Artefacts after encoding film @ high bitrate.. (Definitely MeGUI related)

[MGSteve]

I've just encoded Harry Potter 1 with MeGUI has just finished and even on a bitrate of 8000 I still get artefacts from time to time, is this normal?

its not like this all the time, just occasionally when the film cuts from one scene to another.

This is the info on the generated MKV file...

General
Format : Matroska
File size : 8.51 GiB
Duration : 2h 32mn
Overall bit rate : 8000 Kbps
Writing application : x264
Writing library : Haali Matroska Writer b0

Video
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 3 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 2h 32mn
Bit rate : 7676 Kbps
Nominal bit rate : 8000 Kbps
Width : 1920 pixels
Height : 800 pixels
Display aspect ratio : 2.400
Frame rate : 23.976 fps
Colorimetry : 4:2:0
Scan type : Progressive
Bits/(Pixel*Frame) : 0.217
Writing library : x264 core 61 r964M e48a952
Encoding settings : cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x3:0x113 / me=umh / subme=6 / psy_rd=1.0:1.0 / brdo=1 / mixed_ref=1 / me_range=12 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / chroma_qp_offset=-4 / threads=6 / nr=0 / decimate=1 / mbaff=0 / bframes=3 / b_pyramid=0 / b_adapt=1 / b_bias=0 / direct=3 / wpredb=1 / bime=1 / keyint=250 / keyint_min=25 / scenecut=40(pre) / rc=2pass / bitrate=8000 / ratetol=1.0 / qcomp=1.00 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / vbv_maxrate=24000 / vbv_bufsize=24000 / ip_ratio=1.10 / pb_ratio=1.10 / aq=2:1.00

[gav1577]

Upload a sample clip of the source where you get the artfacting but make sure you can reproduce the problem with the sample first before you upload it. use media fire to upload the sample keep it as small as possible

[Dark Shikari]

r964 is broken, update to r965

[gav1577]

Yes update i missed that one :p

[jeffy]

r964 is broken, update to r965

What is broken in r964? Is it mentioned somewhere in the changelog or in some post here? Thank you.

EDIT:
If someone is looking for the explanation, this page and the following: http://forum.doom9.org/showthread.php?t=130364&highlight=r964&page=48

[Sharktooth]

again... it was definatly not megui related but just my fault coz i updated x264 in the auto-update server (after i tested it with 3 encodes and it worked...).

[MGSteve]

Ah, which would explain why it worked fine when I ran the same clip through RipBot. Anyway, It looks like I'll be using RipBot from now on anyway, it does everything I needed meGUI for and it seems to be a bit quicker for some unknown reason! 8fps vs 6fps on the 2nd pass.

[Octo-puss]

And I was wondering why did I get occasional green image in my recent encodes few days ago :)

[Sharktooth]

Ah, which would explain why it worked fine when I ran the same clip through RipBot. Anyway, It looks like I'll be using RipBot from now on anyway, it does everything I needed meGUI for and it seems to be a bit quicker for some unknown reason! 8fps vs 6fps on the 2nd pass.
it depends on the encoder settings used... both ripbot and megui use x264 as encoder (maybe different builds though) and both are GUIs, so both wont affect the encoding speed...

[Dark Eiri]

Yeah, I noticed some bad artifacts on 720p encoding these days. Luckily, I didn't exclude the .ts, hehe.

[Sharktooth]

these days? the x264 build of the buggy revision was up for just few hours...