Thank you for the walkthrough! I was loosely familiar with how transcoding worked, but wasn't sure if this specific library (tdarr) was coded in a way it became a "default" tool to replace plexs transcoding. My background is in small embedded systems for the most part, and I've gotten burned by tools which by default set themselves up to be the, well, default. I'm just used to dealing with much smaller pipelines/stacks.
Based on another response it looks like the issue may actually be around some HDR formatting. I could see that as after I transferred the new machine was using a completely different hardware set, including GPU.
Thanks to you and everyone for walking be through a new tool! If it is an HDR format issue, I imagine I may be able to use Tdarr to address it.
I'm not seeing color space, but there's a bit depth of 8 and some schroma info. Also I'm seeing a codec: MPEG4 and a CodecID: XVID