I read a post indentical to the problem I'm encountering from several months ago, but the fix doesn't seem to be working. My situation is such: I use Handbrake to encode video files for use with my iPhone 3G - but getting them into iTunes is the issue. I encode from an .avi file to the .mp4 format and then rename the extension to m4v - clicking and dragging (as well as File > Add File) into my library does absolutely nothing. Now, I encoded a file on saturday morning and for some reason, it worked. I think I might be missing a setting somewhere. My handbrake settings are such: output to .mp4 format MPEG4-XviD format (or the FFmpeg format) single-pass video encoding resolution 480x320 output size: 300mb Originally, the file that worked was a 700mb .avi file movie that was converted to approximately 670mb for the iphone.. it was approximately 1:40:00 in length. I am trying to convert a 45minute video clip to 300mb (half that size). I believe the encode worked once on the 45 minute video, but when it was over 500mb in size. If anybody has any ideas, please let me know.