If you are faced with the opposite problem--your talking head blathered on too long, and you have to hit a precise video duration--then the new Time Tuner option in the Media Encoder may help. You can enter a duration change of up to 10 percent, plus or minus. If you prefer, you can just set an exact duration, and Premiere Pro CC 2015 will add or remove frames to hit that target. Whichever method you choose, it will not let you exceed 10 percent, which is probably good, because even a five percent increase in duration caused occasional, obvious interpolations in my exported video. A three percent decrease looked better, but I could still see some artifacts, but perhaps that's because I was looking for it.
Premiere Pro CC 2015 is becoming more than an application where we dump all of our assets and then work on them in just that small box. It makes sense to bring the video editing tools closer to the actual captured video, and to expand our creative options beyond the desktop (or laptop, of course). The integration still feels a pretty clunky at times, but I like the direction.
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