Flickering screen and audio over HDMI.
#1
Ver. Windows Eden RC2
Windows 8 consumer preview patched current as of this post.
intel q6600 64bit
6gb ram
GTS450 driver ver. 296.17
TV is panasonic gt30
Receiver is pioneer vsx-821k

The connection to my receiver seems to flicker when playing H264 videos in XBMC. This does not happen in other media players and does not seem to happen with Xvid.

Everything is connected via HDMI

Here is the paste bin with the file playing for about a min. During this time the problem happened many(12+) times.
http://pastebin.com/6tzHfWPN

And here is the mediainfo for the file in question.
Quote:General
Complete name : G:\test\Testfile.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom
File size : 218 MiB
Duration : 28mn 10s
Overall bit rate mode : Variable
Overall bit rate : 1 081 Kbps
Encoded date : UTC 2011-09-08 11:43:25
Tagged date : UTC 2011-09-08 11:43:25

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings, CABAC : Yes
Format settings, ReFrames : 5 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 28mn 9s
Bit rate : 943 Kbps
Width : 720 pixels
Height : 404 pixels
Display aspect ratio : 16:9
Original display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.135
Stream size : 190 MiB (87%)
Writing library : x264 core 122 r2184 5c85e0a
Encoding settings : cabac=1 / ref=5 / deblock=1:0:0 / analyse=0x3:0x113 / me=umh / subme=8 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=36 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=23 / scenecut=40 / intra_refresh=0 / rc_lookahead=50 / rc=crf / mbtree=1 / crf=19.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00
Encoded date : UTC 2011-09-08 11:43:25
Tagged date : UTC 2011-09-08 11:43:25
Matrix coefficients : BT.709-5, BT.1361, IEC 61966-2-4 709, SMPTE RP177

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 28mn 10s
Bit rate mode : Variable
Bit rate : 132 Kbps
Maximum bit rate : 188 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Delay relative to video : -3s 337ms
Stream size : 26.5 MiB (12%)
Encoded date : UTC 2011-09-08 11:43:25
Tagged date : UTC 2011-09-08 11:43:25

This seems to happen for every video file of this type I can find.

Important This has only begun happening after I updated video card drivers+a couple of windows update
The updates are
Quote: (KB2683430)
(KB2680330)
(KB2683474)
(KB2680826)
I am not sure of what version I updated my video drivers from. However it was most likely whatever was current a month ago when I installed windows 8.

If the answer is simply to revert back to the old drivers that is fine. However I wanted to bring this to the attention of the people who should see it.
If it is a simple setting or something I am missing that would be great too.
Thanks for taking the time to look over this.


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#2
make sure dynamic contrast is turned off in nvidia video setings \
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#3
It is off

I should have mentioned this before.. its not a dimming flicker. The whole screen and audio black out for a half second. This includes xbmc's ui.
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#4
Disabling dxva2 fixed it. Seems like there is a problem with the new Nvidia drivers.
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#5
I'm having exactly the same issue after updating my nvidia driver to 296.10. I have to uninstall the latest driver using driver sweeper and clean my registry with ccleaner before reinstalling (do a clean install) the older driver (285.xx) to get DXVA2 to work again without those flickerings.
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