New answers tagged imovie
Cutting a video at a keyframe, without the slow and lossy process of decoding and re-encoding it, is only possible in the special case where you aren't applying any effects, overlays, rescaling, or anything. And where you're happy with bitrate and decoder requirements of the input. (e.g. h.264 High Profile, Level 4.0) Perhaps fancier editting software ...
If you put the title before the video and put the video after the title, it will extend the length. If you put the title over the video, it will simply be placed over top of the first few seconds of video and the length will remain the same.
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