I'm getting occasional decoding artifacts on the right side of my screen when using the DXVA2 hardware decoder in media player or MPC-HC. The corruption occurs rarely (1/100000 frames rendered) and only on right side of the window. Has anyone else encountered this?
I might be looking at a hardware fault in the Intel graphics HD 620's media decoding engine "gen9.5" (fault in the fixed function VQE is suspected). I just need to be sure. The problem seems to resolve when I disable the hardware noise reduction post processing filter in Image enhancement (Intel graphics control panel).
An update regarding this issue:
I've been able to reproduce this on 2 machines now with the same chipset. I managed to get a hold of a second X1C6 (same specs) to run tests. To my supprise within 10-15 minutes the artifacts occurred on the second system.
Hi, Windows Update installed driver 188.8.131.5272. Artifacting still occurs. The player im using mostly in Media Player Classic. The issues only seems specific to H264 data streams. I've tried dozens of movies (all H264), all have the same effect. I will have to loop the clip you reference and watch it for some time.
I have also seen it in Windows Media Player (Also uses EVR+dxva). Its very difficult to see with a lot of on screen motion or activity. A dark scene or scrolling credits is best to observe it. It has not been observed in VLC player as it dose its image post processing internally (in software) with internal rendering (no EVR) when using dxva2.
common encoding parameters for each bit-stream tested:
ID : 4113 (0x1011)
Menu ID : 1 (0x1)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : 27
Duration : 2 min 3 s
Bit rate mode : Variable
Maximum bit rate : 35.6 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 23.976 (24000/1001) FPS
Standard : NTSC
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Im terribly sorry I took long to respond, I was unavailable and attending to another matter over the weekend. The link provided is OEM build 184.108.40.20619 made available a few months ago and is the most current for my machine. This version was tested some time ago and the issue was present unfortunatly.