Agreed Andrew -
For delivery, AVC/H.264 is 8bit and 10 bit is HEVC/H.265 only. H.264 8 bit is fine for most web uploads including 4K for now. H.265 is growing in popularity both for capture and delivery as 4K HEVC claims better image quality at the same bitrate and half the 4K AVC file size. HEVC is a better codec but can require 10X the compute power for software encode/decode which is a challenge for NLEs..
HEVC 10 bit 4:2:0 covers HDR and Rec 2020 for the latest UHD HDR TVs and may be used for broadcast.
Neither AVC or HEVC are "edit friendly" due to high compression rates for timeline decoding.
Hardware assisted decoding is good for editing as per Edius video above.
From the Anandtech link I posted above:
"Intel claims that Kaby Lake-U/Y can handle up to eight 4Kp30 AVC and HEVC decodes simultaneously."
"With Kaby Lake-U/Y's process improvements, even the 4.5W TDP Y-series processors can handle real-time HEVC 4Kp30 encode." HEVC decode support is rated at 4Kp60 up to 120 Mbps.
In terms of encoding/render - software encoding quality, in theory, should be better due to hardware mathematical rounding - but QSV may be acceptable.
RCModelReviews (above) claims QSV is "markedly better than the results I get from DR at the same bitrate"
It's enough to test quality using Handbrake to produce AVC 8bit and HEVC 10bit with and without Intel iGPU Quick Sync (QSV) using a Kaby lake or Coffee Lake i7 CPU and visually compare the results and speed.
Andrew Kolakowski wrote:Decoding/encoding h264/5 and actual video output bit depth on DP/HDMI are 2 different things. Decoding is done on different/dedicated chip which is inside GPU, but also somehow a separate unit.
I'm no expert but according to Anandtech there are three dedicated Fixed Function Media Engines - MFX, VQE and SFC.
"The new circuitry for hardware accelerating HEVC Main10 and VP9 are part of the MFX block. The MFX block can now handle 8b/10b HEVC and VP9 decode and 10b HEVC / 8b VP9 encode. The QuickSync block also gets a few updates to improve quality further, and AVC encode performance also receives a boost.""The Video Quality Engine (VQE) also receives some tweaks for HDR and Wide Color Gamut (Rec.2020) support. Skylake's VQE brought in RAW image processing support with a 16-bit image pipeline for selected filters." Like the suggestion to add support for a second monitor for playback using a GPU, this may not be a solution for the pros (who need the BMD card) but a valuable enhancement for many and a useful feature currently available in many NLEs.
Intel iGPU hardware accelerated encode/decode is supported by the competition including Premiere Pro, Edius, FCPX, VEGAS PRO and others. Many are considered pro NLEs not just for the "consumer market".