In my opinion JRiver should consider adding support for Matroska. It is a viable alternative to the MP4 container format used e.g. by Nero.
Matroska (MKV) and OGG video conatainers are definately the way forward. I asked Matt about chapter support in MC for these formats a while ago but I guess he couldn't get around to it for this release
http://yabb.jriver.com/interact/index.php?topic=25270.0Can you use the slider on the progress bar?
Jim, unfortunately this is next to useless when you're in Theater View with only a remote.
For what it's worth, I've found a "workaround" to some of MC's current video seek inadequacies which I've been using successfully for some time now. It's called
ffdshow -
http://sourceforge.net/projects/ffdshow. I use this as the primary video playback codec on my machine and it has a very nice "keys and remote" feature which allows you to map additional keyboard shortcuts (which you can then assign to your remote) to it's own FF/REW processing engine. It also has an excellent OSD feature which can show you movie time and system resource info all with the press of a button.
I use the standard MC seek controls (Ctrl+left arrow/right arrow) for the 5 second advance in conjunction with a larger 120 second ffdshow key map (assigned to the next/prev chapter button on my remote).
Yes, it's by no means true chapter support but it makes for a more pleasant video watching experience while we pray for better native support in MC