Lower resolution video causes odd shaped screen grabs

[Number9]

Hi All,

Working on some video now which I recorded at a lower resolution in order to fit 4 hours per disc (I know, lousy quality but it's what I was asked to do!)

Normally I can 'add current frame to library' perfectly normally and I also drag the chapter thumbnails to the menu for preview thumbnails.

However, because of the lowered resolution, the grabs and thumbnails are all vertically stretched, i.e showing at 325X576 which makes them tall and skinny.

Any ideas why and if I can get round it?

Cheers

James