[LeeDerbyshire]

I've an add problem with decoding some avi files. Normally, everything is fine, but I have a collection of Oggy and the Cockroaches (my little son's favourite, so I can't ignore it :-)) that appear extremely blocky and have strange artifacts when viewed with hardware decoding enabled. With software decoding (and on PC, Mac, etc.) they look fine, but it's hard for the Pi to keep them synchronised. ATM, I'm guessing it may be a problem with the Pi itself, but I thought I'd start here. Are there any non-GUI settings that I can tweak?

[popcornmix]

Post the mediainfo of a file.
At a guess I'd say they might be using Hi10p (10-bit H.264) which isn't supported by hardware decoder.

[LeeDerbyshire]

Post the mediainfo of a file.
At a guess I'd say they might be using Hi10p (10-bit H.264) which isn't supported by hardware decoder.

Hi popcornmix, thanks for the reply. Is this what you were asking?

Video
ID : 0
Format : MPEG-4 Visual
Format profile : Advanced Simple@L5
Format settings, BVOP : 1
Format settings, QPel : Yes
Format settings, GMC : 3 warppoints
Format settings, Matrix : Default (H.263)
Codec ID : XVID
Codec ID/Hint : XviD
Duration : 6mn 41s
Bit rate : 1 196 Kbps
Width : 640 pixels
Height : 480 pixels
Display aspect ratio : 5:4
Original display aspect ratio : 4:3
Frame rate : 25.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.156
Stream size : 57.2 MiB (90%)
Writing library : XviD 1.1.0 (UTC 2005-11-22)

[popcornmix]

Okay, GMC/warp points is the problem. No hardware decoders support that.
Kodi Isengard and later switch automatically to software decode when GMC is detected. What kodi distribution/version are you using?

Pi2 should have no problem with software decode of this (640x480) video. Pi1 might struggle.