Changes between Version 15 and Version 16 of Hardware/QuickSync

Timestamp:

Oct 11, 2021, 3:25:48 AM (5 years ago)

Author:

softworkz

Comment:

--

Hardware/QuickSync

@@ -44 +44 @@
   This is a mostly-free [#i965 (but see below)] driver for the libva / VAAPI instructure.  Most Linux distributions package it.
 VAAPI with iHD driver
-  The back-end of libmfx on Linux uses a modified libva and VAAPI driver; this can also be used directly by the user.
+  The newer VAAPI driver variant from Intel which is also used by libmfx on Linux. There's a completely free distribution and one that includes closed-source kernels.
 
 
@@ -61 +61 @@
 ||  iHD driver    ||  gen8+                   || [https://github.com/intel/media-driver] ||
 
-=== VAAPI VS libmfx ===
-
-VAAPI / i965
-* Packaged as standard in most Linux distributions.
-* Runs on all usable hardware, including older and cheaper devices.
-* Wider codec support.
-* Common API for applications which may also use AMD / Nvidia hardware with Mesa.
-* Interopable with standard APIs (EGL/OpenGL, OpenCL).
-
-libmfx / iHD
+=== i965  vs. iHD Driver vs. libmfx ===
+
+i965 Driver
+* Supports VAAPI 
+* i965 is packaged as standard in most Linux distributions.
+* Runs on older and cheaper devices.
+* Common API for applications which may also use AMD hardware with Mesa.
+* Interoperable with standard APIs (EGL/OpenGL, OpenCL).
+
+iHD Driver
+* Supports VAAPI and libmfx (MSDK)
+* Interoperable with OpenCL and Intel OpenCL extensions
+
+iHD + libmfx (MSDK)
 * May give better encode quality in some cases (such as look_ahead).
-* May give higher encode throughput in some cases (such as MFE, particularly on Iris graphics).
+* Provides higher encode throughput in many cases
+* Wider codec support (e.g. HEVC and AV1)
 * Common API for applications which may also run on Windows.
-* Interoperable with Intel OpenCL implementation.
-
-The iHD libva driver also provides similar VAAPI functionality as the opensource i965 driver. But; HEVC encoding is for evaluation purposes only and will limit the encode to a mere 1000 frames.
-
-Ref: https://gist.github.com/SeanMollet/0eed16e80630ab67532890a9d42132af
+
 
 == Windows ==
@@ -113 +114 @@
 }}}
 
-=== Install with MediaServerStudio ===
-Note that the kernel patches and modified system libraries are all required.  It is recommended not to install this on any machine also used for other purposes, as it does not use normal distribution mechanisms and may break / be broken by other packages unexpectedly.
-
-Build machine:
-* Build and install the packaged dispatcher: <https://github.com/lu-zero/mfx_dispatch>.  (It is also possible to extract the necessary files from the Media SDK installation as described in the install manual - this is not recommended, just use the package instead.)
-
-Target machine:
-* Ensure the target machine has a supported CPU.  Current versions only support gen8/gen9 graphics on expensive CPUs ("Xeon"/"Core i" branding).  The same graphics cores on cheaper CPUs ("Pentium"/"Celeron"/"Atom" branding) are explicitly disabled, presumably for commercial reasons.
-* Get a clean version of the supported kernel version (currently 4.4: <https://www.kernel.org/pub/linux/kernel/v4.x/linux-4.4.tar.xz>) and apply the supplied patches.  Build and install.
-* Build and install the supplied libva and libdrm trees.
-* Run the Media SDK install script to install the proprietary components.
-* Reboot.
 
 === Build FFmpeg with MSDK ===