Do not use the preview files, use Max Render Quality instead for best results.
I'm exporting to flash, h264 and mpeg2. i don't have time to export three times with each one taking 12hours.
the preview files are better quality than the original codec so i should able to use both.
Appreciate your help but I need to know why premiere is ignoring those specific track when that is one of the purposes of building preview files.
looks like a bug to me,
PR can only use preview files if the sequence settings and the export settings are the same.
If you have an AVCHD sequence, which is rendered, and you export to Flash, the rendered files can not be used, because the export format is different, at least that is what makes the most sense.
yeah, thats not been my experience though. With CS3 and CS4 if you built the preview files first it would fly through.
Put it this way, the plugin I use (neat video) when rendering or building previews will go at about 1fps. Without it its about 30fps. maybe more.
Whats confusin me is that in some parts of the sequence it flies through at 30 fps but on track two and cross dissolves it's down to 1fps. Clearly at some point it is using them and at others it isn't.
I've just rendered out the whole sequence to sd mpeg in about 10 minutes by exporting directly so it definately did use the previews files that time but I bet if I go back to h264 it will be weird again. trying to figure out whether using media encoder is the problem.
I'd just like to figure out what is causing it.