I have created new projects using only a single jpg image in a 10 second exported video.
The clip/sequence preview I am using is 512 x 288 (16:9)
The jpg image resolution is 2560 x 1920
The export settings are 720p, mp4, 29.97fps
I have tried the following:
No crop, scale, or zoom Results are; the complete image with black bars on both sides as expected, in the clip preview, sequence preview, and exported video.
Scale preset 4:3 to 16:9 (H ratio 1.34 V ratio 1.34) The clip preview and sequence preview shows the image filling the screens. The exported video has exactly the same black bars as "no crop, scale, or zoom" video. The difference is the image. The image is missing a portion of both sides (black bars). If the sides were not missing, the image would fill the screen completely.
Zoom to 16:9 restraints (X1 13, Y1 13, X2 87, Y2 87) The clip preview shows the zoomed image. Sequence preview shows the image filling the screen. The exported video has exactly the same black bars as "no crop, scale, or zoom" and "scale" videos. The export results are the same as "scale", sides missing, etc.
Crop to 16:9 restraints (X1 13, Y1 13, X2 87, Y2 87) The clip preview shows the cropped image. Sequence preview shows the image with black bars on all four sides. The exported video has the same black bars on all sides as the previews (clip and sequence).
Originally I was using v7.00 and v7.10, cropping, then exporting as mp4, and either 1080p or 720p. I was getting full screen output. After I tried outputting as avi, the export problem began. I have tried re-installing v7.00 and then updating to v7.10 hoping to reset whatever I accidentally set when trying to export as avi. Unfortunately, this did not work.