file to a 1080p 8 megabit stream in hardware with minimal CPU utilization. The (hw) in the screenshot below indicates it’s running in hardware mode:

The Beelink SER4 is running with an AMD Ryzen 4800U processor with the latest AMD drivers. As Plex says “your mileage will vary” so I can’t say definitively if this will work on other AMD devices as well as it did here. But it is good to see hardware transcoding compatibility expanding.

Last year we tested it on the Macbook Air M1 and found that it was able to hardware transcode running the Intel version of the Plex server! Plex just announced an official Apple silicon version last week so we’ll give that another test in an upcoming video. Stay tuned!