fredg89 8 Posted November 11, 2015 Posted November 11, 2015 Does anyone know the processing requirements for transcoding from x265? I know that one 1080p x264 stream is about 2k in cpu score...but does anyone know the needs for x265?
EdgarWallace 3 Posted November 17, 2015 Posted November 17, 2015 (edited) I have a ZOTAC H77-ITX board with an Intel Pentium G2130 (3.2GHz, Dual Core) installed. The CPU has a Single Thread Rating of 1715 and an Average CPU Mark of 3.116. Works very well. The data might give you some idea what you could consider for your build. Edited November 17, 2015 by EdgarWallace
fredg89 8 Posted November 20, 2015 Author Posted November 20, 2015 I have a ZOTAC H77-ITX board with an Intel Pentium G2130 (3.2GHz, Dual Core) installed. The CPU has a Single Thread Rating of 1715 and an Average CPU Mark of 3.116. Works very well. The data might give you some idea what you could consider for your build. I have a system built...Has a I7 4790k. I just wanted to know so that I can decide whether to switch over to x265 or not.
3psus 3 Posted December 29, 2015 Posted December 29, 2015 h.265 is not ready for prime time yet. I would hold off if I were you and encode to h.265 once it has better results (if you don't want to do it over in a year)
Cobra 6 Posted March 9, 2016 Posted March 9, 2016 I tested h.265 playback on IOS client emby server running on i7-5960X transcoding is brutal on the CPU. It was using 43% of 16 cpu cores while playing. I converted a 2 hour video (about 10GB of MPEG2) with mcebuddy h.265 1925kbps bit rate (keeping audio streams) and it got that file down to 1.5GB and looked fantastic. I am struggling with the decision to keep all recordings in this format to save space and live with the heavy cpu use on server during playback. I would be curious to know if any device other than a full PC can playback this type of content without transcoding.
speechles 2055 Posted March 9, 2016 Posted March 9, 2016 The roku4 can directly playback hevc x265 in 8-10bit 24-60fps at resolutions up to 3840x2160 UHD. I think both the nvidia shieldtv and the amazon firetv 4k model can do similar. Sent from my Nexus 7 using Tapatalk
Redshirt 1487 Posted March 9, 2016 Posted March 9, 2016 (edited) Any Android 5.0+ device can decode HEVC/h265 as long as the manufacturer doesn't deviate from official codec support. Amazon doesn't list it as a supported codec and the FTV Gen1 fails to play it, even after updating to 5.0. Don't get me started on the Fire TV Stick either Edited March 9, 2016 by Redshirt
weeks 17 Posted March 17, 2016 Posted March 17, 2016 Y I have a system built...Has a I7 4790k. I just wanted to know so that I can decide whether to switch over to x265 or not. You are fine.
jds828 24 Posted March 18, 2016 Posted March 18, 2016 I use a 4790 (not K) and that's fine with x265. The 4K ones give it a bit of hammer but it copes. I've re-encoded quite a few of my films to it with excellent results in both file size and quality. As said above, it's not 100% ready for everyday use just yet so I wouldn't go deleting your x264.
Cobra 6 Posted March 18, 2016 Posted March 18, 2016 I use a 4790 (not K) and that's fine with x265. The 4K ones give it a bit of hammer but it copes. I've re-encoded quite a few of my films to it with excellent results in both file size and quality. As said above, it's not 100% ready for everyday use just yet so I wouldn't go deleting your x264. Do you have QuickSync turned on for transcoding? If so do you notice it help with x265 content over CPU transcoding? From what I have seen x265 really puts a beating on even a high end CPU to the point where I would not want to be transcoding multiple streams at once. I frequently playback on IOS client and of course that does not have direct playback support yet so due to that sticking with x264 where it can play direct and no server CPU overhead.
jds828 24 Posted March 22, 2016 Posted March 22, 2016 Do you have QuickSync turned on for transcoding? If so do you notice it help with x265 content over CPU transcoding? From what I have seen x265 really puts a beating on even a high end CPU to the point where I would not want to be transcoding multiple streams at once. I frequently playback on IOS client and of course that does not have direct playback support yet so due to that sticking with x264 where it can play direct and no server CPU overhead. No I don't. I've not fully tested all Emby settings with it yet. I can't say about IOS but my Daughter has a Mac book pro (2015) and that doesn't play well with x265. You might wan't to create a few test videos of your own. At first I just downloaded film trailers and set various video/audio bitrates. I use staxrip to encode 2 pass10 bit 1080p/2160p x265 with AAC-HE 5.1/7.1 audio. And be prepared for a wait...a long wait! Encoding HD in x265 is very slow.
anderbytes 141 Posted March 22, 2016 Posted March 22, 2016 I agree with @@3psus, H265 is too new and lots of hardware struggle too much to process it. For now I decided to keep media as H264 using more space, than frying my CPU every time I want to watch something.
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