I've got a 1080 mkv file that plays fine on the Humax using a USB stick, however when I try and play it on the Humax through Mezzmo it says not supported.

I assume this is an issue that can be rectified as it plays OK directly?

I've given the device the profile of "Humax PVR".

NB I haven't tried this since updating to the latest version that came through this morning.

FFMPEG info as follows:

FFmpeg version SVN-r26071, Copyright (c) 2000-2010 the FFmpeg developers
built on Dec 22 2010 10:30:32 with gcc 4.4.2
configuration: --enable-memalign-hack --arch=x86 --target-os=mingw32 --cross-prefix=i686-mingw32- --enable-static --disable-shared --enable-zlib --disable-ffprobe --disable-ffplay --prefix=/media/windows-share/ffmpeg --extra-cflags=-U__STRICT_ANSI__ --enable-libmp3lame --enable-libx264 --enable-gpl --extra-libs='-lx264 -lpthread' --enable-runtime-cpudetect
libavutil 50.35. 0 / 50.35. 0
libavcore 0.16. 0 / 0.16. 0
libavcodec 52.100. 0 / 52.100. 0
libavformat 52.88. 0 / 52.88. 0
libavdevice 52. 2. 2 / 52. 2. 2
libavfilter 1.69. 0 / 1.69. 0
libswscale 0.12. 0 / 0.12. 0
[matroska,webm @ 0003e810] max_analyze_duration reached
[matroska,webm @ 0003e810] Estimating duration from bitrate, this may be inaccurate

Seems stream 0 codec frame rate differs from container frame rate: 47.95 (20000000/417083) -> 23.98 (24000/1001)
Input #0, matroska,webm, from '\\Hpserver\Videos\Test 1080p.mkv':
Duration: 01:42:36.94, start: 0.000000, bitrate: 448 kb/s
Stream #0.0(eng): Video: h264, yuv420p, 1920x1080, PAR 1:1 DAR 16:9, 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc
Stream #0.1: Audio: ac3, 48000 Hz, 5.1, s16, 448 kb/s
Stream #0.2(eng): Subtitle: [0][0][0][0] / 0x0000
At least one output file must be specified


---> DB Level Info: 51