bjjones 20 Posted December 27, 2021 Share Posted December 27, 2021 @Luke you might want to move this one to the beta forum, not sure if its synology version specific or it might have always been this way. was streaming a 4K to a browser and all 3 behaved differently on beta 4.7.019, was trying to recreate under stable but ran into problems, see above . the top one is streaming to Edge, it doesn't work at all completely stuttered, the second which presents the same but was Chrome real Chrome was flaky, the 3rd firefox played just fine Link to comment Share on other sites More sharing options...
GrimReaper 3292 Posted December 27, 2021 Share Posted December 27, 2021 1. Edge HEVC playback has been broken for some time though it reports support for it, hence DirectPlay, you can maybe hack it by installing previous version of HEVC codec, try 1.0.31823 (uninstall current version first). 2. It appears transcoding was not fast enough and it couldn't keep up, maybe your server was busy doing some other stuff. 3. Here transcoding progress was barely keeping up, with 2 sec buffer. Overall I'd say your HD500 is underpowered or at least bare minimum for 4K HEVC transcoding, and you should preferably try to avoid it alltogether. 1 Link to comment Share on other sites More sharing options...
bjjones 20 Posted December 27, 2021 Author Share Posted December 27, 2021 Thanks for the info. I was mainly curious as to why 3 different browser clients were served completely different streams, especially the Edge one getting a direct play stream. The only reason I brought it up was under 4.6.7 stable I'm pretty sure it also was transcoded down to x264. Took your advice and replaced my HEVC driver with the 1.0.31 one you linked, I was running 1.0.42, it made no difference but having a stable one seems the best advice. It works perfectly in Media Center and Emby Theater as a direct play X265. It's certainly not a powerhouse CPU but the QSV must offload a big chunk of that workload, the CPU utilization shown in resource manager never crept above 30ish percent - I guess the GPU subsystem has it's performance envelope that's aside from the overall CPU and that piece may have been at its limits. Link to comment Share on other sites More sharing options...
Luke 37064 Posted December 28, 2021 Share Posted December 28, 2021 8 hours ago, bjjones said: Thanks for the info. I was mainly curious as to why 3 different browser clients were served completely different streams, especially the Edge one getting a direct play stream. The best available techniques are used for each browser depending on what it supports. Link to comment Share on other sites More sharing options...
Carlo 4330 Posted December 28, 2021 Share Posted December 28, 2021 The best defense for this is your offense: use Theater for Desktop instead. 1 Link to comment Share on other sites More sharing options...
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