I'm currently using FFMS v579 with MeGUI and i have noticed some random blocking when encoding a bluray VC1 stream in MKV.
These blocks in Frame 947 do actually come out on the final encode as well.
Code:
General
Unique ID : 151178532468450782821249184430171641178 (0x71BBED1F9198E6CA80E93BBF4664555A)
Complete name : D:\backup\CINDERELLA_MAN\CINDERELLA_MAN.mkv
Format : Matroska
Format version : Version 1
File size : 24.7 GiB
Duration : 2h 24mn
Overall bit rate : 24.5 Mbps
Encoded date : UTC 2011-10-23 01:15:30
Writing application : eac3to
Writing library : Haali DirectShow Matroska Muxer 1.11.96.14
Video
ID : 1
Format : VC-1
Format profile : AP@L3
Codec ID : WVC1
Codec ID/Hint : Microsoft
Duration : 2h 24mn
Bit rate : 24.0 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 23.976 fps
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.483
Stream size : 24.2 GiB (98%)
Uploading a sample right now....
Sample
http://www.mediafire.com/?8cy5i8179hunmcy
MD5: 604190103a687e07bddd243d83ec0295
SHA1: 1b1eee32e5e8a765de0b4980ba0a06d57f4766c2