More > JRiver Media Center 29 for Windows
JRVR MC29 Testing [Pre-release / Old]
jmone:
Did some performance testing on the NUC. Subtitles adds about 5ms to the (max) render queue times and hence tips the NUC over the edge with anything above 23.976 (eg older 1080/50i Tv shows). It's fine on Std BD's however which is great.
Hendrik:
Judging from previous comments on subtitles, thats already a lot better then it used to be, correct?
The topic is not done yet, there are important optimizations left to do, the work already done moved subtitles to a different thread and added a lot of flexibility to how its managed to allow us doing the coming optimizations.
jmone:
Correct. Subs are better, don't drop frames and just work.... well, now that I (re)fixed the NVidia driver settings. In fact on my 3090 UHD 59.94 with all the goodies ON + Subs check out the rendering times!
I should get to check a 1660Ti with HDR Tonemapping shortly.
The lowly NUC is just what it is. I'm still surprised how well it does, but there are limits.
jmone:
I did have one issue with the 1660Ti in that subtitles were not being displayed and when checking the right click menu no option was selected (not even Off). While I could select a sub stream, nothing was being displayed and on checking, again nothing was ticked. I've no idea what caused this and could not repeat it as a closed and re-started MC and it was then all fine.
Once that was sorted, there was no issues to report. It all played well with Gemini Man rendering in 5-6ms on the 1660Ti with all the goodies ON + Tonemapping + Subs. The only frame drops I saw was the odd one from not being able to use VideoClock as this setup bitstreams audio for 7.4.2ch). An old request, but it would be great if one day we can detect Atmos/DTS-X and have the option to just bitstream these formats (but then again, more and more material has these anyway).
The only thing that stressed the 1660Ti into dropping frames was 1080 60/50i with FSRCNNX 16. I had to drop it to FSRCNNX 8 for this material (and good use case for Profiles).
Hendrik:
The next version will have another subtitle improvement - instead of rendering a fullscreen overlay, only small rectangles will now be created, which drastically reduces the amount of data being handled.
PS:
May not apply to certain bitmap subtitles, as they can span the entire screen with transparency, which we cannot easily detect without defeating any performance gains. Varies on a disc by disc basis.
Future improvements will instead let the GPU do the scaling of the bitmap subtitles, instead of doing it in software, further improving performance (at least on high resolution).
PPS:
Same improvement for ASS subtitles coming a build after.
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