Then upload this new letterboxed video to your SmugMug account and you're all set. You basically create a new project in a popular standard video aspect ratio, then import your video into VSP, rotate the video (using the tutorial methodology), then save the resulting standard aspect letterboxed video as a new video in a format compatible with SmugMug. Here is a tutorial for an older version, but the new version should be very similar. So Im trying to compile it from source to see if I. I've followed the same steps as you and also have errors in the rotated file. Now the colors should be correct in the rotated video file. Add the Swap U and V filter, then click Close. The current version is VSP X6 and it's available for $69USD. Ubuntu 9.10 avidemux is crashing everytime I try to run the rotate filter with a partial frame range. Leo48, go to Video > Filters, then click on the Colors button on the left side of the window.
The least expensive video editor which I'm fairly certain can do this is Corel VideoStudio Pro (VSP).
If I understand you correctly you have a video which was shot using a smart phone, or similar device, in a vertical/portrait orientation, which does not correctly rotate when you post the video to SmugMug? If this is a correct understanding of the problem then I believe what you need is an advanced video editor which can rotate and letterbox the video into a standard horizontal/landscape aspect ratio.