Render times can be horrific - I wonder how TV News manages to edit and broadcast within minutes!
I have an Intel system Q9770 quad core extreme cpu and it has just taken me 4hrs 41 mins to render a 37min project. as MainConcept Mpeg2, DVDA PAL widescreen.
Just to demonstrate how a few 'minor' changes can make a difference. The first cut I did took 1hr 45mins to render 34min.
I then added 3 extra scenes each about a minute duration. Each scene had a text overlay fade in and out to show highlight where it was shot. One scene also contained a 15second picture-in-picture, another had a 10second image grab from GoogleEarth cross-fade in/out, there were page turn transitions and also about 1 min of voice over. Just adding that upped the render time to 4hrs 41mins!!!!
It doesn't make any sense, the original cut also contained PIP, overlays, transitions, pan & crops music andvoice-overs. Mathematically the extra 3 mins added should only have made the render time increase by minutes, not hours!
Oddly rendering out the audio (which I didn't actually time) seemed a lot quicker
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