Byrneb 4 Posted May 24, 2020 Share Posted May 24, 2020 I recently installed two new 6TB Iron Wolf drives in a DS218+. Using two .mkv files to test with Emby Server: a 720P H.264 plays flawlessly. A FHD HEVC (H.265) plays very briefly before Synology CPU usage pegs at 99% and playback stutters and freezes. ffmpeg usage takes 90% of CPU. The FHD file plays flawlessly on a PC with VLC. Note: When installing DS 218, I did format the pool storage as RAID 0 thinking that would help overall performance. Any help will be appreciated. embyserver.txt ffmpeg-directstream-8d38906d-8165-472c-bc7e-c5ddefacb89e_1.txt ffmpeg-transcode-667bda90-a1d2-4143-b396-df1cbbaf0c97_1.txt Link to comment Share on other sites More sharing options...
Luke 36888 Posted May 24, 2020 Share Posted May 24, 2020 Hi there, can you please attach the hardware detection log as well? thanks. Link to comment Share on other sites More sharing options...
Byrneb 4 Posted May 24, 2020 Author Share Posted May 24, 2020 Hi, Thanks so much for responding. Please see attached. hardware_detection-63725746573.txt hardware_detection-63725848224.txt hardware_detection-63725853575.txt Link to comment Share on other sites More sharing options...
Byrneb 4 Posted May 25, 2020 Author Share Posted May 25, 2020 I made other tests that may be helpful. Please see attached. Link to comment Share on other sites More sharing options...
Byrneb 4 Posted May 27, 2020 Author Share Posted May 27, 2020 Do you have any advice how I could resolve this problem? Thank you. Link to comment Share on other sites More sharing options...
Byrneb 4 Posted June 4, 2020 Author Share Posted June 4, 2020 I have now noticed that my problem mkv video is 10 bit depth and over 4700 kbps bitrate. Could that relate to the problem? Thank you. Link to comment Share on other sites More sharing options...
awkdk 3 Posted June 4, 2020 Share Posted June 4, 2020 What player are you using? The web player can not play HEVC natively, and the server has to transcode to H.264 on the fly. You could try one of the native players, as most of them support HEVC playback. Link to comment Share on other sites More sharing options...
Byrneb 4 Posted June 4, 2020 Author Share Posted June 4, 2020 Thanks for responding. My primary goal is to play it via the Roku app. Is the Emby server (running on DS218+) able to transcode it successfully on the fly. If so, could I have a setting wrong? (Pardon my newbie-ness.) Link to comment Share on other sites More sharing options...
awkdk 3 Posted June 4, 2020 Share Posted June 4, 2020 I don't know Roku, so your best bet is to check the knowledge base at https://support.emby.media/support/solutions/articles/44001161839-roku or ask your question in the Roku forum at https://emby.media/community/index.php?/forum/91-roku/ From your original post, it seems your DS218+ is not powerful enough to transcode on the fly, but you could set up a conversion to H.264 in Emby (either to replace the original or alongside the original). If you set the conversion to original quality, you would get a file about twice the size of the original, but it will play on your Roku directly. Link to comment Share on other sites More sharing options...
Byrneb 4 Posted June 4, 2020 Author Share Posted June 4, 2020 I get it! It appears conversion is a Premier only feature though, right? Link to comment Share on other sites More sharing options...
Solution awkdk 3 Posted June 4, 2020 Solution Share Posted June 4, 2020 (edited) Yes, conversion is Premiere only. Another Premiere feauter is hardware accelerated transcoding, which might make your DS218+ capable of on the fly transcoding. Alternatively, you could download Handbrake and do the conversion manually Edited June 4, 2020 by awkdk 1 Link to comment Share on other sites More sharing options...
Byrneb 4 Posted June 4, 2020 Author Share Posted June 4, 2020 Many thanks for your time and info! Link to comment Share on other sites More sharing options...
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