(2014-09-30, 12:57)raid517 Wrote: With I tried 1080i, both with interlacing and without. If anything 1080i playback with interlacing is worse.
There should be no need to alter the TV settings. The issue is that your tuners are receiving - and thus XBMC is decoding and displaying - either an interlaced signal or a progressive scan signal. Interlacing really relies on 'persistence of vision', i.e. the fact that your eye doesn't notice one set of lines fading on the screen while the next set is drawn, although it made more sense on a CRT (that faded slowly) than it perhaps does on a digital monitor.
Deinterlacing is the process of using this information to make 'full' frames for display, instead of showing lines 1,3,5,7... 1077,1079 and then 2,4,6,8...1078,1080. There are many ways to deinterlace, many using different mathematical formulae to merge between frames. That's what XBMC does when you switch on deinterlacing and select an algorithm: it tries different ways of merging the interlaced fields into a single frame, and then sends that to your TV as a progressive image. That means your TV never even sees an interlaced signal and thus it never changes mode.
(2014-09-30, 12:57)raid517 Wrote: I'm not quite certain how to do either of these. Should I just record some video with the th XBMC PVR?
Yes, that'd be a start.
1. Record something that shows the artefacts
2. Make a note of the scene and time at which you see the artefacts
3. Play the recording back through the Live TV menu - are the artefacts still there?
4. Play it through the files menu - are the artefacts still there?
5. Upload the file somewhere so someone else can test it, looking for the same behaviour in the same scene
6. Switch on debugging and grab a debug log of a stream (live or recorded) that shows the behaviour