by Bob » Fri May 21, 2010 3:18 am
Just to add a little more information to Paul's suggestion, take some care to consider the size of the video frame when you are preparing photos that will be inserted into a video. The photo can be larger than the video frame size and be scaled down fairly well, but scaling a smaller photo up much above 100% of its size to fill the frame should be avoided as it will appear softer and more pixelated.
Watch out for the "scale to frame" property which is by default turned on. When on, a photo will be scaled to fit the video frame and resampled. Subsequent scaling will apply to the resampled image. That's not good. You are effectively turning a larger photo into a smaller photo. If you need to scale, it's preferable to turn scale to frame off and manually set the scale. That way you will retain the best quality. You can set scale to frame off in the properties where it will apply to all clips subsequently added to the timeline, or you can right click on a specific clip and enable or disable it for that specific clip.
Another approach is to simply place a color matte underneath the photo to hide the unwanted video underneath.