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Intel Quick Sync - caution
AlS
Senior Member Location: South Africa Joined: Sep 23, 2014 18:07 Messages: 290 Offline
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Quick Sync is great for faster render but for users like me who have the older Intel CPUs with 4600 gpus quality may not be what you are expecting. I've used it for years and render out to H.264 and always use Quick Sync but often disappointed with the quality: Here's why:

http://www.anandtech.com/show/7007/intels-haswell-an-htpc-perspective/8

"There's a widespread regression in image quality ranging from appreciably worse to equal at best with Haswell compared to Ivy Bridge."

Quality has improved with the latest Intel Graphics GPUs and latest Intel Graphics is tops at H.265 decoding.

https://software.intel.com/en-us/blogs/2015/10/23/intel-media-server-studio-hevc-codec-wins-transcoding-title

Al

This message was edited 1 time. Last update was at Feb 09. 2017 09:41

Power Director 13&14 Ultimate, Photo Director 6, Audio Dir, Pwr2Go 10
Win 10 64, Intel MB DH87MC, Intel i5-4670 CPU @ 3.40GHz, 16Gb DDR3 1600, 128Gb SSD, 2x1Tb WDBlue 7200rpmSATA6, Intel 4600 GPU, Gigabyte G1 GTX960 4GB, LG BluRay Writer
tomasc [Avatar]
Senior Contributor Joined: Aug 25, 2011 12:33 Messages: 6464 Offline
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Use of quick sync is necessary for those who have the the latest nvidia cards and those with some legacy amd cards and want a PD created BD to work in some of the older cheap BD players. It is the only way other than using a different pc.
AlS
Senior Member Location: South Africa Joined: Sep 23, 2014 18:07 Messages: 290 Offline
[Post New]
Quote Use of quick sync is necessary for those who have the the latest nvidia cards and those with some legacy amd cards and want a PD created BD to work in some of the older cheap BD players. It is the only way other than using a different pc.


I'm suprised. Quick Sync Video (QSV) from Haswell supports H.264/MPEG-4 AVC, VC-1 and H.262/MPEG-2 Part 2 video standards. Rendering with or without QSV My BD player works fine for Mp4 and Mpeg-2. Mpeg-2 is lower compression but sometimes quality looks a bit better. I must admit I've had BD quality issues with PDR. A Mp4 BD never looks as good as an Mp4 file played on a thumb drive thru my BD player to my TV - but that's another issue.

Since Haswell 4600 gpu QSV was upgraded with Broadwell, again with Skylake, and now Kaby Lake with H.265/HEVC Main10/10-bit encoding and decoding acceleration - top rated for both speed and quality.

How is Intel Quick Sync affected by the Nvidia cards??

Al

This message was edited 2 times. Last update was at Feb 09. 2017 10:38

Power Director 13&14 Ultimate, Photo Director 6, Audio Dir, Pwr2Go 10
Win 10 64, Intel MB DH87MC, Intel i5-4670 CPU @ 3.40GHz, 16Gb DDR3 1600, 128Gb SSD, 2x1Tb WDBlue 7200rpmSATA6, Intel 4600 GPU, Gigabyte G1 GTX960 4GB, LG BluRay Writer
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He meant that, at this point, creating a Bluray Disc with nVidia harware aceleration fails, due to an unresolved bug, so you might want to either use the Intel HA (with some quality issues that you mentioned) or just use software encoding for that.

Note that any other conversion (like MP4, MKV, M2TS) works just fine with nVidia. I would just creat the TS files first and then use those to create the BD using SVRT (no more editing).
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Hi,



I am just looking into QS question...I got 2 PCs: 1 Intel NUC5i3 (5th gen with Intel 5500 and QS available) and an i7 2600+GTX660



Just made a super simple render test with the same file on both and i was blown away from the results....will do a proper, serious render test with a real life project tomorrow, but it looks like the little NUC is my possible new editing PC so i can sell the old beast while it has some value on the market.



Basically, the i3 NUC w/t QS killed my i7-2600 desktop with 660GTX :/ will do the proper test and post the results....or delete my reply if this was a one day wonder result XD





EDiT :



same everything for the project (3:48 long clip with intro animation and outro with audio fine tuning and 2 fade effects, exported as H264 MP4 1920x1080p24):

NUC: i3-5010U / 8GB RAM / 120GB SSD -- 2:05

I7 : i7-2600 / 12GB RAM / 120GB SSD -- 1:37



compared to the 3x better CPU and dedicated graphics I think the little NUC did really well with Intel Quick Sync only

This message was edited 2 times. Last update was at Apr 10. 2017 18:44

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