Pixellation even on "low" bitrate movies, please help (1 Viewer)

[ramyad]

Hello,

Not had my HTPC for long, self built. I'm getting pixellation on playing back MKV files, example overall bitrate of 662 Kbps. I get pixellation at certain points and when I play the same file through media player classic or windows media player at same point and other pixellation points it does not occur so ruling out corruption.

I can't work out why, when I play through media player classic I don't get any pixellation on any of my files.

Please help, I am really loving mediaportal and would think hardware, sotware and codecs is more than adequate. Please let me know if you need further info.

Thanks,
Ram

Here is some information on components:

Software
MP 1.2.1.0
StreamedMP 1.74 skin
SAF v6.0.1 codec pack
ffdshow DXVA codecs set on video renderer
LAV codecs set on audio codecs.

Hardware
i5 2500K CPU
P8Z68-VPRO motherboard with onboard iGPU though CPU
8gb RAM
64 gb SSD
2tb WD Green media drive
HTPC connect to AV via HDMI

Mediainfo of MKV file:
Format : Matroska
Format version : Version 2
File size : 463 MiB
Duration : 1h 37mn
Overall bit rate : 662 Kbps
Encoded date : UTC 2011-11-29 18:44:10
Writing application : mkvmerge v5.0.1 ('Es ist Sommer') built on Oct 9 2011 11:55:43
Writing library : libebml v1.2.2 + libmatroska v1.3.0

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L3.1
Format settings, CABAC : Yes
Format settings, ReFrames : 3 frames
Muxing mode : Header stripping
Codec ID : V_MPEG4/ISO/AVC
Duration : 1h 37mn
Nominal bit rate : 621 Kbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.028
Writing library : x264 core 92 r1510 33d382a
Encoding settings : cabac=1 / ref=3 / deblock=1:1:1 / analyse=0x3:0x111 / me=hex / subme=7 / 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=3 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / constrained_intra=0 / bframes=1 / b_pyramid=0 / b_adapt=1 / b_bias=0 / direct=2 / wpredb=1 / wpredp=2 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=2pass / mbtree=1 / bitrate=621 / ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / vbv_maxrate=17500 / vbv_bufsize=14000 / ip_ratio=1.40 / aq=1:1.00 / nal_hrd=none
Language : Japanese
Default : Yes
Forced : No

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : HE-AAC / LC
Codec ID : A_AAC
Duration : 1h 37mn
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 44.1 KHz / 22.05 KHz
Compression mode : Lossy
Language : English
Default : Yes
Forced : Yes

 

[Jay_UK]

Hi there,

Can you use graphstudio to confirm what codecs you are using when playing the movie from within MePo.

Can you attach your MePo log

Thanks,

J.

 

[Paranoid Delusion]

Did not know that LAV codecs supported hardware acceleration yet for intel graphics, just Nvidia cuda, so everything would be in software mode.

CHANGELOG.txt - lavfilters - Open-Source DirectShow Media Splitter and Decoders - Google Project Hosting

Saying that a i5 cpu playing a 720p file should be a breeze

 

[ramyad]

Did not know that LAV codecs supported hardware acceleration yet for intel graphics, just Nvidia cuda, so everything would be in software mode.

CHANGELOG.txt - lavfilters - Open-Source DirectShow Media Splitter and Decoders - Google Project Hosting

Saying that a i5 cpu playing a 720p file should be a breeze

Sorry, made mistake on the LAV, using it for audio only. Using ffdshow DXVA option on video. I'll correct the original post.

Hi there,

Can you use graphstudio to confirm what codecs you are using when playing the movie from within MePo.

Can you attach your MePo log

Thanks,

J.

I'll find out how to do that and post the info. Thanks.

 

[ramyad]

Hi there,

Can you use graphstudio to confirm what codecs you are using when playing the movie from within MePo.

Can you attach your MePo log

Thanks,

J.

I've attached the graphstudio log (made a mistake on the codecs, using the ffdshow for video and LAV for audio) and also attached the MediaPortal log file too. Played the movie to the point when it starts pixellating, which has a lot going on on the screen and then stopped MP just after the scene changes and pixellation disappears.

Thanks for looking.